chore(deps): update dependency rouge to v4

Reviewed-on: #341

.clang-format

@@ -0,0 +1,4 @@
+# To stay consistent with the V formatting style, we use tabs
+UseTab: Always
+IndentWidth: 4
+TabWidth: 4

.editorconfig

@@ -5,6 +5,5 @@ root = true
 end_of_line = lf
 insert_final_newline = true
 
-[*.v]
-# vfmt wants it :(
+[*.{v,c,h}]
 indent_style = tab

.gitignore

@@ -1,4 +1,4 @@
-*.c
+vieter.c
 /data/
 
 # Build artifacts

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "docs/themes/hugo-book"]
 	path = docs/themes/hugo-book
 	url = https://github.com/alex-shpak/hugo-book
+[submodule "src/libvieter"]
+	path = src/libvieter
+	url = https://git.rustybever.be/vieter-v/libvieter

.woodpecker/build.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 matrix:
   PLATFORM:
@@ -57,7 +57,7 @@ pipeline:
 
       - export OBJ_PATH="/vieter/commits/$CI_COMMIT_SHA/vieter-$(echo '${PLATFORM}' | sed 's:/:-:g')"
       - export SIG_STRING="PUT\n\n$CONTENT_TYPE\n$DATE\n$OBJ_PATH"
-      - export SIGNATURE="$(echo -en $SIG_STRING | openssl sha1 -hmac $S3_PASSWORD -binary | base64)"
+      - export SIGNATURE="$(echo -en $SIG_STRING | openssl dgst -sha1 -hmac $S3_PASSWORD -binary | base64)"
       - >
         curl 
         --silent

.woodpecker/docs.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 platform: 'linux/amd64'
 branches:

.woodpecker/gitea.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 platform: 'linux/amd64'
 branches: [ 'main' ]

.woodpecker/lint.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 # These checks already get performed on the feature branches
 branches:

.woodpecker/man.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 platform: 'linux/amd64'
 branches:
@@ -8,15 +8,21 @@ branches:
 depends_on:
   - build
 
-skip_clone: true
-
 pipeline:
-  generate:
+  install-modules:
     image: *vlang_image
     pull: true
     commands:
-      - curl -o vieter -L "https://s3.rustybever.be/vieter/commits/$CI_COMMIT_SHA/vieter-linux-amd64"
-      - chmod +x vieter
+      - export VMODULES=$PWD/.vmodules
+      - 'cd src && v install'
+
+  generate:
+    image: *vlang_image
+    commands:
+      # - curl -o vieter -L "https://s3.rustybever.be/vieter/commits/$CI_COMMIT_SHA/vieter-linux-amd64"
+      # - chmod +x vieter
+      - export VMODULES=$PWD/.vmodules
+      - make
       - ./vieter man man
       - cd man
 

.woodpecker/test.yml

@@ -1,5 +1,5 @@
 variables:
-  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2'
+  - &vlang_image 'git.rustybever.be/chewing_bever/vlang:0.3.2-alpine3.17'
 
 matrix:
   PLATFORM:

CHANGELOG.md

@@ -9,6 +9,40 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* Metrics endpoint for Prometheus integration
+* Search in list of targets using API & CLI
+* Allow filtering targets by arch value
+
+### Changed
+
+* Rewrote cron expression logic in C
+
+### Removed
+
+* Deprecated cron daemon
+
+## [0.5.0](https://git.rustybever.be/vieter-v/vieter/src/tag/0.5.0)
+
+### Added
+
+* CLI commands for removing packages, arch-repos & repositories
+
+## [0.5.0-rc.2](https://git.rustybever.be/vieter-v/vieter/src/tag/0.5.0-rc.2)
+
+### Added
+
+* API route for removing logs & accompanying CLI command
+* Daemon for periodically removing old logs
+* CLI flag to filter logs by specific exit codes
+
+### Changed
+
+* Use `--long-option` instead of `-long-option` for CLI
+
+## [0.5.0-rc.1](https://git.rustybever.be/vieter-v/vieter/src/tag/0.5.0-rc.1)
+
+### Added
+
 * Allow specifying subdirectory inside Git repository
 * Added option to deploy using agent-server architecture instead of cron daemon
 * Allow scheduling builds on the server from the CLI tool instead of building

Makefile

@@ -1,16 +1,20 @@
 # =====CONFIG=====
 SRC_DIR := src
-SOURCES != find '$(SRC_DIR)' -iname '*.v'
+SRCS != find '$(SRC_DIR)' -iname '*.v'
 
 V_PATH ?= v
-V := $(V_PATH) -showcc -gc boehm -W -d use_openssl
+V := $(V_PATH) -showcc -gc boehm -W -d use_openssl -skip-unused
 
 all: vieter
 
 
 # =====COMPILATION=====
+.PHONY: libvieter
+libvieter:
+	make -C '$(SRC_DIR)/libvieter' CFLAGS='-O3' 
+
 # Regular binary
-vieter: $(SOURCES)
+vieter: $(SOURCES) libvieter
 	$(V) -g -o vieter $(SRC_DIR)
 
 # Debug build using gcc
@@ -18,7 +22,7 @@ vieter: $(SOURCES)
 # multi-threaded and causes issues when running vieter inside gdb.
 .PHONY: debug
 debug: dvieter
-dvieter: $(SOURCES)
+dvieter: $(SOURCES) libvieter
 	$(V_PATH) -showcc -keepc -cg -o dvieter $(SRC_DIR)
 
 # Run the debug build inside gdb
@@ -29,12 +33,12 @@ gdb: dvieter
 # Optimised production build
 .PHONY: prod
 prod: pvieter
-pvieter: $(SOURCES)
+pvieter: $(SOURCES) libvieter
 	$(V) -o pvieter -prod $(SRC_DIR)
 
 # Only generate C code
 .PHONY: c
-c: $(SOURCES)
+c: $(SOURCES) libvieter
 	$(V) -o vieter.c $(SRC_DIR)
 
 
@@ -67,6 +71,7 @@ man: vieter
 
 
 # =====OTHER=====
+# Linting
 .PHONY: lint
 lint:
 	$(V) fmt -verify $(SRC_DIR)
@@ -74,18 +79,24 @@ lint:
 	$(V_PATH) missdoc -p $(SRC_DIR)
 	@ [ $$($(V_PATH) missdoc -p $(SRC_DIR) | wc -l) = 0 ]
 
-# Format the V codebase
+
+# Formatting
 .PHONY: fmt
 fmt:
 	$(V) fmt -w $(SRC_DIR)
 
-.PHONY: test
-test:
-	$(V) test $(SRC_DIR)
 
+# Testing
+.PHONY: test
+test: libvieter
+	$(V) -g test $(SRC_DIR)
+
+
+# Cleaning
 .PHONY: clean
 clean:
 	rm -rf 'data' 'vieter' 'dvieter' 'pvieter' 'vieter.c' 'pkg' 'src/vieter' *.pkg.tar.zst 'suvieter' 'afvieter' '$(SRC_DIR)/_docs' 'docs/public'
+	make -C '$(SRC_DIR)/libvieter' clean
 
 
 # =====EXPERIMENTAL=====

PKGBUILD

@@ -3,7 +3,7 @@
 
 pkgbase='vieter'
 pkgname='vieter'
-pkgver='0.4.0'
+pkgver='0.5.0'
 pkgrel=1
 pkgdesc="Lightweight Arch repository server & package build system"
 depends=('glibc' 'openssl' 'libarchive' 'sqlite')

PKGBUILD.dev

@@ -11,27 +11,37 @@ makedepends=('git' 'vlang')
 arch=('x86_64' 'aarch64')
 url='https://git.rustybever.be/vieter-v/vieter'
 license=('AGPL3')
-source=("$pkgname::git+https://git.rustybever.be/vieter-v/vieter#branch=dev")
-md5sums=('SKIP')
+source=(
+    "${pkgname}::git+https://git.rustybever.be/vieter-v/vieter#branch=dev"
+    "libvieter::git+https://git.rustybever.be/vieter-v/libvieter"
+)
+md5sums=('SKIP' 'SKIP')
 provides=('vieter')
 conflicts=('vieter')
 
 pkgver() {
-    cd "$pkgname"
+    cd "${pkgname}"
 
     git describe --long --tags | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g'
 }
 
 prepare() {
-    export VMODULES="$srcdir/.vmodules"
+    cd "${pkgname}"
 
-    cd "$pkgname/src" && v install
+    # Add the libvieter submodule
+    git submodule init
+    git config submodules.src/libvieter.url "${srcdir}/libvieter"
+    git -c protocol.file.allow=always submodule update
+
+    export VMODULES="${srcdir}/.vmodules"
+
+    cd src && v install
 }
 
 build() {
-    export VMODULES="$srcdir/.vmodules"
+    export VMODULES="${srcdir}/.vmodules"
 
-    cd "$pkgname"
+    cd "${pkgname}"
 
     make prod
 
@@ -42,9 +52,9 @@ build() {
 }
 
 package() {
-    install -dm755 "$pkgdir/usr/bin"
-    install -Dm755 "$pkgname/pvieter" "$pkgdir/usr/bin/vieter"
+    install -dm755 "${pkgdir}/usr/bin"
+    install -Dm755 "${pkgname}/pvieter" "${pkgdir}/usr/bin/vieter"
 
-    install -dm755 "$pkgdir/usr/share/man/man1"
-    install -Dm644 "$pkgname/man"/*.1 "$pkgdir/usr/share/man/man1"
+    install -dm755 "${pkgdir}/usr/share/man/man1"
+    install -Dm644 "${pkgname}/man"/*.1 "${pkgdir}/usr/share/man/man1"
 }

docs/api/source/includes/_jobs.md

@@ -0,0 +1,78 @@
+# Jobs
+
+<aside class="notice">
+
+All routes in this section require authentication.
+
+</aside>
+
+## Manually schedule a job
+
+```shell
+curl \
+  -H 'X-Api-Key: secret' \
+  https://example.com/api/v1/jobs/queue?target=10&force&arch=x86_64
+```
+
+Manually schedule a job on the server.
+
+### HTTP Request
+
+`POST /api/v1/jobs/queue`
+
+### Query Parameters
+
+Parameter | Description
+--------- | -----------
+target | Id of target to schedule build for
+arch | Architecture to build on
+force | Whether it's a forced build (true if present)
+
+## Poll for new jobs
+
+<aside class="warning">
+
+This endpoint is used by the agents and should not be used manually. It's just
+here for completeness. Requests to this endpoint modify the build queue,
+meaning manual requests can cause builds to be skipped.
+
+</aside>
+
+```shell
+curl \
+  -H 'X-Api-Key: secret' \
+  https://example.com/api/v1/jobs/poll?arch=x86_64&max=2
+```
+
+> JSON output format
+
+```json
+{
+  "message": "",
+  "data": [
+    {
+      "target_id": 1,
+      "kind": "git",
+      "url": "https://aur.archlinux.org/discord-ptb.git",
+      "branch": "master",
+      "path": "",
+      "repo": "bur",
+      "base_image": "archlinux:base-devel",
+      "force": true
+    }
+  ]
+}
+```
+
+Poll the server for new builds.
+
+### HTTP Request
+
+`GET /api/v1/jobs/poll`
+
+### Query Parameters
+
+Parameter | Description
+--------- | -----------
+arch | For which architecture to receive jobs
+max | How many jobs to receive at most

docs/api/source/includes/_logs.md

@@ -125,8 +125,8 @@ id | ID of requested log
 
 <aside class="warning">
 
-You should probably not use this endpoint, as it's used by the build system to
-publish its logs.
+This endpoint is used by the agents and should not be used manually unless you
+know what you're doing. It's just here for completeness.
 
 </aside>
 
@@ -149,3 +149,24 @@ target | id of target this build is for
 ### Request body
 
 Plaintext contents of the build log.
+
+## Remove a build log
+
+```shell
+curl \
+  -XDELETE \
+  -H 'X-Api-Key: secret' \
+  https://example.com/api/v1/logs/1
+```
+
+Remove a build log from the server.
+
+### HTTP Request
+
+`DELETE /api/v1/logs/:id`
+
+### URL Parameters
+
+Parameter | Description
+--------- | -----------
+id | id of log to remove

docs/api/source/includes/_targets.md

@@ -27,6 +27,7 @@ curl \
       "kind": "git",
       "url": "https://aur.archlinux.org/discord-ptb.git",
       "branch": "master",
+      "path" : "",
       "repo": "bur",
       "schedule": "",
       "arch": [
@@ -54,6 +55,8 @@ Parameter | Description
 limit | Maximum amount of results to return.
 offset | Offset of results.
 repo | Limit results to targets that publish to the given repo.
+query | Only return targets that have this substring in their URL, path or branch.
+arch | Only return targets that publish to this arch.
 
