Chewing_Bever
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vieter
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Merge pull request 'implementation of cron daemon' (#134) from cron into dev 

Reviewed-on: #134
cron-docs
Jef Roosens 2022-04-30 21:05:05 +02:00
parent 20112b8693 cfacf9ed0f
commit 4a47c7bbdc
34 changed files with 606 additions and 127 deletions
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7
.gitignore vendored
View File

@ -5,8 +5,8 @@ data/
vieter
dvieter
pvieter
dvieterctl
vieterctl
suvieter
afvieter
vieter.c
# Ignore testing files
@ -23,3 +23,6 @@ v/
# gdb log file
gdb.txt
# Generated docs
_docs/

2
.woodpecker/.arch.yml
View File

@ -10,6 +10,8 @@ pipeline:
build:
image: 'menci/archlinuxarm:base-devel'
commands:
# Add the vieter repository so we can use the compiler
- echo -e '[vieter]\nServer = https://arch.r8r.be/$repo/$arch\nSigLevel = Optional' >> /etc/pacman.conf
# Update packages
- pacman -Syu --noconfirm
# Create non-root user to perform build & switch to their home

7
.woodpecker/.build.yml
View File

@ -9,22 +9,21 @@ matrix:
platform: ${PLATFORM}
pipeline:
# The default build isn't needed, as alpine switches to gcc for the compiler anyways
debug:
image: 'chewingbever/vlang:latest'
pull: true
group: 'build'
commands:
- make debug
- make
when:
event: push
branch:
exclude: [main, dev]
prod:
image: 'chewingbever/vlang:latest'
pull: true
environment:
- LDFLAGS=-lz -lbz2 -llzma -lexpat -lzstd -llz4 -static
group: 'build'
commands:
- make prod
# Make sure the binary is actually statically built

29
.woodpecker/.build_experimental.yml 100644
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@ -0,0 +1,29 @@
# These builds are not important for the project, but might be valuable for
# fixing bugs in the V compiler.
platform: linux/amd64
branches:
exclude: [master, dev]
pipeline:
autofree:
image: 'chewingbever/vlang:latest'
pull: true
group: 'build'
commands:
- make autofree
- readelf -d afvieter
- du -h afvieter
when:
event: push
skip-unused:
image: 'chewingbever/vlang:latest'
pull: true
group: 'build'
commands:
- make skip-unused
- readelf -d suvieter
- du -h suvieter
when:
event: push

2
.woodpecker/.lint.yml
View File

@ -7,7 +7,5 @@ pipeline:
lint:
image: 'chewingbever/vlang:latest'
pull: true
group: lint
commands:
- make lint
- make vet

34
Makefile
View File

@ -7,6 +7,7 @@ V := $(V_PATH) -showcc -gc boehm
all: vieter
# =====COMPILATION=====
# Regular binary
vieter: $(SOURCES)
@ -23,7 +24,7 @@ dvieter: $(SOURCES)
# Run the debug build inside gdb
.PHONY: gdb
gdb: dvieter
gdb --args './dvieter -f vieter.toml server'
gdb --args ./dvieter -f vieter.toml server
# Optimised production build
.PHONY: prod
@ -33,9 +34,10 @@ pvieter: $(SOURCES)
# Only generate C code
.PHONY: c
c:
c: $(SOURCES)
$(V) -o vieter.c $(SRC_DIR)
# =====EXECUTION=====
# Run the server in the default 'data' directory
.PHONY: run
@ -46,20 +48,20 @@ run: vieter
run-prod: prod
./pvieter -f vieter.toml server
# =====OTHER=====
.PHONY: lint
lint:
$(V) fmt -verify $(SRC_DIR)
$(V) vet -W $(SRC_DIR)
$(V_PATH) missdoc -p $(SRC_DIR)
@ [ $$($(V_PATH) missdoc -p $(SRC_DIR) | wc -l) = 0 ]
# Format the V codebase
.PHONY: fmt
fmt:
$(V) fmt -w $(SRC_DIR)
.PHONY: vet
vet:
$(V) vet -W $(SRC_DIR)
.PHONY: test
test:
$(V) test $(SRC_DIR)
@ -71,5 +73,23 @@ v/v:
git clone --single-branch https://git.rustybever.be/Chewing_Bever/v v
make -C v
.PHONY: clean
clean:
rm -rf 'data' 'vieter' 'dvieter' 'pvieter' 'vieter.c' 'dvieterctl' 'vieterctl' 'pkg' 'src/vieter' *.pkg.tar.zst
rm -rf 'data' 'vieter' 'dvieter' 'pvieter' 'vieter.c' 'dvieterctl' 'vieterctl' 'pkg' 'src/vieter' *.pkg.tar.zst 'suvieter' 'afvieter' '$(SRC_DIR)/_docs'
.PHONY: api-docs
api-docs:
rm -rf '$(SRC_DIR)/_docs'
cd '$(SRC_DIR)' && v doc -all -f html -m -readme .
# =====EXPERIMENTAL=====
.PHONY: autofree
autofree: afvieter
afvieter: $(SOURCES)
$(V_PATH) -showcc -autofree -o afvieter $(SRC_DIR)
.PHONY: skip-unused
skip-unused: suvieter
suvieter: $(SOURCES)
$(V_PATH) -showcc -skip-unused -o suvieter $(SRC_DIR)