 ## Get specific target
 
@@ -73,8 +76,9 @@ curl \
     "kind": "git",
     "url": "https://aur.archlinux.org/discord-ptb.git",
     "branch": "master",
+    "path": "",
     "repo": "bur",
-    "schedule": "0 3",
+    "schedule": "0 2",
     "arch": [
       {
         "id": 1,
@@ -124,6 +128,7 @@ Parameter | Description
 kind | Kind of target to add; one of 'git', 'url'.
 url | URL of the Git repository.
 branch | Branch of the Git repository.
+path | Subdirectory inside Git repository to use.
 repo | Vieter repository to publish built packages to.
 schedule | Cron build schedule (syntax explained [here](https://rustybever.be/docs/vieter/usage/builds/schedule/))
 arch | Comma-separated list of architectures to build package on.
@@ -149,12 +154,20 @@ Parameter | Description
 kind | Kind of target; one of 'git', 'url'.
 url | URL of the Git repository.
 branch | Branch of the Git repository.
+path | Subdirectory inside Git repository to use.
 repo | Vieter repository to publish built packages to.
 schedule | Cron build schedule
 arch | Comma-separated list of architectures to build package on.
 
 ## Remove a target
 
+```shell
+curl \
+  -XDELETE \
+  -H 'X-Api-Key: secret' \
+  https://example.com/api/v1/targets/1
+```
+
 Remove a target from the server.
 
 ### HTTP Request

docs/api/source/index.html.md

@@ -11,6 +11,7 @@ includes:
   - repository
   - targets
   - logs
+  - jobs
 
 search: true
 

docs/content/configuration.md

@@ -32,11 +32,11 @@ configuration variable required for each command.
 
 ### `vieter server`
 
+* `port`: HTTP port to run on
+    * Default: `8000`
 * `log_level`: log verbosity level. Value should be one of `FATAL`, `ERROR`,
   `WARN`, `INFO` or `DEBUG`.
     * Default: `WARN`
-* `log_file`: log file to write logs to.
-    * Default: `vieter.log` (in the current directory)
 * `pkg_dir`:  where Vieter should store the actual package archives.
 * `data_dir`: where Vieter stores the repositories, log file & database.
 * `api_key`: the API key to use when authenticating requests.
@@ -44,9 +44,26 @@ configuration variable required for each command.
     * Packages with architecture `any` are always added to this architecture.
       This prevents the server from being confused when an `any` package is
       published as the very first package for a repository.
-    * Git repositories added without an `arch` value use this value instead.
-* `port`: HTTP port to run on
-    * Default: `8000`
+    * Targets added without an `arch` value use this value instead.
+* `global_schedule`: build schedule for any target that does not have a
+  schedule defined. For information about this syntax, see
+  [here](/usage/builds/schedule).
+    * Default: `0 3` (3AM every night)
+* `base_image`: Docker image to use when building a package. Any Pacman-based
+  distro image should work, as long as `/etc/pacman.conf` is used &
+  `base-devel` exists in the repositories. Make sure that the image supports
+  the architecture of your cron daemon.
+    * Default: `archlinux:base-devel` (only works on `x86_64`). If you require
+      `aarch64` support, consider using
+      [`menci/archlinuxarm:base-devel`](https://hub.docker.com/r/menci/archlinuxarm)
+      ([GitHub](https://github.com/Menci/docker-archlinuxarm)). This is the
+      image used for the Vieter CI builds.
+* `max_log_age`: maximum age of logs (in days). Logs older than this will get
+  cleaned by the log removal daemon. If set to zero, no logs are ever removed.
+  The age of logs is determined by the time the build was started.
+    * Default: `0`
+* `log_removal_schedule`: cron schedule defining when to clean old logs.
+    * Default: `0 0` (every day at midnight)
 
 ### `vieter cron`
 

docs/content/installation.md

@@ -23,15 +23,15 @@ guarantees about stability, so beware!
 Thanks to the single-binary design of Vieter, this image can be used both for
 the repository server, the cron daemon and the agent.
 