9
PKGBUILD
View File

@ -2,10 +2,10 @@
pkgbase='vieter'
pkgname='vieter'
pkgver=0.2.0.r24.g9a56bd0
pkgver=0.2.0.r25.g20112b8
pkgrel=1
depends=('glibc' 'openssl' 'libarchive' 'gc')
makedepends=('git' 'gcc')
makedepends=('git' 'gcc' 'vieter-v')
arch=('x86_64' 'aarch64' 'armv7')
url='https://git.rustybever.be/Chewing_Bever/vieter'
license=('AGPL3')
@ -20,10 +20,7 @@ pkgver() {
build() {
cd "$pkgname"
# Build the compiler
CFLAGS= make v
V_PATH=v/v make prod
make prod
}
package() {

4
README.md
View File

@ -2,7 +2,9 @@
## Documentation
I host documentation for Vieter over at https://rustybever.be/docs/vieter/.
I host documentation for Vieter over at https://rustybever.be/docs/vieter/. API
documentation for the current codebase can be found at
https://rustybever.be/api-docs/vieter/.
## Overview

103
src/build/build.v
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@ -10,7 +10,12 @@ const container_build_dir = '/build'
const build_image_repo = 'vieter-build'
fn create_build_image(base_image string) ?string {
// create_build_image creates a builder image given some base image which can
// then be used to build & package Arch images. It mostly just updates the
// system, install some necessary packages & creates a non-root user to run
// makepkg with. The base image should be some Linux distribution that uses
// Pacman as its package manager.
pub fn create_build_image(base_image string) ?string {
commands := [
// Update repos & install required packages
'pacman -Syu --needed --noconfirm base-devel git'
@ -53,12 +58,13 @@ fn create_build_image(base_image string) ?string {
break
}
// Wait for 5 seconds
time.sleep(5000000000)
time.sleep(1 * time.second)
}
// Finally, we create the image from the container
// As the tag, we use the epoch value
// TODO also add the base image's name into the image name to prevent
// conflicts.
tag := time.sys_mono_now().str()
image := docker.create_image_from_container(id, 'vieter-build', tag) ?
docker.remove_container(id) ?
@ -66,6 +72,55 @@ fn create_build_image(base_image string) ?string {
return image.id
}
// build_repo builds, packages & publishes a given Arch package based on the
// provided GitRepo. The base image ID should be of an image previously created
// by create_build_image.
pub fn build_repo(address string, api_key string, base_image_id string, repo &git.GitRepo) ? {
build_arch := os.uname().machine
// TODO what to do with PKGBUILDs that build multiple packages?
commands := [
'git clone --single-branch --depth 1 --branch $repo.branch $repo.url repo',
'cd repo',
'makepkg --nobuild --nodeps',
'source PKGBUILD',
// The build container checks whether the package is already
// present on the server
'curl --head --fail $address/$repo.repo/$build_arch/\$pkgname-\$pkgver-\$pkgrel && exit 0',
'MAKEFLAGS="-j\$(nproc)" makepkg -s --noconfirm --needed && for pkg in \$(ls -1 *.pkg*); do curl -XPOST -T "\$pkg" -H "X-API-KEY: \$API_KEY" $address/$repo.repo/publish; done',
]
// We convert the list of commands into a base64 string, which then gets
// passed to the container as an env var
cmds_str := base64.encode_str(commands.join('\n'))
c := docker.NewContainer{
image: '$base_image_id'
env: ['BUILD_SCRIPT=$cmds_str', 'API_KEY=$api_key']
entrypoint: ['/bin/sh', '-c']
cmd: ['echo \$BUILD_SCRIPT | base64 -d | /bin/bash -e']