-Below is an example compose file to set up both the repository server & the
-cron daemon:
+Below is a minimal compose file to set up both the repository server & a build
+agent:
 
 ```yaml
 version: '3'
 
 services:
   server:
-    image: 'chewingbever/vieter:dev'
+    image: 'chewingbever/vieter:0.5.0-rc.1'
     restart: 'always'
 
     environment:
@@ -41,18 +41,19 @@ services:
       - 'data:/data'
 
   cron:
-    image: 'chewingbever/vieter:dev'
+    image: 'chewingbever/vieter:0.5.0-rc.1'
     restart: 'always'
+    # Required to connect to the Docker daemon
     user: root
-    command: 'vieter cron'
+    command: 'vieter agent'
 
     environment:
       - 'VIETER_API_KEY=secret'
       # MUST be public URL of Vieter repository
       - 'VIETER_ADDRESS=https://example.com'
-      - 'VIETER_DEFAULT_ARCH=x86_64'
+      # Architecture for which the agent builds
+      - 'VIETER_ARCH=x86_64'
       - 'VIETER_MAX_CONCURRENT_BUILDS=2'
-      - 'VIETER_GLOBAL_SCHEDULE=0 3'
     volumes:
       - '/var/run/docker.sock:/var/run/docker.sock'
 
@@ -63,14 +64,17 @@ volumes:
 If you do not require the build system, the repository server can be used
 independently as well.
 
+Of course, Vieter allows a lot more configuration than this. This compose file
+is meant as a starting point for setting up your installation.
+
 {{< hint info >}}
 **Note**  
-Builds are executed on the cron daemon's system using the host's Docker daemon.
-A cron daemon on a specific architecture will only build packages for that
-specific architecture. Therefore, if you wish to build packages for both
-`x86_64` & `aarch64`, you'll have to deploy two cron daemons, one on each
-architecture. Afterwards, any Git repositories enabled for those two
-architectures will build on both.
+Builds are executed on the agent's system using the host's Docker daemon. An
+agent for a specific `arch` will only build packages for that specific
+architecture. Therefore, if you wish to build packages for both `x86_64` &
+`aarch64`, you'll have to deploy two agents, one on each architecture.
+Afterwards, any Git repositories enabled for those two architectures will build
+on both.
 {{< /hint >}}
 
 ## Binary
@@ -99,9 +103,9 @@ latest official release or `vieter-git` for the latest development release.
 ### AUR
 
 If you prefer building the packages locally (or on your own Vieter instance),
-there's the `[vieter](https://aur.archlinux.org/packages/vieter)` &
-`[vieter-git](https://aur.archlinux.org/packages/vieter-git)` packages on the
-AUR. These packages build using the `vlang-git` compiler package, so I can't
+there's the [`vieter`](https://aur.archlinux.org/packages/vieter) &
+[`vieter-git`](https://aur.archlinux.org/packages/vieter-git) packages on the
+AUR. These packages build using the `vlang` compiler package, so I can't
 guarantee that a compiler update won't temporarily break them.
 
 ## Building from source

docs/content/other/_index.md

@@ -1,3 +0,0 @@
----
-weight: 100
----

docs/content/other/builds-in-depth.md

@@ -1,81 +0,0 @@
-# Builds In-depth
-
-For those interested, this page describes how the build system works
-internally.
-
-## Builder image
-
-Every cron daemon perodically creates a builder image that is then used as a
-base for all builds. This is done to prevent build containers having to pull
-down a bunch of updates when they update their system.
-
-The build container is created by running the following commands inside a
-container started from the image defined in `base_image`:
-
-```sh
-# Update repos & install required packages
-pacman -Syu --needed --noconfirm base-devel git
-# Add a non-root user to run makepkg
-groupadd -g 1000 builder
-useradd -mg builder builder
-# Make sure they can use sudo without a password
-echo 'builder ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
-# Create the directory for the builds & make it writeable for the
-# build user
-mkdir /build
-chown -R builder:builder /build
-```
-
-This script updates the packages to their latest versions & creates a non-root
-user to use when running `makepkg`.
-
-This script is base64-encoded & passed to the container as an environment
-variable. The container's entrypoint is set to `/bin/sh -c` & its command
-argument to `echo $BUILD_SCRIPT | base64 -d | /bin/sh -e`, with the
-`BUILD_SCRIPT` environment variable containing the base64-encoded script.
-
-Once the container exits, a new Docker image is created from it. This image is
-then used as the base for any builds.
-
-## Running builds
-
-Each build has its own Docker container, using the builder image as its base.
-The same base64-based technique as above is used, just with a different script.
-To make the build logs more clear, each command is appended by an echo command
-printing the next command to stdout.
-
-Given the Git repository URL is `https://examplerepo.com` with branch `main`,
-the URL of the Vieter server is `https://example.com` and `vieter` is the
-repository we wish to publish to, we get the following script:
-
-```sh
-echo -e '+ echo -e '\''[vieter]\\nServer = https://example.com/$repo/$arch\\nSigLevel = Optional'\'' >> /etc/pacman.conf'
-echo -e '[vieter]\nServer = https://example.com/$repo/$arch\nSigLevel = Optional' >> /etc/pacman.conf
-echo -e '+ pacman -Syu --needed --noconfirm'
-pacman -Syu --needed --noconfirm
-echo -e '+ su builder'
-su builder
-echo -e '+ git clone --single-branch --depth 1 --branch main https://examplerepo.com repo'
-git clone --single-branch --depth 1 --branch main https://examplerepo.com repo
-echo -e '+ cd repo'
-cd repo
-echo -e '+ makepkg --nobuild --syncdeps --needed --noconfirm'
-makepkg --nobuild --syncdeps --needed --noconfirm
-echo -e '+ source PKGBUILD'
-source PKGBUILD
-echo -e '+ curl -s --head --fail https://example.com/vieter/x86_64/$pkgname-$pkgver-$pkgrel && exit 0'
-curl -s --head --fail https://example.com/vieter/x86_64/$pkgname-$pkgver-$pkgrel && exit 0
-echo -e '+ [ "$(id -u)" == 0 ] && exit 0'
-[ "$(id -u)" == 0 ] && exit 0
-echo -e '+ MAKEFLAGS="-j$(nproc)" makepkg -s --noconfirm --needed && for pkg in $(ls -1 *.pkg*); do curl -XPOST -T "$pkg" -H "X-API-KEY: $API_KEY" https://example.com/vieter/publish; done'
-MAKEFLAGS="-j$(nproc)" makepkg -s --noconfirm --needed && for pkg in $(ls -1 *.pkg*); do curl -XPOST -T "$pkg" -H "X-API-KEY: $API_KEY" https://example.com/vieter/publish; done
-```
-
-This script:
-
-1. Adds the target repository as a repository in the build container
-2. Updates mirrors & packages
-3. Clones the Git repository
-4. Runs `makepkg` without building to calculate `pkgver`
-5. Checks whether the package version is already present on the server
-6. If not, run `makepkg` & publish any generated package archives to the server

docs/content/usage/builds/cleanup.md

@@ -0,0 +1,23 @@
+---
+weight: 20
+---
+
+# Cleanup
+
+Vieter stores the logs of every single package build. While this is great for
+debugging why builds fail, it also causes an active or long-running Vieter
+instance to accumulate thousands of logs.
+
+To combat this, a log removal daemon can be enabled that periodically removes
+old build logs. By starting your server with the `max_log_age` variable (see
+[Configuration](/configuration#vieter-server)), a daemon will get enabled that
+periodically removes logs older than this setting. By default, this will happen
+every day at midnight, but this behavior can be changed using the
+`log_removal_schedule` variable.
+
+{{< hint info >}}
+**Note**  
+The daemon will always run a removal of logs on startup. Therefore, it's
+possible the daemon will be *very* active when first enabling this setting.
+After the initial surge of logs to remove, it'll calm down again.
+{{< /hint >}}

docs/content/usage/builds/schedule.md

@@ -1,3 +1,7 @@
+---
+weight: 10
+---
+
 # Cron schedule syntax
 
 The Vieter cron daemon uses a subset of the cron expression syntax to schedule

src/agent/images.v

@@ -99,7 +99,7 @@ fn (mut m ImageManager) clean_old_images() {
 			// wasn't deleted. Therefore, we move the index over. If the function
 			// returns true, the array's length has decreased by one so we don't
 			// move the index.
-			dd.remove_image(m.images[image][i]) or {
+			dd.image_remove(m.images[image][i]) or {
 				// The image was removed by an external event
 				if err.code() == 404 {
 					m.images[image].delete(i)

src/agent/log.v

@@ -1,35 +1,36 @@
 module agent
 
-import log
-
-// log a message with the given level
-pub fn (mut d AgentDaemon) log(msg string, level log.Level) {
-	lock d.logger {
-		d.logger.send_output(msg, level)
-	}
-}
-
 // lfatal create a log message with the fatal level
 pub fn (mut d AgentDaemon) lfatal(msg string) {
-	d.log(msg, log.Level.fatal)
+	lock d.logger {
+		d.logger.fatal(msg)
+	}
 }
 
 // lerror create a log message with the error level
 pub fn (mut d AgentDaemon) lerror(msg string) {
-	d.log(msg, log.Level.error)
+	lock d.logger {
+		d.logger.error(msg)
+	}
 }
 
 // lwarn create a log message with the warn level
 pub fn (mut d AgentDaemon) lwarn(msg string) {
-	d.log(msg, log.Level.warn)
+	lock d.logger {
+		d.logger.warn(msg)
+	}
 }
 
 // linfo create a log message with the info level
 pub fn (mut d AgentDaemon) linfo(msg string) {
-	d.log(msg, log.Level.info)
+	lock d.logger {
+		d.logger.info(msg)
+	}
 }
 
 // ldebug create a log message with the debug level
 pub fn (mut d AgentDaemon) ldebug(msg string) {
-	d.log(msg, log.Level.debug)
+	lock d.logger {
+		d.logger.debug(msg)
+	}
 }

src/build/build.v

@@ -57,7 +57,7 @@ pub fn create_build_image(base_image string) !string {
 	image_tag := if image_parts.len > 1 { image_parts[1] } else { 'latest' }
 
 	// We pull the provided image
-	dd.pull_image(image_name, image_tag)!
+	dd.image_pull(image_name, image_tag)!
 
 	id := dd.container_create(c)!.id
 	// id := docker.create_container(c)!
@@ -79,7 +79,7 @@ pub fn create_build_image(base_image string) !string {
 	// TODO also add the base image's name into the image name to prevent
 	// conflicts.
 	tag := time.sys_mono_now().str()
-	image := dd.create_image_from_container(id, 'vieter-build', tag)!
+	image := dd.image_from_container(id, 'vieter-build', tag)!
 	dd.container_remove(id)!
 
 	return image.id

src/build/queue.v

@@ -1,7 +1,7 @@
 module build
 
 import models { BuildConfig, Target }
-import cron.expression { CronExpression, parse_expression }
+import cron
 import time
 import datatypes { MinHeap }
 import util
@@ -13,7 +13,7 @@ pub mut:
 	// Next timestamp from which point this job is allowed to be executed
 	timestamp time.Time
 	// Required for calculating next timestamp after having pop'ed a job
-	ce CronExpression
+	ce &cron.Expression = unsafe { nil }
 	// Actual build config sent to the agent
 	config BuildConfig
 	// Whether this is a one-time job
@@ -30,7 +30,7 @@ fn (r1 BuildJob) < (r2 BuildJob) bool {
 // for each architecture. Agents receive jobs from this queue.
 pub struct BuildJobQueue {
 	// Schedule to use for targets without explicitely defined cron expression
-	default_schedule CronExpression
+	default_schedule &cron.Expression
 	// Base image to use for targets without defined base image
 	default_base_image string
 mut:
@@ -44,9 +44,9 @@ mut:
 }
 
 // new_job_queue initializes a new job queue
-pub fn new_job_queue(default_schedule CronExpression, default_base_image string) BuildJobQueue {
+pub fn new_job_queue(default_schedule &cron.Expression, default_base_image string) BuildJobQueue {
 	return BuildJobQueue{
-		default_schedule: default_schedule
+		default_schedule: unsafe { default_schedule }
 		default_base_image: default_base_image
 		invalidated: map[int]time.Time{}
 	}
@@ -85,14 +85,14 @@ pub fn (mut q BuildJobQueue) insert(input InsertConfig) ! {
 
 		if !input.now {
 			ce := if input.target.schedule != '' {
-				parse_expression(input.target.schedule) or {
+				cron.parse_expression(input.target.schedule) or {
 					return error("Error while parsing cron expression '$input.target.schedule' (id $input.target.id): $err.msg()")
 				}
 			} else {
 				q.default_schedule
 			}
 
-			job.timestamp = ce.next_from_now()!
+			job.timestamp = ce.next_from_now()
 			job.ce = ce
 		} else {
 			job.timestamp = time.now()
@@ -105,8 +105,8 @@ pub fn (mut q BuildJobQueue) insert(input InsertConfig) ! {
 // reschedule the given job by calculating the next timestamp and re-adding it
 // to its respective queue. This function is called by the pop functions
 // *after* having pop'ed the job.
-fn (mut q BuildJobQueue) reschedule(job BuildJob, arch string) ! {
-	new_timestamp := job.ce.next_from_now()!
+fn (mut q BuildJobQueue) reschedule(job BuildJob, arch string) {
+	new_timestamp := job.ce.next_from_now()
 
 	new_job := BuildJob{
 		...job
@@ -168,10 +168,7 @@ pub fn (mut q BuildJobQueue) pop(arch string) ?BuildJob {
 			job = q.queues[arch].pop()?
 
 			if !job.single {
-				// TODO how do we handle this properly? Is it even possible for a
-				// cron expression to not return a next time if it's already been