work_dir: '/build'
user: 'builder:builder'
}
id := docker.create_container(c) ?
docker.start_container(id) ?
// This loop waits until the container has stopped, so we can remove it after
for {
data := docker.inspect_container(id) ?
if !data.state.running {
break
}
time.sleep(1 * time.second)
}
docker.remove_container(id) ?
}
// build builds every Git repo in the server's list.
fn build(conf Config) ? {
build_arch := os.uname().machine
@ -85,47 +140,7 @@ fn build(conf Config) ? {
image_id := create_build_image(conf.base_image) ?
for repo in filtered_repos {
// TODO what to do with PKGBUILDs that build multiple packages?
commands := [
'git clone --single-branch --depth 1 --branch $repo.branch $repo.url repo',
'cd repo',
'makepkg --nobuild --nodeps',
'source PKGBUILD',
// The build container checks whether the package is already
// present on the server
'curl --head --fail $conf.address/$repo.repo/$build_arch/\$pkgname-\$pkgver-\$pkgrel && exit 0',
'MAKEFLAGS="-j\$(nproc)" makepkg -s --noconfirm --needed && for pkg in \$(ls -1 *.pkg*); do curl -XPOST -T "\$pkg" -H "X-API-KEY: \$API_KEY" $conf.address/$repo.repo/publish; done',
]
// We convert the list of commands into a base64 string, which then gets
// passed to the container as an env var
cmds_str := base64.encode_str(commands.join('\n'))
c := docker.NewContainer{
image: '$image_id'
env: ['BUILD_SCRIPT=$cmds_str', 'API_KEY=$conf.api_key']
entrypoint: ['/bin/sh', '-c']
cmd: ['echo \$BUILD_SCRIPT | base64 -d | /bin/bash -e']
work_dir: '/build'
user: 'builder:builder'
}
id := docker.create_container(c) ?
docker.start_container(id) ?
// This loop waits until the container has stopped, so we can remove it after
for {
data := docker.inspect_container(id) ?
if !data.state.running {
break
}
// Wait for 5 seconds
time.sleep(5000000000)
}
docker.remove_container(id) ?
build_repo(conf.address, conf.api_key, image_id, repo) ?
}
// Finally, we remove the builder image

5
src/cron/cli.v
View File

@ -10,6 +10,11 @@ pub:
api_key string
address 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.

35
src/cron/cron.v
View File

@ -1,18 +1,29 @@
module cron
import git
import time
struct ScheduledBuild {
repo git.GitRepo
timestamp time.Time
}
fn (r1 ScheduledBuild) < (r2 ScheduledBuild) bool {
return r1.timestamp < r2.timestamp
}
import log
import cron.daemon
import cron.expression
// cron starts a cron daemon & starts periodically scheduling builds.
pub fn cron(conf Config) ? {
println('WIP')
// 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
}
logger.set_full_logpath(conf.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() ?
}

83
src/cron/daemon/build.v 100644
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@ -0,0 +1,83 @@
module daemon
import time
import sync.stdatomic
import build
const build_empty = 0
const build_running = 1
const 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 {
if d.queue.peek() ?.timestamp < now {
sb := d.queue.pop() ?
// 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 repo.
fn (mut d Daemon) run_build(build_index int, sb ScheduledBuild) ? {
d.linfo('started build: $sb.repo.url $sb.repo.branch')
build.build_repo(d.address, d.api_key, d.builder_images.last(), &sb.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
}