-				// used before?
-				q.reschedule(job, arch) or {}
+				q.reschedule(job, arch)
 			}
 
 			return job
@@ -198,8 +195,7 @@ pub fn (mut q BuildJobQueue) pop_n(arch string, n int) []BuildJob {
 				job = q.queues[arch].pop() or { break }
 
 				if !job.single {
-					// TODO idem
-					q.reschedule(job, arch) or {}
+					q.reschedule(job, arch)
 				}
 
 				out << job

src/client/logs.v

@@ -1,28 +1,27 @@
 module client
 
 import models { BuildLog, BuildLogFilter }
-import net.http { Method }
 import web.response { Response }
 import time
 
 // get_build_logs returns all build logs.
 pub fn (c &Client) get_build_logs(filter BuildLogFilter) ![]BuildLog {
 	params := models.params_from(filter)
-	data := c.send_request<[]BuildLog>(Method.get, '/api/v1/logs', params)!
+	data := c.send_request<[]BuildLog>(.get, '/api/v1/logs', params)!
 
 	return data.data
 }
 
 // get_build_log returns a specific build log.
 pub fn (c &Client) get_build_log(id int) !BuildLog {
-	data := c.send_request<BuildLog>(Method.get, '/api/v1/logs/$id', {})!
+	data := c.send_request<BuildLog>(.get, '/api/v1/logs/$id', {})!
 
 	return data.data
 }
 
 // get_build_log_content returns the contents of the build log file.
 pub fn (c &Client) get_build_log_content(id int) !string {
-	data := c.send_request_raw_response(Method.get, '/api/v1/logs/$id/content', {}, '')!
+	data := c.send_request_raw_response(.get, '/api/v1/logs/$id/content', {}, '')!
 
 	return data
 }
@@ -37,7 +36,12 @@ pub fn (c &Client) add_build_log(target_id int, start_time time.Time, end_time t
 		'exitCode':  exit_code.str()
 	}
 
-	data := c.send_request_with_body<int>(Method.post, '/api/v1/logs', params, content)!
+	data := c.send_request_with_body<int>(.post, '/api/v1/logs', params, content)!
 
 	return data
 }
+
+// remove_build_log removes the build log with the given id from the server.
+pub fn (c &Client) remove_build_log(id int) ! {
+	c.send_request<string>(.delete, '/api/v1/logs/$id', {})!
+}

src/client/repos.v

@@ -0,0 +1,16 @@
+module client
+
+// remove_repo removes an entire repository.
+pub fn (c &Client) remove_repo(repo string) ! {
+	c.send_request<string>(.delete, '/$repo', {})!
+}
+
+// remove_arch_repo removes an entire arch-repo.
+pub fn (c &Client) remove_arch_repo(repo string, arch string) ! {
+	c.send_request<string>(.delete, '/$repo/$arch', {})!
+}
+
+// remove_package removes a single package from the given arch-repo.
+pub fn (c &Client) remove_package(repo string, arch string, pkgname string) ! {
+	c.send_request<string>(.delete, '/$repo/$arch/$pkgname', {})!
+}

src/client/targets.v

@@ -1,12 +1,11 @@
 module client
 
 import models { Target, TargetFilter }
-import net.http { Method }
 
 // get_targets returns a list of targets, given a filter object.
 pub fn (c &Client) get_targets(filter TargetFilter) ![]Target {
 	params := models.params_from(filter)
-	data := c.send_request<[]Target>(Method.get, '/api/v1/targets', params)!
+	data := c.send_request<[]Target>(.get, '/api/v1/targets', params)!
 
 	return data.data
 }
@@ -34,7 +33,7 @@ pub fn (c &Client) get_all_targets() ![]Target {
 
 // get_target returns the target for a specific id.
 pub fn (c &Client) get_target(id int) !Target {
-	data := c.send_request<Target>(Method.get, '/api/v1/targets/$id', {})!
+	data := c.send_request<Target>(.get, '/api/v1/targets/$id', {})!
 
 	return data.data
 }
@@ -51,14 +50,14 @@ pub struct NewTarget {
 // add_target adds a new target to the server.
 pub fn (c &Client) add_target(t NewTarget) !int {
 	params := models.params_from<NewTarget>(t)
-	data := c.send_request<int>(Method.post, '/api/v1/targets', params)!
+	data := c.send_request<int>(.post, '/api/v1/targets', params)!
 
 	return data.data
 }
 
 // remove_target removes the target with the given id from the server.
 pub fn (c &Client) remove_target(id int) !string {
-	data := c.send_request<string>(Method.delete, '/api/v1/targets/$id', {})!
+	data := c.send_request<string>(.delete, '/api/v1/targets/$id', {})!
 
 	return data.data
 }
@@ -66,7 +65,7 @@ pub fn (c &Client) remove_target(id int) !string {
 // patch_target sends a PATCH request to the given target with the params as
 // payload.
 pub fn (c &Client) patch_target(id int, params map[string]string) !string {
-	data := c.send_request<string>(Method.patch, '/api/v1/targets/$id', params)!
+	data := c.send_request<string>(.patch, '/api/v1/targets/$id', params)!
 
 	return data.data
 }

src/console/logs/logs.v

@@ -24,11 +24,13 @@ pub fn cmd() cli.Command {
 				flags: [
 					cli.Flag{
 						name: 'limit'
+						abbrev: 'l'
 						description: 'How many results to return.'
 						flag: cli.FlagType.int
 					},
 					cli.Flag{
 						name: 'offset'
+						abbrev: 'o'
 						description: 'Minimum index to return.'
 						flag: cli.FlagType.int
 					},
@@ -39,16 +41,18 @@ pub fn cmd() cli.Command {
 					},
 					cli.Flag{
 						name: 'today'
-						description: 'Only list logs started today.'
+						abbrev: 't'
+						description: 'Only list logs started today. This flag overwrites any other date-related flag.'
 						flag: cli.FlagType.bool
 					},
 					cli.Flag{
 						name: 'failed'
-						description: 'Only list logs with non-zero exit codes.'
+						description: 'Only list logs with non-zero exit codes. This flag overwrites the --code flag.'
 						flag: cli.FlagType.bool
 					},
 					cli.Flag{
 						name: 'day'
+						abbrev: 'd'
 						description: 'Only list logs started on this day. (format: YYYY-MM-DD)'
 						flag: cli.FlagType.string
 					},
@@ -62,6 +66,11 @@ pub fn cmd() cli.Command {
 						description: 'Only list logs started after this timestamp. (format: YYYY-MM-DD HH:mm:ss)'
 						flag: cli.FlagType.string
 					},
+					cli.Flag{
+						name: 'code'
+						description: 'Only return logs with the given exit code. Prepend with `!` to exclude instead of include. Can be specified multiple times.'
+						flag: cli.FlagType.string_array
+					},
 				]
 				execute: fn (cmd cli.Command) ! {
 					config_file := cmd.flags.get_string('config-file')!
@@ -131,6 +140,8 @@ pub fn cmd() cli.Command {
 						filter.exit_codes = [
 							'!0',
 						]
+					} else {
+						filter.exit_codes = cmd.flags.get_strings('code')!
 					}
 
 					raw := cmd.flags.get_bool('raw')!
@@ -138,6 +149,18 @@ pub fn cmd() cli.Command {
 					list(conf, filter, raw)!
 				}
 			},
+			cli.Command{
+				name: 'remove'
+				required_args: 1
+				usage: 'id'
+				description: 'Remove a build log that matches the given id.'
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
+
+					remove(conf, cmd.args[0])!
+				}
+			},
 			cli.Command{
 				name: 'info'
 				required_args: 1
@@ -204,3 +227,9 @@ fn content(conf Config, id int) ! {
 
 	println(content)
 }
+
+// remove removes a build log from the server's list.
+fn remove(conf Config, id string) ! {
+	c := client.new(conf.address, conf.api_key)
+	c.remove_build_log(id.int())!
+}

src/console/repos/repos.v

@@ -0,0 +1,52 @@
+module repos
+
+import cli
+import conf as vconf
+import client
+
+struct Config {
+	address string [required]
+	api_key string [required]
+}
+
+// cmd returns the cli module that handles modifying the repository contents.
+pub fn cmd() cli.Command {
+	return cli.Command{
+		name: 'repos'
+		description: 'Interact with the repositories & packages stored on the server.'
+		commands: [
+			cli.Command{
+				name: 'remove'
+				required_args: 1
+				usage: 'repo [arch [pkgname]]'
+				description: 'Remove a repo, arch-repo, or package from the server.'
+				flags: [
+					cli.Flag{
+						name: 'force'
+						flag: cli.FlagType.bool
+					},
+				]
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
+
+					if cmd.args.len < 3 {
+						if !cmd.flags.get_bool('force')! {
+							return error('Removing an arch-repo or repository is a very destructive command. If you really do wish to perform this operation, explicitely add the --force flag.')
+						}
+					}
+
+					client := client.new(conf.address, conf.api_key)
+
+					if cmd.args.len == 1 {
+						client.remove_repo(cmd.args[0])!
+					} else if cmd.args.len == 2 {
+						client.remove_arch_repo(cmd.args[0], cmd.args[1])!
+					} else {
+						client.remove_package(cmd.args[0], cmd.args[1], cmd.args[2])!
+					}
+				}
+			},
+		]
+	}
+}

src/console/schedule/schedule.v

@@ -1,7 +1,7 @@
 module schedule
 
 import cli
-import cron.expression { parse_expression }
+import cron
 import time
 
 // cmd returns the cli submodule for previewing a cron schedule.
@@ -19,10 +19,10 @@ pub fn cmd() cli.Command {
 			},
 		]
 		execute: fn (cmd cli.Command) ! {
-			ce := parse_expression(cmd.args.join(' '))!
+			ce := cron.parse_expression(cmd.args.join(' '))!
 			count := cmd.flags.get_int('count')!
 
-			for t in ce.next_n(time.now(), count)! {
+			for t in ce.next_n(time.now(), count) {
 				println(t)
 			}
 		}

src/console/targets/build.v

@@ -26,7 +26,7 @@ fn build(conf Config, target_id int, force bool) ! {
 		dd.close() or {}
 	}
 
-	dd.remove_image(image_id)!
+	dd.image_remove(image_id)!
 
 	println('Uploading logs to Vieter...')
 	c.add_build_log(target.id, res.start_time, res.end_time, build_arch, res.exit_code,

src/console/targets/targets.v

@@ -2,7 +2,7 @@ module targets
 
 import cli
 import conf as vconf
-import cron.expression { parse_expression }
+import cron
 import client { NewTarget }
 import console
 import models { TargetFilter }
@@ -25,11 +25,13 @@ pub fn cmd() cli.Command {
 				flags: [
 					cli.Flag{
 						name: 'limit'
+						abbrev: 'l'
 						description: 'How many results to return.'
 						flag: cli.FlagType.int
 					},
 					cli.Flag{
 						name: 'offset'
+						abbrev: 'o'
 						description: 'Minimum index to return.'
 						flag: cli.FlagType.int
 					},
@@ -38,6 +40,17 @@ pub fn cmd() cli.Command {
 						description: 'Only return targets that publish to this repo.'
 						flag: cli.FlagType.string
 					},
+					cli.Flag{
+						name: 'query'
+						abbrev: 'q'
+						description: 'Search string to filter targets by.'
+						flag: cli.FlagType.string
+					},
+					cli.Flag{
+						name: 'arch'
+						description: 'Only list targets that build for this arch.'
+						flag: cli.FlagType.string
+					},
 				]
 				execute: fn (cmd cli.Command) ! {
 					config_file := cmd.flags.get_string('config-file')!
@@ -60,6 +73,16 @@ pub fn cmd() cli.Command {
 						filter.repo = repo
 					}
 
+					query := cmd.flags.get_string('query')!
+					if query != '' {
+						filter.query = query
+					}
+
+					arch := cmd.flags.get_string('arch')!
+					if arch != '' {
+						filter.arch = arch
+					}
+
 					raw := cmd.flags.get_bool('raw')!
 
 					list(conf, filter, raw)!
@@ -272,7 +295,7 @@ fn patch(conf Config, id string, params map[string]string) ! {
 	// We check the cron expression first because it's useless to send an
 	// invalid one to the server.
 	if 'schedule' in params && params['schedule'] != '' {
-		parse_expression(params['schedule']) or {
+		cron.parse_expression(params['schedule']) or {
 			return error('Invalid cron expression: $err.msg()')
 		}
 	}

src/cron/cli.v

@@ -1,32 +0,0 @@
-module cron
-
-import cli
-import conf as vconf
-
-struct Config {
-pub:
-	log_level               string = 'WARN'
-	api_key                 string
-	address                 string
-	data_dir                string
-	base_image              string = 'archlinux:base-devel'
-	max_concurrent_builds   int    = 1
-	api_update_frequency    int    = 15
-	image_rebuild_frequency int    = 1440
-	// Replicates the behavior of the original cron system
-	global_schedule string = '0 3'
-}
-
-// cmd returns the cli module that handles the cron daemon.
-pub fn cmd() cli.Command {
-	return cli.Command{
-		name: 'cron'
-		description: 'Start the cron service that periodically runs builds.'
-		execute: fn (cmd cli.Command) ! {
-			config_file := cmd.flags.get_string('config-file')!
-			conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
-
-			cron(conf)!
-		}
-	}
-}

src/cron/cron.v

@@ -1,33 +0,0 @@
-module cron
-
-import log
-import cron.daemon
-import cron.expression
-import os
-
-const log_file_name = 'vieter.cron.log'
-
-// cron starts a cron daemon & starts periodically scheduling builds.
-pub fn cron(conf Config) ! {
-	// Configure logger
-	log_level := log.level_from_tag(conf.log_level) or {
-		return error('Invalid log level. The allowed values are FATAL, ERROR, WARN, INFO & DEBUG.')
-	}
-
-	mut logger := log.Log{
-		level: log_level
-	}
-
-	log_file := os.join_path_single(conf.data_dir, cron.log_file_name)
-	logger.set_full_logpath(log_file)
-	logger.log_to_console_too()
-
-	ce := expression.parse_expression(conf.global_schedule) or {
-		return error('Error while parsing global cron expression: $err.msg()')
-	}
-
-	mut d := daemon.init_daemon(logger, conf.address, conf.api_key, conf.base_image, ce,
-		conf.max_concurrent_builds, conf.api_update_frequency, conf.image_rebuild_frequency)!
-
-	d.run()
-}

src/cron/daemon/build.v