223
src/cron/daemon/daemon.v 100644
View File

@ -0,0 +1,223 @@
module daemon
import git
import time
import log
import datatypes { MinHeap }
import cron.expression { CronExpression, parse_expression }
import math
import build
import docker
struct ScheduledBuild {
pub:
repo_id string
repo git.GitRepo
timestamp time.Time
}
// Overloaded operator for comparing ScheduledBuild objects
fn (r1 ScheduledBuild) < (r2 ScheduledBuild) bool {
return r1.timestamp < r2.timestamp
}
pub struct Daemon {
mut:
address string
api_key string
base_image string
builder_images []string
global_schedule CronExpression
api_update_frequency int
image_rebuild_frequency int
// Repos currently loaded from API.
repos_map map[string]git.GitRepo
// At what point to update the list of repositories.
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 repositories &
// 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{
address: address
api_key: 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 repos & queue
d.renew_repos() ?
d.renew_queue() ?
d.rebuild_base_image() ?
return d
}
// run starts the actual daemon process. It runs builds when possible &
// periodically refreshes the list of repositories 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_repos() ?
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.repo_id, sb.repo) ?
}
}
// 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 repos 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 {
time_until_next_job := d.queue.peek() ?.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 ${delay}...')
time.sleep(delay)
}
}
// schedule_build adds the next occurence of the given repo build to the queue.
fn (mut d Daemon) schedule_build(repo_id string, repo git.GitRepo) ? {
ce := if repo.schedule != '' {
parse_expression(repo.schedule) or {
// TODO This shouldn't return an error if the expression is empty.
d.lerror("Error while parsing cron expression '$repo.schedule' ($repo_id): $err.msg()")
d.global_schedule
}
} else {
d.global_schedule
}
// A repo that can't be scheduled will just be skipped for now
timestamp := ce.next_from_now() ?
d.queue.insert(ScheduledBuild{
repo_id: repo_id
repo: repo
timestamp: timestamp
})
}
// renew_repos requests the newest list of Git repos from the server & replaces
// the old one.
fn (mut d Daemon) renew_repos() ? {
d.linfo('Renewing repos...')
mut new_repos := git.get_repos(d.address, d.api_key) ?
d.repos_map = new_repos.move()
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 repos_map.
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 {
if d.queue.peek() ?.timestamp < now {
new_queue.insert(d.queue.pop() ?)
} else {
break
}
}
d.queue = new_queue
// For each repository in repos_map, parse their cron expression (or use
// the default one if not present) & add them to the queue
for id, repo in d.repos_map {
d.schedule_build(id, repo) ?
}
}
// rebuild_base_image recreates the builder image.
fn (mut d Daemon) rebuild_base_image() ? {
d.linfo('Rebuilding builder image....')
d.builder_images << build.create_build_image(d.base_image) ?
d.image_build_timestamp = time.now().add_seconds(60 * d.image_rebuild_frequency)
}
// 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
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.
if !docker.remove_image(d.builder_images[i]) or { false } {
i += 1
}
}
}

35
src/cron/daemon/log.v 100644
View File

@ -0,0 +1,35 @@
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)
}

17
src/cron/expression.v → src/cron/expression/expression.v
View File

@ -1,8 +1,8 @@
module cron
module expression
import time
struct CronExpression {
pub struct CronExpression {
minutes []int
hours []int
days []int
@ -65,6 +65,7 @@ pub fn (ce &CronExpression) next(ref time.Time) ?time.Time {
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
}
@ -114,7 +115,9 @@ pub fn (ce &CronExpression) next(ref time.Time) ?time.Time {
})
}
fn (ce &CronExpression) next_from_now() ?time.Time {
// 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())
}
@ -195,6 +198,8 @@ fn parse_range(s string, min int, max int, mut bitv []bool) ? {
}
}
// bitv_to_ints converts a bit vector into an array containing the
// corresponding values.
fn bitv_to_ints(bitv []bool, min int) []int {
mut out := []int{}
@ -207,6 +212,8 @@ fn bitv_to_ints(bitv []bool, min int) []int {
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 bitv := []bool{len: max - min + 1, init: false}
@ -219,7 +226,7 @@ fn parse_part(s string, min int, max int) ?[]int {
// parse_expression parses an entire cron expression string into a
// CronExpression object, if possible.
fn parse_expression(exp string) ?CronExpression {
pub fn parse_expression(exp string) ?CronExpression {
// The filter allows for multiple spaces between parts
mut parts := exp.split(' ').filter(it != '')
@ -241,7 +248,7 @@ fn parse_expression(exp string) ?CronExpression {
// 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 error('An error occurred with part $i: $err.msg()')
}
}

2
src/cron/expression_parse_test.v → src/cron/expression/expression_parse_test.v
View File

@ -1,4 +1,4 @@
module cron
module expression
// parse_range_error returns the returned error message. If the result is '',
// that means the function didn't error.

2
src/cron/expression_test.v → src/cron/expression/expression_test.v
View File

@ -1,4 +1,4 @@
module cron
module expression
import time { parse }

10
src/docker/docker.v
View File

@ -9,6 +9,8 @@ const socket = '/var/run/docker.sock'
const buf_len = 1024
// send writes a request to the Docker socket, waits for a response & returns
// it.
fn send(req &string) ?http.Response {
// Open a connection to the socket
mut s := unix.connect_stream(docker.socket) or {
@ -28,8 +30,8 @@ fn send(req &string) ?http.Response {
s.wait_for_write() ?
mut c := 0
mut buf := []byte{len: docker.buf_len}
mut res := []byte{}
mut buf := []u8{len: docker.buf_len}
mut res := []u8{}
for {
c = s.read(mut buf) or { return error('Failed to read data from socket ${docker.socket}.') }
@ -52,7 +54,7 @@ fn send(req &string) ?http.Response {
// We loop until we've encountered the end of the chunked response
// A chunked HTTP response always ends with '0\r\n\r\n'.
for res.len < 5 || res#[-5..] != [byte(`0`), `\r`, `\n`, `\r`, `\n`] {
for res.len < 5 || res#[-5..] != [u8(`0`), `\r`, `\n`, `\r`, `\n`] {
// Wait for the server to respond
s.wait_for_write() ?
@ -72,12 +74,14 @@ fn send(req &string) ?http.Response {
return http.parse_response(res.bytestr())
}
// request_with_body sends a request to the Docker socket with the given body.
fn request_with_body(method string, url urllib.URL, content_type string, body string) ?http.Response {
req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Type: $content_type\nContent-Length: $body.len\n\n$body\n\n'
return send(req)
}
// request sends a request to the Docker socket with an empty body.
fn request(method string, url urllib.URL) ?http.Response {
req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'

34
src/env/env.v vendored
View File

@ -36,7 +36,7 @@ fn get_env_var(field_name string) ?string {
// Otherwise, we process the file
return os.read_file(env_file) or {
error('Failed to read file defined in $env_file_name: ${err.msg}.')
error('Failed to read file defined in $env_file_name: ${err.msg()}.')
}
}
@ -55,28 +55,42 @@ pub fn load<T>(path string) ?T {
$for field in T.fields {
s := doc.value(field.name)
// We currently only support strings
if s.type_name() == 'string' {
if s !is toml.Null {
$if field.typ is string {
res.$(field.name) = s.string()
} $else $if field.typ is int {
res.$(field.name) = s.int()
}
}
}
}
$for field in T.fields {
$if field.typ is string {
env_value := get_env_var(field.name) ?
// The value of the env var will always be chosen over the config
// file
// The value of an env var will always take precedence over the toml
// file.
if env_value != '' {
$if field.typ is string {
res.$(field.name) = env_value
} $else $if field.typ is int {
res.$(field.name) = env_value.int()
}
// If there's no value from the toml file either, we try to find a
// default value
else if res.$(field.name) == '' {
}
// Now, we check whether a value is present. If there isn't, that means
// it isn't in the config file, nor is there a default or an env var.
mut has_value := false
$if field.typ is string {
has_value = res.$(field.name) != ''
} $else $if field.typ is int {
has_value = res.$(field.name) != 0
}
if !has_value {
return error("Missing config variable '$field.name' with no provided default. Either add it to the config file or provide it using an environment variable.")
}
}
}
return res
}