@@ -1,115 +0,0 @@
-module daemon
-
-import time
-import sync.stdatomic
-import build
-import os
-
-const (
-	build_empty   = 0
-	build_running = 1
-	build_done    = 2
-)
-
-// clean_finished_builds removes finished builds from the build slots & returns
-// them.
-fn (mut d Daemon) clean_finished_builds() []ScheduledBuild {
-	mut out := []ScheduledBuild{}
-
-	for i in 0 .. d.atomics.len {
-		if stdatomic.load_u64(&d.atomics[i]) == daemon.build_done {
-			stdatomic.store_u64(&d.atomics[i], daemon.build_empty)
-			out << d.builds[i]
-		}
-	}
-
-	return out
-}
-
-// update_builds starts as many builds as possible.
-fn (mut d Daemon) start_new_builds() {
-	now := time.now()
-
-	for d.queue.len() > 0 {
-		elem := d.queue.peek() or {
-			d.lerror("queue.peek() unexpectedly returned an error. This shouldn't happen.")
-
-			break
-		}
-
-		if elem.timestamp < now {
-			sb := d.queue.pop() or {
-				d.lerror("queue.pop() unexpectedly returned an error. This shouldn't happen.")
-
-				break
-			}
-
-			// If this build couldn't be scheduled, no more will be possible.
-			if !d.start_build(sb) {
-				d.queue.insert(sb)
-				break
-			}
-		} else {
-			break
-		}
-	}
-}
-
-// start_build starts a build for the given ScheduledBuild object.
-fn (mut d Daemon) start_build(sb ScheduledBuild) bool {
-	for i in 0 .. d.atomics.len {
-		if stdatomic.load_u64(&d.atomics[i]) == daemon.build_empty {
-			stdatomic.store_u64(&d.atomics[i], daemon.build_running)
-			d.builds[i] = sb
-
-			go d.run_build(i, sb)
-
-			return true
-		}
-	}
-
-	return false
-}
-
-// run_build actually starts the build process for a given target.
-fn (mut d Daemon) run_build(build_index int, sb ScheduledBuild) {
-	d.linfo('started build: $sb.target.url -> $sb.target.repo')
-
-	// 0 means success, 1 means failure
-	mut status := 0
-
-	res := build.build_target(d.client.address, d.client.api_key, d.builder_images.last(),
-		&sb.target, false) or {
-		d.ldebug('build_target error: $err.msg()')
-		status = 1
-
-		build.BuildResult{}
-	}
-
-	if status == 0 {
-		d.linfo('finished build: $sb.target.url -> $sb.target.repo; uploading logs...')
-
-		build_arch := os.uname().machine
-		d.client.add_build_log(sb.target.id, res.start_time, res.end_time, build_arch,
-			res.exit_code, res.logs) or {
-			d.lerror('Failed to upload logs for build: $sb.target.url -> $sb.target.repo')
-		}
-	} else {
-		d.linfo('an error occured during build: $sb.target.url -> $sb.target.repo')
-	}
-
-	stdatomic.store_u64(&d.atomics[build_index], daemon.build_done)
-}
-
-// current_build_count returns how many builds are currently running.
-fn (mut d Daemon) current_build_count() int {
-	mut res := 0
-
-	for i in 0 .. d.atomics.len {
-		if stdatomic.load_u64(&d.atomics[i]) == daemon.build_running {
-			res += 1
-		}
-	}
-
-	return res
-}

src/cron/daemon/daemon.v

@@ -1,274 +0,0 @@
-module daemon
-
-import time
-import log
-import datatypes { MinHeap }
-import cron.expression { CronExpression, parse_expression }
-import math
-import build
-import docker
-import os
-import client
-import models { Target }
-
-const (
-	// How many seconds to wait before retrying to update API if failed
-	api_update_retry_timeout        = 5
-	// How many seconds to wait before retrying to rebuild image if failed
-	rebuild_base_image_retry_timout = 30
-)
-
-struct ScheduledBuild {
-pub:
-	target    Target
-	timestamp time.Time
-}
-
-// Overloaded operator for comparing ScheduledBuild objects
-fn (r1 ScheduledBuild) < (r2 ScheduledBuild) bool {
-	return r1.timestamp < r2.timestamp
-}
-
-pub struct Daemon {
-mut:
-	client                  client.Client
-	base_image              string
-	builder_images          []string
-	global_schedule         CronExpression
-	api_update_frequency    int
-	image_rebuild_frequency int
-	// Targets currently loaded from API.
-	targets []Target
-	// At what point to update the list of targets.
-	api_update_timestamp  time.Time
-	image_build_timestamp time.Time
-	queue                 MinHeap<ScheduledBuild>
-	// Which builds are currently running
-	builds []ScheduledBuild
-	// Atomic variables used to detect when a build has finished; length is the
-	// same as builds
-	atomics []u64
-	logger  shared log.Log
-}
-
-// init_daemon initializes a new Daemon object. It renews the targets &
-// populates the build queue for the first time.
-pub fn init_daemon(logger log.Log, address string, api_key string, base_image string, global_schedule CronExpression, max_concurrent_builds int, api_update_frequency int, image_rebuild_frequency int) !Daemon {
-	mut d := Daemon{
-		client: client.new(address, api_key)
-		base_image: base_image
-		global_schedule: global_schedule
-		api_update_frequency: api_update_frequency
-		image_rebuild_frequency: image_rebuild_frequency
-		atomics: []u64{len: max_concurrent_builds}
-		builds: []ScheduledBuild{len: max_concurrent_builds}
-		logger: logger
-	}
-
-	// Initialize the targets & queue
-	d.renew_targets()
-	d.renew_queue()
-	if !d.rebuild_base_image() {
-		return error('The base image failed to build. The Vieter cron daemon cannot run without an initial builder image.')
-	}
-
-	return d
-}
-
-// run starts the actual daemon process. It runs builds when possible &
-// periodically refreshes the list of targets to ensure we stay in sync.
-pub fn (mut d Daemon) run() {
-	for {
-		finished_builds := d.clean_finished_builds()
-
-		// Update the API's contents if needed & renew the queue
-		if time.now() >= d.api_update_timestamp {
-			d.renew_targets()
-			d.renew_queue()
-		}
-		// The finished builds should only be rescheduled if the API contents
-		// haven't been renewed.
-		else {
-			for sb in finished_builds {
-				d.schedule_build(sb.target)
-			}
-		}
-
-		// TODO remove old builder images.
-		// This issue is less trivial than it sounds, because a build could
-		// still be running when the image has to be rebuilt. That would
-		// prevent the image from being removed. Therefore, we will need to
-		// keep track of a list or something & remove an image once we have
-		// made sure it isn't being used anymore.
-		if time.now() >= d.image_build_timestamp {
-			d.rebuild_base_image()
-			// In theory, executing this function here allows an old builder
-			// image to exist for at most image_rebuild_frequency minutes.
-			d.clean_old_base_images()
-		}
-
-		// Schedules new builds when possible
-		d.start_new_builds()
-
-		// If there are builds currently running, the daemon should refresh
-		// every second to clean up any finished builds & start new ones.
-		mut delay := time.Duration(1 * time.second)
-
-		// Sleep either until we have to refresh the targets or when the next
-		// build has to start, with a minimum of 1 second.
-		if d.current_build_count() == 0 {
-			now := time.now()
-			delay = d.api_update_timestamp - now
-
-			if d.queue.len() > 0 {
-				elem := d.queue.peek() or {
-					d.lerror("queue.peek() unexpectedly returned an error. This shouldn't happen.")
-
-					// This is just a fallback option. In theory, queue.peek()
-					// should *never* return an error or none, because we check
-					// its len beforehand.
-					time.sleep(1)
-					continue
-				}
-
-				time_until_next_job := elem.timestamp - now
-
-				delay = math.min(delay, time_until_next_job)
-			}
-		}
-
-		// We sleep for at least one second. This is to prevent the program
-		// from looping agressively when a cronjob can be scheduled, but
-		// there's no spots free for it to be started.
-		delay = math.max(delay, 1 * time.second)
-
-		d.ldebug('Sleeping for ${delay}...')
-
-		time.sleep(delay)
-	}
-}
-
-// schedule_build adds the next occurence of the given targets build to the
-// queue.
-fn (mut d Daemon) schedule_build(target Target) {
-	ce := if target.schedule != '' {
-		parse_expression(target.schedule) or {
-			// TODO This shouldn't return an error if the expression is empty.
-			d.lerror("Error while parsing cron expression '$target.schedule' (id $target.id): $err.msg()")
-
-			d.global_schedule
-		}
-	} else {
-		d.global_schedule
-	}
-
-	// A target that can't be scheduled will just be skipped for now
-	timestamp := ce.next_from_now() or {
-		d.lerror("Couldn't calculate next timestamp from '$target.schedule'; skipping")
-		return
-	}
-
-	d.queue.insert(ScheduledBuild{
-		target: target
-		timestamp: timestamp
-	})
-}
-
-// renew_targets requests the newest list of targets from the server & replaces
-// the old one.
-fn (mut d Daemon) renew_targets() {
-	d.linfo('Renewing targets...')
-
-	mut new_targets := d.client.get_all_targets() or {
-		d.lerror('Failed to renew targets. Retrying in ${daemon.api_update_retry_timeout}s...')
-		d.api_update_timestamp = time.now().add_seconds(daemon.api_update_retry_timeout)
-
-		return
-	}
-
-	// Filter out any targets that shouldn't run on this architecture
-	cur_arch := os.uname().machine
-	new_targets = new_targets.filter(it.arch.any(it.value == cur_arch))
-
-	d.targets = new_targets
-
-	d.api_update_timestamp = time.now().add_seconds(60 * d.api_update_frequency)
-}
-
-// renew_queue replaces the old queue with a new one that reflects the newest
-// values in targets.
-fn (mut d Daemon) renew_queue() {
-	d.linfo('Renewing queue...')
-	mut new_queue := MinHeap<ScheduledBuild>{}
-
-	// Move any jobs that should have already started from the old queue onto
-	// the new one
-	now := time.now()
-
-	// For some reason, using
-	// ```v
-	// for d.queue.len() > 0 && d.queue.peek() !.timestamp < now {
-	//```
-	// here causes the function to prematurely just exit, without any errors or anything, very weird
-	// https://github.com/vlang/v/issues/14042
-	for d.queue.len() > 0 {
-		elem := d.queue.pop() or {
-			d.lerror("queue.pop() returned an error. This shouldn't happen.")
-			continue
-		}
-
-		if elem.timestamp < now {
-			new_queue.insert(elem)
-		} else {
-			break
-		}
-	}
-
-	d.queue = new_queue
-
-	// For each target in targets, parse their cron expression (or use the
-	// default one if not present) & add them to the queue
-	for target in d.targets {
-		d.schedule_build(target)
-	}
-}
-
-// rebuild_base_image recreates the builder image.
-fn (mut d Daemon) rebuild_base_image() bool {
-	d.linfo('Rebuilding builder image....')
-
-	d.builder_images << build.create_build_image(d.base_image) or {
-		d.lerror('Failed to rebuild base image. Retrying in ${daemon.rebuild_base_image_retry_timout}s...')
-		d.image_build_timestamp = time.now().add_seconds(daemon.rebuild_base_image_retry_timout)
-
-		return false
-	}
-
-	d.image_build_timestamp = time.now().add_seconds(60 * d.image_rebuild_frequency)
-
-	return true
-}
-
-// clean_old_base_images tries to remove any old but still present builder
-// images.
-fn (mut d Daemon) clean_old_base_images() {
-	mut i := 0
-
-	mut dd := docker.new_conn() or {
-		d.lerror('Failed to connect to Docker socket.')
-		return
-	}
-
-	defer {
-		dd.close() or {}
-	}
-
-	for i < d.builder_images.len - 1 {
-		// For each builder image, we try to remove it by calling the Docker
-		// API. If the function returns an error or false, that means the image
-		// wasn't deleted. Therefore, we move the index over. If the function
-		// returns true, the array's length has decreased by one so we don't
-		// move the index.
-		dd.remove_image(d.builder_images[i]) or { i += 1 }
-	}
-}

src/cron/daemon/log.v

@@ -1,35 +0,0 @@
-module daemon
-
-import log
-
-// log reate a log message with the given level
-pub fn (mut d Daemon) log(msg string, level log.Level) {
-	lock d.logger {
-		d.logger.send_output(msg, level)
-	}
-}
-
-// lfatal create a log message with the fatal level
-pub fn (mut d Daemon) lfatal(msg string) {
-	d.log(msg, log.Level.fatal)
-}
-
-// lerror create a log message with the error level
-pub fn (mut d Daemon) lerror(msg string) {
-	d.log(msg, log.Level.error)
-}
-
-// lwarn create a log message with the warn level
-pub fn (mut d Daemon) lwarn(msg string) {
-	d.log(msg, log.Level.warn)
-}
-
-// linfo create a log message with the info level
-pub fn (mut d Daemon) linfo(msg string) {
-	d.log(msg, log.Level.info)
-}
-
-// ldebug create a log message with the debug level
-pub fn (mut d Daemon) ldebug(msg string) {
-	d.log(msg, log.Level.debug)
-}

src/cron/expression.c.v

@@ -0,0 +1,101 @@
+module cron
+
+#flag -I @VMODROOT/libvieter/include
+#flag -L @VMODROOT/libvieter/build
+#flag -lvieter
+#include "vieter_cron.h"
+
+[typedef]
+pub struct C.vieter_cron_expression {
+	minutes      &u8
+	hours        &u8
+	days         &u8
+	months       &u8
+	minute_count u8
+	hour_count   u8
+	day_count    u8
+	month_count  u8
+}
+
+pub type Expression = C.vieter_cron_expression
+
+// == returns whether the two expressions are equal by value.
+fn (ce1 Expression) == (ce2 Expression) bool {
+	if ce1.month_count != ce2.month_count || ce1.day_count != ce2.day_count
+		|| ce1.hour_count != ce2.hour_count || ce1.minute_count != ce2.minute_count {
+		return false
+	}
+
+	for i in 0 .. ce1.month_count {
+		unsafe {
+			if ce1.months[i] != ce2.months[i] {
+				return false
+			}
+		}
+	}
+	for i in 0 .. ce1.day_count {
+		unsafe {
+			if ce1.days[i] != ce2.days[i] {
+				return false
+			}
+		}
+	}
+	for i in 0 .. ce1.hour_count {
+		unsafe {
+			if ce1.hours[i] != ce2.hours[i] {
+				return false
+			}
+		}
+	}
+	for i in 0 .. ce1.minute_count {
+		unsafe {
+			if ce1.minutes[i] != ce2.minutes[i] {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
+[typedef]
+struct C.vieter_cron_simple_time {
+	year   int
+	month  int
+	day    int
+	hour   int
+	minute int
+}
+
+type SimpleTime = C.vieter_cron_simple_time
+
+enum ParseError as u8 {
+	ok = 0
+	invalid_expression = 1
+	invalid_number = 2
+	out_of_range = 3
+	too_many_parts = 4
+	not_enough_parts = 5
+}
+
+// str returns the string representation of a ParseError.
+fn (e ParseError) str() string {
+	return match e {
+		.ok { '' }
+		.invalid_expression { 'Invalid expression' }
+		.invalid_number { 'Invalid number' }
+		.out_of_range { 'Out of range' }
+		.too_many_parts { 'Too many parts' }
+		.not_enough_parts { 'Not enough parts' }
+	}
+}
+
+fn C.vieter_cron_expr_init() &C.vieter_cron_expression
+
+fn C.vieter_cron_expr_free(ce &C.vieter_cron_expression)
+
+fn C.vieter_cron_expr_next(out &C.vieter_cron_simple_time, ce &C.vieter_cron_expression, ref &C.vieter_cron_simple_time)
+
+fn C.vieter_cron_expr_next_from_now(out &C.vieter_cron_simple_time, ce &C.vieter_cron_expression)
+
+fn C.vieter_cron_expr_parse(out &C.vieter_cron_expression, s &char) ParseError

src/cron/expression.v

@@ -0,0 +1,73 @@
+module cron
+
+import time
+
+// free the memory associated with the Expression.
+[unsafe]
+pub fn (ce &Expression) free() {
+	C.vieter_cron_expr_free(ce)
+}
+
+// parse_expression parses a string into an Expression.
+pub fn parse_expression(exp string) !&Expression {
+	out := C.vieter_cron_expr_init()
+	res := C.vieter_cron_expr_parse(out, exp.str)
+
+	if res != .ok {
+		return error(res.str())
+	}
+
+	return out
+}
+
+// next calculates the next occurence of the cron schedule, given a reference
+// point.
+pub fn (ce &Expression) next(ref time.Time) time.Time {
+	st := SimpleTime{
+		year: ref.year
+		month: ref.month
+		day: ref.day
+		hour: ref.hour
+		minute: ref.minute
+	}
+
+	out := SimpleTime{}
+	C.vieter_cron_expr_next(&out, ce, &st)
+
+	return time.new_time(time.Time{
+		year: out.year
+		month: out.month
+		day: out.day
+		hour: out.hour
+		minute: out.minute
+	})
+}
+
+// next_from_now calculates the next occurence of the cron schedule with the
+// current time as reference.
+pub fn (ce &Expression) next_from_now() time.Time {
+	out := SimpleTime{}
+	C.vieter_cron_expr_next_from_now(&out, ce)
+
+	return time.new_time(time.Time{
+		year: out.year
+		month: out.month
+		day: out.day
+		hour: out.hour
+		minute: out.minute
+	})
+}
+
+// next_n returns the n next occurences of the expression, given a starting
+// time.
+pub fn (ce &Expression) next_n(ref time.Time, n int) []time.Time {
+	mut times := []time.Time{cap: n}
+
+	times << ce.next(ref)
+
+	for i in 1 .. n {
+		times << ce.next(times[i - 1])
+	}
+
+	return times
+}

src/cron/expression/expression.v

@@ -1,136 +0,0 @@
-module expression
-
-import time
-
-pub struct CronExpression {
-	minutes []int
-	hours   []int
-	days    []int
-	months  []int
-}
-
-// next calculates the earliest time this cron expression is valid. It will
-// always pick a moment in the future, even if ref matches completely up to the
-// minute. This function conciously does not take gap years into account.
-pub fn (ce &CronExpression) next(ref time.Time) !time.Time {
-	// If the given ref matches the next cron occurence up to the minute, it
-	// will return that value. Because we always want to return a value in the
-	// future, we artifically shift the ref 60 seconds to make sure we always
-	// match in the future. A shift of 60 seconds is enough because the cron
-	// expression does not allow for accuracy smaller than one minute.
-	sref := ref
-
-	// For all of these values, the rule is the following: if their value is
-	// the length of their respective array in the CronExpression object, that
-	// means we've looped back around. This means that the "bigger" value has
-	// to be incremented by one. For example, if the minutes have looped
-	// around, that means that the hour has to be incremented as well.
-	mut minute_index := 0
-	mut hour_index := 0
-	mut day_index := 0
-	mut month_index := 0
-
-	// This chain is the same logic multiple times, namely that if a "bigger"
-	// value loops around, then the smaller value will always reset as well.
-	// For example, if we're going to a new day, the hour & minute will always
-	// be their smallest value again.
-	for month_index < ce.months.len && sref.month > ce.months[month_index] {
-		month_index++
-	}
-
-	if month_index < ce.months.len && sref.month == ce.months[month_index] {
-		for day_index < ce.days.len && sref.day > ce.days[day_index] {
-			day_index++
-		}
-
-		if day_index < ce.days.len && ce.days[day_index] == sref.day {
-			for hour_index < ce.hours.len && sref.hour > ce.hours[hour_index] {
-				hour_index++
-			}
-
-			if hour_index < ce.hours.len && ce.hours[hour_index] == sref.hour {
-				// Minute is the only value where we explicitely make sure we
-				// can't match sref's value exactly. This is to ensure we only
-				// return values in the future.
-				for minute_index < ce.minutes.len && sref.minute >= ce.minutes[minute_index] {
-					minute_index++
-				}
-			}
-		}
-	}
-
-	// Here, we increment the "bigger" values by one if the smaller ones loop
-	// around. The order is important, as it allows a sort-of waterfall effect
-	// to occur which updates all values if required.
-	if minute_index == ce.minutes.len && hour_index < ce.hours.len {
-		hour_index += 1
-	}
-
-	if hour_index == ce.hours.len && day_index < ce.days.len {
-		day_index += 1
-	}
-
-	if day_index == ce.days.len && month_index < ce.months.len {
-		month_index += 1
-	}
-
-	mut minute := ce.minutes[minute_index % ce.minutes.len]
-	mut hour := ce.hours[hour_index % ce.hours.len]
-	mut day := ce.days[day_index % ce.days.len]
-
-	// Sometimes, we end up with a day that does not exist within the selected
-	// month, e.g. day 30 in February. When this occurs, we reset day back to
-	// the smallest value & loop over to the next month that does have this
-	// day.
-	if day > time.month_days[ce.months[month_index % ce.months.len] - 1] {
-		day = ce.days[0]
-		month_index += 1
-
-		for day > time.month_days[ce.months[month_index & ce.months.len] - 1] {
-			month_index += 1
-
-			// If for whatever reason the day value ends up being something
-			// that can't be scheduled in any month, we have to make sure we
-			// don't create an infinite loop.
-			if month_index == 2 * ce.months.len {
-				return error('No schedulable moment.')
-			}
-		}
-	}
-
-	month := ce.months[month_index % ce.months.len]
-	mut year := sref.year
-
-	// If the month loops over, we need to increment the year.
-	if month_index >= ce.months.len {
-		year++
-	}
-
-	return time.new_time(time.Time{
-		year: year
-		month: month
-		day: day
-		minute: minute
-		hour: hour
-	})
-}
-
-// next_from_now returns the result of ce.next(ref) where ref is the result of
-// time.now().
-pub fn (ce &CronExpression) next_from_now() !time.Time {
-	return ce.next(time.now())
-}
-
-// next_n returns the n next occurences of the expression, given a starting
-// time.
-pub fn (ce &CronExpression) next_n(ref time.Time, n int) ![]time.Time {
-	mut times := []time.Time{cap: n}
-
-	times << ce.next(ref)!
-
-	for i in 1 .. n {
-		times << ce.next(times[i - 1])!
-	}
-
-	return times
-}

src/cron/expression/expression_parse.v

@@ -1,146 +0,0 @@
-module expression
-
-import bitfield
-
-// parse_range parses a given string into a range of sorted integers. Its
-// result is a BitField with set bits for all numbers in the result.
-fn parse_range(s string, min int, max int) !bitfield.BitField {
-	mut start := min
-	mut end := max
-	mut interval := 1
-	mut bf := bitfield.new(max - min + 1)
-
-	exps := s.split('/')
-
-	if exps.len > 2 {
-		return error('Invalid expression.')
-	}
-
-	if exps[0] != '*' {
-		dash_parts := exps[0].split('-')
-
-		if dash_parts.len > 2 {
-			return error('Invalid expression.')
-		}
-
-		start = dash_parts[0].int()
-
-		// The builtin parsing functions return zero if the string can't be
-		// parsed into a number, so we have to explicitely check whether they
-		// actually entered zero or if it's an invalid number.
-		if start == 0 && dash_parts[0] != '0' {
-			return error('Invalid number.')
-		}
-
-		// Check whether the start value is out of range
-		if start < min || start > max {
-			return error('Out of range.')
-		}
-
-		if dash_parts.len == 2 {
-			end = dash_parts[1].int()
-
-			if end == 0 && dash_parts[1] != '0' {
-				return error('Invalid number.')
-			}
-
-			if end < start || end > max {
-				return error('Out of range.')
-			}
-		}
-	}
-
-	if exps.len > 1 {
-		interval = exps[1].int()
-
-		// interval being zero is always invalid, but we want to check why
-		// it's invalid for better error messages.
-		if interval == 0 {
-			if exps[1] != '0' {
-				return error('Invalid number.')
-			} else {
-				return error('Step size zero not allowed.')
-			}
-		}
-
-		if interval > max - min {
-			return error('Step size too large.')
-		}
-	}
-	// Here, s solely consists of a number, so that's the only value we
-	// should return.
-	else if exps[0] != '*' && !exps[0].contains('-') {
-		bf.set_bit(start - min)
-		return bf
-	}
-
-	for start <= end {
-		bf.set_bit(start - min)
-		start += interval
-	}
-
-	return bf
-}
-
-// bf_to_ints takes a BitField and converts it into the expected list of actual
-// integers.
-fn bf_to_ints(bf bitfield.BitField, min int) []int {
-	mut out := []int{}
-
-	for i in 0 .. bf.get_size() {
-		if bf.get_bit(i) == 1 {
-			out << min + i
-		}
-	}
-
-	return out
-}
-
-// parse_part parses a given part of a cron expression & returns the
-// corresponding array of ints.
-fn parse_part(s string, min int, max int) ![]int {
-	mut bf := bitfield.new(max - min + 1)
-
-	for range in s.split(',') {
-		bf2 := parse_range(range, min, max)!
-		bf = bitfield.bf_or(bf, bf2)
-	}
-
-	return bf_to_ints(bf, min)
-}
-
-// parse_expression parses an entire cron expression string into a
-// CronExpression object, if possible.
-pub fn parse_expression(exp string) !CronExpression {
-	// The filter allows for multiple spaces between parts
-	mut parts := exp.split(' ').filter(it != '')
-
-	if parts.len < 2 || parts.len > 4 {
-		return error('Expression must contain between 2 and 4 space-separated parts.')
-	}
-
-	// For ease of use, we allow the user to only specify as many parts as they
-	// need.
-	for parts.len < 4 {
-		parts << '*'
-	}
-
-	mut part_results := [][]int{}
-
-	mins := [0, 0, 1, 1]
-	maxs := [59, 23, 31, 12]
-
-	// This for loop allows us to more clearly propagate the error to the user.
-	for i, min in mins {
-		part_results << parse_part(parts[i], min, maxs[i]) or {
-			return error('An error occurred with part $i: $err.msg()')
-		}
-	}
-
-	return CronExpression{
-		minutes: part_results[0]
-		hours: part_results[1]
-		days: part_results[2]
-		months: part_results[3]
-	}
-}

src/cron/expression/expression_parse_test.v

@@ -1,89 +0,0 @@
-module expression
-
-// parse_range_error returns the returned error message. If the result is '',
-// that means the function didn't error.
-fn parse_range_error(s string, min int, max int) string {
-	parse_range(s, min, max) or { return err.msg }
-
-	return ''
-}
-
-// =====parse_range=====
-fn test_range_star_range() ! {
-	bf := parse_range('*', 0, 5)!
-
-	assert bf_to_ints(bf, 0) == [0, 1, 2, 3, 4, 5]
-}
-
-fn test_range_number() ! {
-	bf := parse_range('4', 0, 5)!
-
-	assert bf_to_ints(bf, 0) == [4]
-}
-
-fn test_range_number_too_large() ! {
-	assert parse_range_error('10', 0, 6) == 'Out of range.'
-}
-
-fn test_range_number_too_small() ! {
-	assert parse_range_error('0', 2, 6) == 'Out of range.'
-}
-
-fn test_range_number_invalid() ! {
-	assert parse_range_error('x', 0, 6) == 'Invalid number.'
-}
-
-fn test_range_step_star_1() ! {
-	bf := parse_range('*/4', 0, 20)!
-
-	assert bf_to_ints(bf, 0) == [0, 4, 8, 12, 16, 20]
-}
-
-fn test_range_step_star_2() ! {
-	bf := parse_range('*/3', 1, 8)!
-
-	assert bf_to_ints(bf, 1) == [1, 4, 7]
-}
-
-fn test_range_step_star_too_large() ! {
-	assert parse_range_error('*/21', 0, 20) == 'Step size too large.'
-}
-
-fn test_range_step_zero() ! {
-	assert parse_range_error('*/0', 0, 20) == 'Step size zero not allowed.'
-}
-
-fn test_range_step_number() ! {
-	bf := parse_range('5/4', 2, 22)!
-
-	assert bf_to_ints(bf, 2) == [5, 9, 13, 17, 21]
-}
-
-fn test_range_step_number_too_large() ! {
-	assert parse_range_error('10/4', 0, 5) == 'Out of range.'
-}
-
-fn test_range_step_number_too_small() ! {
-	assert parse_range_error('2/4', 5, 10) == 'Out of range.'
-}
-
-fn test_range_dash() ! {
-	bf := parse_range('4-8', 0, 9)!
-
-	assert bf_to_ints(bf, 0) == [4, 5, 6, 7, 8]
-}
-
-fn test_range_dash_step() ! {
-	bf := parse_range('4-8/2', 0, 9)!
-
-	assert bf_to_ints(bf, 0) == [4, 6, 8]
-}
-
-// =====parse_part=====
-fn test_part_single() ! {
-	assert parse_part('*', 0, 5)! == [0, 1, 2, 3, 4, 5]
-}
-
-fn test_part_multiple() ! {
-	assert parse_part('*/2,2/3', 1, 8)! == [1, 2, 3, 5, 7, 8]
-}

src/cron/expression_test.v

@@ -1,4 +1,4 @@
-module expression
+module cron
 
 import time { parse }
 
@@ -7,7 +7,7 @@ fn util_test_time(exp string, t1_str string, t2_str string) ! {
 	t1 := parse(t1_str)!
 	t2 := parse(t2_str)!
 
-	t3 := ce.next(t1)!
+	t3 := ce.next(t1)
 
 	assert t2.year == t3.year
 	assert t2.month == t3.month
@@ -18,17 +18,18 @@ fn util_test_time(exp string, t1_str string, t2_str string) ! {
 
 fn test_next_simple() ! {
 	// Very simple
-	util_test_time('0 3', '2002-01-01 00:00:00', '2002-01-01 03:00:00')!
+	// util_test_time('0 3', '2002-01-01 00:00:00', '2002-01-01 03:00:00')!
 
 	// Overlap to next day
-	util_test_time('0 3', '2002-01-01 03:00:00', '2002-01-02 03:00:00')!
-	util_test_time('0 3', '2002-01-01 04:00:00', '2002-01-02 03:00:00')!
+	mut exp := '0    3         '
+	util_test_time(exp, '2002-01-01 03:00:00', '2002-01-02 03:00:00')!
+	util_test_time(exp, '2002-01-01 04:00:00', '2002-01-02 03:00:00')!
 
-	util_test_time('0 3/4', '2002-01-01 04:00:00', '2002-01-01 07:00:00')!
+	util_test_time('0 3-7/4,7-19', '2002-01-01 04:00:00', '2002-01-01 07:00:00')!
 
-	// Overlap to next month
+	//// Overlap to next month
 	util_test_time('0 3', '2002-11-31 04:00:00', '2002-12-01 03:00:00')!
 
-	// Overlap to next year
+	//// Overlap to next year
 	util_test_time('0 3', '2002-12-31 04:00:00', '2003-01-01 03:00:00')!
 }

src/cron/parse_test.v

@@ -0,0 +1,42 @@
+module cron
+
+fn test_not_allowed() {
+	illegal_expressions := [
+		'4 *-7',
+		'4 *-7/4',
+		'4 7/*',
+		'0 0 30 2',
+		'0 /5',
+		'0  ',
+		'0',
+		'      0',
+		'       0      ',
+		'1 2 3 4~9',
+		'1 1-3-5',
+		'0 5/2-5',
+		'',
+		'1 1/2/3',
+		'*5 8',
+		'x 8',
+	]
+
+	mut res := false
+
+	for exp in illegal_expressions {
+		res = false
+		parse_expression(exp) or { res = true }
+		assert res, "'$exp' should produce an error"
+	}
+}
+
+fn test_auto_extend() ! {
+	ce1 := parse_expression('5 5')!
+	ce2 := parse_expression('5 5 *')!
+	ce3 := parse_expression('5 5 * *')!
+
+	assert ce1 == ce2 && ce2 == ce3
+}
+
+fn test_four() {
+	parse_expression('0 1 2 3 ') or { assert false }
+}

src/db/targets.v

@@ -1,25 +1,6 @@
 module db
 
-import models { Target, TargetArch, TargetFilter }
-
-// get_targets returns all targets in the database.
-pub fn (db &VieterDb) get_targets(filter TargetFilter) []Target {
-	// This seems to currently be blocked by a bug in the ORM, I'll have to ask
-	// around.
-	if filter.repo != '' {
-		res := sql db.conn {
-			select from Target where repo == filter.repo order by id limit filter.limit offset filter.offset
-		}
-
-		return res
-	}
-
-	res := sql db.conn {
-		select from Target order by id limit filter.limit offset filter.offset
-	}
-
-	return res
-}
+import models { Target, TargetArch }
 
 // get_target tries to return a specific target.
 pub fn (db &VieterDb) get_target(target_id int) ?Target {

src/db/targets_iter.v

@@ -0,0 +1,129 @@
+module db
+
+import models { Target, TargetFilter }
+import sqlite
+
+// Iterator providing a filtered view into the list of targets currently stored
+// in the database. It replaces functionality usually performed in the database
+// using SQL queries that can't currently be used due to missing stuff in V's
+// ORM.
+pub struct TargetsIterator {
+	conn        sqlite.DB
+	filter      TargetFilter
+	window_size int = 32
+mut:
+	window       []Target
+	window_index u64
+	// Offset in entire list of unfiltered targets
+	offset int
+	// Offset in filtered list of targets
+	filtered_offset u64
+	started         bool
+	done            bool
+}
+
+// targets returns an iterator allowing filtered access to the list of targets.
+pub fn (db &VieterDb) targets(filter TargetFilter) TargetsIterator {
+	window_size := 32
+
+	return TargetsIterator{
+		conn: db.conn
+		filter: filter
+		window: []Target{cap: window_size}
+		window_size: window_size
+	}
+}
+
+// advance_window moves the sliding window over the filtered list of targets
+// until it either reaches the end of the list of targets, or has encountered a
+// non-empty window.
+fn (mut ti TargetsIterator) advance_window() {
+	for {
+		ti.window = sql ti.conn {
+			select from Target order by id limit ti.window_size offset ti.offset
+		}
+		ti.offset += ti.window.len
+
+		if ti.window.len == 0 {
+			ti.done = true
+
+			return
+		}
+
+		if ti.filter.repo != '' {
+			ti.window = ti.window.filter(it.repo == ti.filter.repo)
+		}
+
+		if ti.filter.arch != '' {
+			ti.window = ti.window.filter(it.arch.any(it.value == ti.filter.arch))
+		}
+
+		if ti.filter.query != '' {
+			ti.window = ti.window.filter(it.url.contains(ti.filter.query)
+				|| it.path.contains(ti.filter.query) || it.branch.contains(ti.filter.query))
+		}
+
+		// We break out of the loop once we found a non-empty window
+		if ti.window.len > 0 {
+			break
+		}
+	}
+}
+
+// next returns the next target, if possible.
+pub fn (mut ti TargetsIterator) next() ?Target {
+	if ti.done {
+		return none
+	}
+
+	// The first call to `next` will cause the sliding window to move to where
+	// the requested offset starts
+	if !ti.started {
+		ti.advance_window()
+
+		// Skip all matched targets until the requested offset
+		for !ti.done && ti.filtered_offset + u64(ti.window.len) <= ti.filter.offset {
+			ti.filtered_offset += u64(ti.window.len)
+			ti.advance_window()
+		}
+
+		if ti.done {
+			return none
+		}
+
+		left_inside_window := ti.filter.offset - ti.filtered_offset
+		ti.window_index = left_inside_window
+		ti.filtered_offset += left_inside_window
+
+		ti.started = true
+	}
+
+	return_value := ti.window[ti.window_index]
+
+	ti.window_index++
+	ti.filtered_offset++
+
+	// Next call will be past the requested offset
+	if ti.filter.limit > 0 && ti.filtered_offset == ti.filter.offset + ti.filter.limit {
+		ti.done = true
+	}
+
+	// Ensure the next call has a new valid window
+	if ti.window_index == u64(ti.window.len) {
+		ti.advance_window()
+		ti.window_index = 0
+	}
+
+	return return_value
+}
+
+// collect consumes the entire iterator & returns the result as an array.
+pub fn (mut ti TargetsIterator) collect() []Target {
+	mut out := []Target{}
+
+	for t in ti {
+		out << t
+	}
+
+	return out
+}

src/libvieter

@@ -0,0 +1 @@
+Subproject commit 379a05a7b6b604c107360e0a679fb3ea5400e02c

src/main.v

@@ -8,7 +8,7 @@ import console.logs
 import console.schedule
 import console.man
 import console.aur
-import cron
+import console.repos
 import agent
 
 fn main() {
@@ -20,7 +20,8 @@ fn main() {
 	mut app := cli.Command{
 		name: 'vieter'
 		description: 'Vieter is a lightweight implementation of an Arch repository server.'
-		version: '0.4.0'
+		version: '0.5.0'
+		posix_mode: true
 		flags: [
 			cli.Flag{
 				flag: cli.FlagType.string
@@ -41,12 +42,12 @@ fn main() {
 		commands: [
 			server.cmd(),
 			targets.cmd(),
-			cron.cmd(),
 			logs.cmd(),
 			schedule.cmd(),
 			man.cmd(),
 			aur.cmd(),
 			agent.cmd(),
+			repos.cmd(),
 		]
 	}
 	app.setup()

src/models/logs.v

@@ -1,6 +1,7 @@
 module models
 
 import time
+import os
 
 pub struct BuildLog {
 pub mut:
@@ -28,6 +29,13 @@ pub fn (bl &BuildLog) str() string {
 	return str
 }
 
+// path returns the path to the log file, relative to the logs directory
+pub fn (bl &BuildLog) path() string {
+	filename := bl.start_time.custom_format('YYYY-MM-DD_HH-mm-ss')
+
+	return os.join_path(bl.target_id.str(), bl.arch, filename)
+}
+
 [params]
 pub struct BuildLogFilter {
 pub mut:

src/models/targets.v

@@ -73,4 +73,6 @@ pub mut:
 	limit  u64 = 25
 	offset u64
 	repo   string
+	query  string
+	arch   string
 }

src/server/api_jobs.v

@@ -4,7 +4,7 @@ import web
 import web.response { new_data_response, new_response }
 
 // v1_poll_job_queue allows agents to poll for new build jobs.
-['/api/v1/jobs/poll'; auth; get]
+['/api/v1/jobs/poll'; auth; get; markused]
 fn (mut app App) v1_poll_job_queue() web.Result {
 	arch := app.query['arch'] or {
 		return app.json(.bad_request, new_response('Missing arch query arg.'))
@@ -21,7 +21,7 @@ fn (mut app App) v1_poll_job_queue() web.Result {
 }
 
 // v1_queue_job allows queueing a new one-time build job for the given target.
-['/api/v1/jobs/queue'; auth; post]
+['/api/v1/jobs/queue'; auth; markused; post]
 fn (mut app App) v1_queue_job() web.Result {
 	target_id := app.query['target'] or {
 		return app.json(.bad_request, new_response('Missing target query arg.'))

src/server/api_logs.v

@@ -11,7 +11,7 @@ import models { BuildLog, BuildLogFilter }
 
 // v1_get_logs returns all build logs in the database. A 'target' query param can
 // optionally be added to limit the list of build logs to that repository.
-['/api/v1/logs'; auth; get]
+['/api/v1/logs'; auth; get; markused]
 fn (mut app App) v1_get_logs() web.Result {
 	filter := models.from_params<BuildLogFilter>(app.query) or {
 		return app.json(.bad_request, new_response('Invalid query parameters.'))
@@ -22,7 +22,7 @@ fn (mut app App) v1_get_logs() web.Result {
 }
 
 // v1_get_single_log returns the build log with the given id.
-['/api/v1/logs/:id'; auth; get]
+['/api/v1/logs/:id'; auth; get; markused]
 fn (mut app App) v1_get_single_log(id int) web.Result {
 	log := app.db.get_build_log(id) or { return app.status(.not_found) }
 
@@ -30,7 +30,7 @@ fn (mut app App) v1_get_single_log(id int) web.Result {
 }
 
 // v1_get_log_content returns the actual build log file for the given id.
-['/api/v1/logs/:id/content'; auth; get]
+['/api/v1/logs/:id/content'; auth; get; markused]
 fn (mut app App) v1_get_log_content(id int) web.Result {
 	log := app.db.get_build_log(id) or { return app.status(.not_found) }
 	file_name := log.start_time.custom_format('YYYY-MM-DD_HH-mm-ss')
@@ -50,7 +50,7 @@ fn parse_query_time(query string) !time.Time {
 }
 
 // v1_post_log adds a new log to the database.
-['/api/v1/logs'; auth; post]
+['/api/v1/logs'; auth; markused; post]
 fn (mut app App) v1_post_log() web.Result {
 	// Parse query params
 	start_time_int := app.query['startTime'].int()
@@ -86,7 +86,7 @@ fn (mut app App) v1_post_log() web.Result {
 	}
 
 	// Store log in db
-	log := BuildLog{
+	mut log := BuildLog{
 		target_id: target_id
 		start_time: start_time
 		end_time: end_time
@@ -95,25 +95,20 @@ fn (mut app App) v1_post_log() web.Result {
 	}
 
 	// id of newly created log
-	log_id := app.db.add_build_log(log)
-
-	repo_logs_dir := os.join_path(app.conf.data_dir, logs_dir_name, target_id.str(), arch)
+	log.id = app.db.add_build_log(log)
+	log_file_path := os.join_path(app.conf.data_dir, logs_dir_name, log.path())
 
 	// Create the logs directory of it doesn't exist
-	if !os.exists(repo_logs_dir) {
-		os.mkdir_all(repo_logs_dir) or {
-			app.lerror("Couldn't create dir '$repo_logs_dir'.")
+	if !os.exists(os.dir(log_file_path)) {
+		os.mkdir_all(os.dir(log_file_path)) or {
+			app.lerror('Error while creating log file: $err.msg()')
 
 			return app.status(.internal_server_error)
 		}
 	}
 
-	// Stream log contents to correct file
-	file_name := start_time.custom_format('YYYY-MM-DD_HH-mm-ss')
-	full_path := os.join_path_single(repo_logs_dir, file_name)
-
 	if length := app.req.header.get(.content_length) {
-		util.reader_to_file(mut app.reader, length.int(), full_path) or {
+		util.reader_to_file(mut app.reader, length.int(), log_file_path) or {
 			app.lerror('An error occured while receiving logs: $err.msg()')
 
 			return app.status(.internal_server_error)
@@ -122,5 +117,22 @@ fn (mut app App) v1_post_log() web.Result {
 		return app.status(.length_required)
 	}
 
-	return app.json(.ok, new_data_response(log_id))
+	return app.json(.ok, new_data_response(log.id))
+}
+
+// v1_delete_log allows removing a build log from the system.
+['/api/v1/logs/:id'; auth; delete; markused]
+fn (mut app App) v1_delete_log(id int) web.Result {
+	log := app.db.get_build_log(id) or { return app.status(.not_found) }
+	full_path := os.join_path(app.conf.data_dir, logs_dir_name, log.path())
+
+	os.rm(full_path) or {
+		app.lerror('Failed to remove log file $full_path: $err.msg()')
+
+		return app.status(.internal_server_error)
+	}
+
+	app.db.delete_build_log(id)
+
+	return app.status(.ok)
 }

src/server/api_metrics.v

@@ -0,0 +1,19 @@
+module server
+
+import metrics
+import web
+
+// v1_metrics serves a Prometheus-compatible metrics endpoint.
+['/api/v1/metrics'; get; markused]
+fn (mut app App) v1_metrics() web.Result {
+	if !app.conf.collect_metrics {
+		return app.status(.not_found)
+	}
+
+	mut exporter := metrics.new_prometheus_exporter()
+	exporter.load('vieter_', app.collector)
+
+	// TODO stream to connection instead
+	body := exporter.export_to_string() or { return app.status(.internal_server_error) }
+	return app.body(.ok, 'text/plain', body)
+}

src/server/api_targets.v

@@ -6,18 +6,18 @@ import db
 import models { Target, TargetArch, TargetFilter }
 
 // v1_get_targets returns the current list of targets.
-['/api/v1/targets'; auth; get]
+['/api/v1/targets'; auth; get; markused]
 fn (mut app App) v1_get_targets() web.Result {
 	filter := models.from_params<TargetFilter>(app.query) or {
 		return app.json(.bad_request, new_response('Invalid query parameters.'))
 	}
-	targets := app.db.get_targets(filter)
+	mut iter := app.db.targets(filter)
 
-	return app.json(.ok, new_data_response(targets))
+	return app.json(.ok, new_data_response(iter.collect()))
 }
 
 // v1_get_single_target returns the information for a single target.
-['/api/v1/targets/:id'; auth; get]
+['/api/v1/targets/:id'; auth; get; markused]
 fn (mut app App) v1_get_single_target(id int) web.Result {
 	target := app.db.get_target(id) or { return app.status(.not_found) }
 
@@ -25,7 +25,7 @@ fn (mut app App) v1_get_single_target(id int) web.Result {
 }
 
 // v1_post_target creates a new target from the provided query string.
-['/api/v1/targets'; auth; post]
+['/api/v1/targets'; auth; markused; post]
 fn (mut app App) v1_post_target() web.Result {
 	mut params := app.query.clone()
 
@@ -55,7 +55,7 @@ fn (mut app App) v1_post_target() web.Result {
 }
 
 // v1_delete_target removes a given target from the server's list.
-['/api/v1/targets/:id'; auth; delete]
+['/api/v1/targets/:id'; auth; delete; markused]
 fn (mut app App) v1_delete_target(id int) web.Result {
 	app.db.delete_target(id)
 	app.job_queue.invalidate(id)
@@ -64,7 +64,7 @@ fn (mut app App) v1_delete_target(id int) web.Result {
 }
 
 // v1_patch_target updates a target's data with the given query params.
-['/api/v1/targets/:id'; auth; patch]
+['/api/v1/targets/:id'; auth; markused; patch]
 fn (mut app App) v1_patch_target(id int) web.Result {
 	app.db.update_target(id, app.query)
 

src/server/cli.v

@@ -5,14 +5,17 @@ import conf as vconf
 
 struct Config {
 pub:
-	log_level       string = 'WARN'
-	pkg_dir         string
-	data_dir        string
-	api_key         string
-	default_arch    string
-	global_schedule string = '0 3'
-	port            int    = 8000
-	base_image      string = 'archlinux:base-devel'
+	port                 int    = 8000
+	log_level            string = 'WARN'
+	pkg_dir              string
+	data_dir             string
+	api_key              string
+	default_arch         string
+	global_schedule      string = '0 3'
+	base_image           string = 'archlinux:base-devel'
+	max_log_age          int    [empty_default]
+	log_removal_schedule string = '0 0'
+	collect_metrics      bool   [empty_default]
 }
 
 // cmd returns the cli submodule that handles starting the server

src/server/log_removal.v

@@ -0,0 +1,53 @@
+module server
+
+import time
+import models { BuildLog }
+import os
+import cron
+
+const fallback_log_removal_frequency = 24 * time.hour
+
+// log_removal_daemon removes old build logs every `log_removal_frequency`.
+fn (mut app App) log_removal_daemon(schedule &cron.Expression) {
+	for {
+		mut too_old_timestamp := time.now().add_days(-app.conf.max_log_age)
+
+		app.linfo('Cleaning logs before $too_old_timestamp')
+
+		mut logs := []BuildLog{}
+		mut counter := 0
+		mut failed := u64(0)
+
+		// Remove old logs
+		for {
+			// The offset is used to skip logs that failed to remove. Besides
+			// this, we don't need to move the offset, because all previously
+			// oldest logs will have been removed.
+			logs = app.db.get_build_logs(before: too_old_timestamp, offset: failed, limit: 50)
+
+			for log in logs {
+				log_file_path := os.join_path(app.conf.data_dir, logs_dir_name, log.path())
+
+				os.rm(log_file_path) or {
+					app.lerror('Failed to remove log file $log_file_path: $err.msg()')
+					failed += 1
+
+					continue
+				}
+				app.db.delete_build_log(log.id)
+
+				counter += 1
+			}
+
+			if logs.len < 50 {
+				break
+			}
+		}
+
+		app.linfo('Cleaned $counter logs ($failed failed)')
+
+		// Sleep until the next cycle
+		next_time := schedule.next_from_now()
+		time.sleep(next_time - time.now())
+	}
+}

src/server/repo.v

@@ -10,7 +10,7 @@ import web.response { new_data_response, new_response }
 
 // healthcheck just returns a string, but can be used to quickly check if the
 // server is still responsive.
-['/health'; get]
+['/health'; get; markused]
 pub fn (mut app App) healthcheck() web.Result {
 	return app.json(.ok, new_response('Healthy.'))
 }
@@ -18,7 +18,7 @@ pub fn (mut app App) healthcheck() web.Result {
 // get_repo_file handles all Pacman-related routes. It returns both the
 // repository's archives, but also package archives or the contents of a
 // package's desc file.
-['/:repo/:arch/:filename'; get; head]
+['/:repo/:arch/:filename'; get; head; markused]
 fn (mut app App) get_repo_file(repo string, arch string, filename string) web.Result {
 	mut full_path := ''
 
@@ -48,7 +48,7 @@ fn (mut app App) get_repo_file(repo string, arch string, filename string) web.Re
 }
 
 // put_package handles publishing a package to a repository.
-['/:repo/publish'; auth; post]
+['/:repo/publish'; auth; markused; post]
 fn (mut app App) put_package(repo string) web.Result {
 	// api is a reserved keyword for api routes & should never be allowed to be
 	// a repository.

src/server/repo_remove.v

@@ -3,7 +3,7 @@ module server
 import web
 
 // delete_package tries to remove the given package.
-['/:repo/:arch/:pkg'; auth; delete]
+['/:repo/:arch/:pkg'; auth; delete; markused]
 fn (mut app App) delete_package(repo string, arch string, pkg string) web.Result {
 	res := app.repo.remove_pkg_from_arch_repo(repo, arch, pkg, true) or {
 		app.lerror('Error while deleting package: $err.msg()')
@@ -23,7 +23,7 @@ fn (mut app App) delete_package(repo string, arch string, pkg string) web.Result
 }
 
 // delete_arch_repo tries to remove the given arch-repo.
-['/:repo/:arch'; auth; delete]
+['/:repo/:arch'; auth; delete; markused]
 fn (mut app App) delete_arch_repo(repo string, arch string) web.Result {
 	res := app.repo.remove_arch_repo(repo, arch) or {
 		app.lerror('Error while deleting arch-repo: $err.msg()')
@@ -43,7 +43,7 @@ fn (mut app App) delete_arch_repo(repo string, arch string) web.Result {
 }
 
 // delete_repo tries to remove the given repo.
-['/:repo'; auth; delete]
+['/:repo'; auth; delete; markused]
 fn (mut app App) delete_repo(repo string) web.Result {
 	res := app.repo.remove_repo(repo) or {
 		app.lerror('Error while deleting repo: $err.msg()')

src/server/server.v

@@ -7,7 +7,8 @@ import repo
 import util
 import db
 import build { BuildJobQueue }
-import cron.expression
+import cron
+import metrics
 
 const (
 	log_file_name = 'vieter.log'
@@ -30,17 +31,8 @@ pub mut:
 // init_job_queue populates a fresh job queue with all the targets currently
 // stored in the database.
 fn (mut app App) init_job_queue() ! {
-	// Initialize build queues
-	mut targets := app.db.get_targets(limit: 25)
-	mut i := u64(0)
-
-	for targets.len > 0 {
-		for target in targets {
-			app.job_queue.insert_all(target)!
-		}
-
-		i += 25
-		targets = app.db.get_targets(limit: 25, offset: i)
+	for target in app.db.targets(limit: 0) {
+		app.job_queue.insert_all(target)!
 	}
 }
 
@@ -51,10 +43,14 @@ pub fn server(conf Config) ! {
 		util.exit_with_message(1, "'any' is not allowed as the value for default_arch.")
 	}
 
-	global_ce := expression.parse_expression(conf.global_schedule) or {
+	global_ce := cron.parse_expression(conf.global_schedule) or {
 		util.exit_with_message(1, 'Invalid global cron expression: $err.msg()')
 	}
 
+	log_removal_ce := cron.parse_expression(conf.log_removal_schedule) or {
+		util.exit_with_message(1, 'Invalid log removal cron expression: $err.msg()')
+	}
+
 	// Configure logger
 	log_level := log.level_from_tag(conf.log_level) or {
 		util.exit_with_message(1, 'Invalid log level. The allowed values are FATAL, ERROR, WARN, INFO & DEBUG.')
@@ -96,17 +92,31 @@ pub fn server(conf Config) ! {
 		util.exit_with_message(1, 'Failed to initialize database: $err.msg()')
 	}
 
+	mut collector := if conf.collect_metrics {
+		&metrics.MetricsCollector(metrics.new_default_collector())
+	} else {
+		&metrics.MetricsCollector(metrics.new_null_collector())
+	}
+	
+	collector.histogram_buckets_set('http_requests_duration_seconds', [0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1, 5,
+		10] )
+
 	mut app := &App{
 		logger: logger
 		api_key: conf.api_key
 		conf: conf
 		repo: repo
 		db: db
+		collector: collector
 		job_queue: build.new_job_queue(global_ce, conf.base_image)
 	}
 	app.init_job_queue() or {
 		util.exit_with_message(1, 'Failed to inialize job queue: $err.msg()')
 	}
 
+	if conf.max_log_age > 0 {
+		go app.log_removal_daemon(log_removal_ce)
+	}
+
 	web.run(app, conf.port)
 }

src/v.mod

@@ -2,6 +2,7 @@ Module {
     dependencies: [
         'https://git.rustybever.be/vieter-v/conf',
         'https://git.rustybever.be/vieter-v/docker',
-        'https://git.rustybever.be/vieter-v/aur'
+        'https://git.rustybever.be/vieter-v/aur',
+        'https://git.rustybever.be/vieter-v/metrics'
     ]
 }

src/web/logging.v

@@ -1,35 +1,36 @@
 module web
 
-import log
-
-// log reate a log message with the given level
-pub fn (mut ctx Context) log(msg string, level log.Level) {
-	lock ctx.logger {
-		ctx.logger.send_output(msg, level)
-	}
-}
-
 // lfatal create a log message with the fatal level
 pub fn (mut ctx Context) lfatal(msg string) {
-	ctx.log(msg, log.Level.fatal)
+	lock ctx.logger {
+		ctx.logger.fatal(msg)
+	}
 }
 
 // lerror create a log message with the error level
 pub fn (mut ctx Context) lerror(msg string) {
-	ctx.log(msg, log.Level.error)
+	lock ctx.logger {
+		ctx.logger.error(msg)
+	}
 }
 
 // lwarn create a log message with the warn level
 pub fn (mut ctx Context) lwarn(msg string) {
-	ctx.log(msg, log.Level.warn)
+	lock ctx.logger {
+		ctx.logger.warn(msg)
+	}
 }
 
 // linfo create a log message with the info level
 pub fn (mut ctx Context) linfo(msg string) {
-	ctx.log(msg, log.Level.info)
+	lock ctx.logger {
+		ctx.logger.info(msg)
+	}
 }
 
 // ldebug create a log message with the debug level
 pub fn (mut ctx Context) ldebug(msg string) {
-	ctx.log(msg, log.Level.debug)
+	lock ctx.logger {
+		ctx.logger.debug(msg)
+	}
 }

src/web/parse.v

@@ -5,7 +5,7 @@ import net.http
 
 // Method attributes that should be ignored when parsing, as they're used
 // elsewhere.
-const attrs_to_ignore = ['auth']
+const attrs_to_ignore = ['auth', 'markused']
 
 // Parsing function attributes for methods and path.
 fn parse_attrs(name string, attrs []string) !([]http.Method, string) {

src/web/web.v

@@ -11,6 +11,7 @@ import net.urllib
 import time
 import json
 import log
+import metrics
 
 // The Context struct represents the Context which hold the HTTP request and response.
 // It has fields for the query, form, files.
@@ -27,6 +28,8 @@ pub mut:
 	conn &net.TcpConn = unsafe { nil }
 	// Gives access to a shared logger object
 	logger shared log.Log
+	// Used to collect metrics on the web server
+	collector &metrics.MetricsCollector
 	// time.ticks() from start of web connection handle.
 	// You can use it to determine how much time is spent on your request.
 	page_gen_start i64
@@ -145,6 +148,15 @@ pub fn (ctx &Context) is_authenticated() bool {
 	return false
 }
 
+// body sends the given body as an HTTP response.
+pub fn (mut ctx Context) body(status http.Status, content_type string, body string) Result {
+	ctx.status = status
+	ctx.content_type = content_type
+	ctx.send_response(body)
+
+	return Result{}
+}
+
 // json<T> HTTP_OK with json_s as payload with content-type `application/json`
 pub fn (mut ctx Context) json<T>(status http.Status, j T) Result {
 	ctx.status = status
@@ -319,6 +331,22 @@ fn handle_conn<T>(mut conn net.TcpConn, mut app T, routes map[string]Route) {
 			app.logger.flush()
 		}
 
+		// Record how long request took to process
+		labels := [
+			['method', app.req.method.str()]!,
+			['path', app.req.url]!,
+			// Not all methods properly set this value yet I think
+			['status', app.status.int().str()]!,
+		]
+		app.collector.counter_increment(name: 'http_requests_total', labels: labels)
+		// Prometheus prefers metrics containing base units, as defined here
+		// https://prometheus.io/docs/practices/naming/
+		app.collector.histogram_record(f64(time.ticks() - app.page_gen_start) / 1000,
+			
+			name: 'http_requests_duration_seconds'
+			labels: labels
+		)
+
 		unsafe {
 			free(app)
 		}
@@ -384,6 +412,7 @@ fn handle_conn<T>(mut conn net.TcpConn, mut app T, routes map[string]Route) {
 		static_mime_types: app.static_mime_types
 		reader: reader
 		logger: app.logger
+		collector: app.collector
 		api_key: app.api_key
 	}
 

vieter.toml

@@ -12,3 +12,6 @@ address = "http://localhost:8000"
 api_update_frequency = 2
 image_rebuild_frequency = 1
 max_concurrent_builds = 3
+# max_log_age = 64
+log_removal_schedule = '* * *'
+collect_metrics = true