6
src/git/cli.v
View File

@ -96,6 +96,8 @@ pub fn cmd() cli.Command {
}
}
// get_repo_id_by_prefix tries to find the repo with the given prefix in its
// ID. If multiple or none are found, an error is raised.
fn get_repo_id_by_prefix(conf Config, id_prefix string) ?string {
repos := get_repos(conf.address, conf.api_key) ?
@ -118,6 +120,7 @@ fn get_repo_id_by_prefix(conf Config, id_prefix string) ?string {
return res[0]
}
// list prints out a list of all repositories.
fn list(conf Config) ? {
repos := get_repos(conf.address, conf.api_key) ?
@ -126,12 +129,14 @@ fn list(conf Config) ? {
}
}
// add adds a new repository to the server's list.
fn add(conf Config, url string, branch string, repo string, arch []string) ? {
res := add_repo(conf.address, conf.api_key, url, branch, repo, arch) ?
println(res.message)
}
// remove removes a repository from the server's list.
fn remove(conf Config, id_prefix string) ? {
id := get_repo_id_by_prefix(conf, id_prefix) ?
res := remove_repo(conf.address, conf.api_key, id) ?
@ -139,6 +144,7 @@ fn remove(conf Config, id_prefix string) ? {
println(res.message)
}
// patch patches a given repository with the provided params.
fn patch(conf Config, id_prefix string, params map[string]string) ? {
id := get_repo_id_by_prefix(conf, id_prefix) ?
res := patch_repo(conf.address, conf.api_key, id, params) ?

3
src/git/client.v
View File

@ -4,6 +4,9 @@ import json
import response { Response }
import net.http
// send_request<T> is a convenience method for sending requests to the repos
// API. It mostly does string manipulation to create a query string containing
// the provided params.
fn send_request<T>(method http.Method, address string, url string, api_key string, params map[string]string) ?Response<T> {
mut full_url := '$address$url'

4
src/git/git.v
View File

@ -14,6 +14,8 @@ pub mut:
arch []string
// Which repo the builder should publish packages to
repo string
// Cron schedule describing how frequently to build the repo.
schedule string [optional]
}
// patch_from_params patches a GitRepo from a map[string]string, usually
@ -72,7 +74,7 @@ pub fn repo_from_params(params map[string]string) ?GitRepo {
// If we're creating a new GitRepo, we want all fields to be present before
// "patching".
$for field in GitRepo.fields {
if field.name !in params {
if field.name !in params && !field.attrs.contains('optional') {
return error('Missing parameter: ${field.name}.')
}
}

1
src/package/package.v
View File

@ -175,6 +175,7 @@ pub fn read_pkg_archive(pkg_path string) ?Pkg {
}
}
// format_entry returns a string properly formatted to be added to a desc file.
fn format_entry(key string, value string) string {
return '\n%$key%\n$value\n'
}

6
src/repo/repo.v
View File

@ -30,11 +30,11 @@ pub:
// new creates a new RepoGroupManager & creates the directories as needed
pub fn new(repos_dir string, pkg_dir string, default_arch string) ?RepoGroupManager {
if !os.is_dir(repos_dir) {
os.mkdir_all(repos_dir) or { return error('Failed to create repos directory: $err.msg') }
os.mkdir_all(repos_dir) or { return error('Failed to create repos directory: $err.msg()') }
}
if !os.is_dir(pkg_dir) {
os.mkdir_all(pkg_dir) or { return error('Failed to create package directory: $err.msg') }
os.mkdir_all(pkg_dir) or { return error('Failed to create package directory: $err.msg()') }
}
return RepoGroupManager{
@ -50,7 +50,7 @@ pub fn new(repos_dir string, pkg_dir string, default_arch string) ?RepoGroupMana
// the right subdirectories in r.pkg_dir if it was successfully added.
pub fn (r &RepoGroupManager) add_pkg_from_path(repo string, pkg_path string) ?RepoAddResult {
pkg := package.read_pkg_archive(pkg_path) or {
return error('Failed to read package file: $err.msg')
return error('Failed to read package file: $err.msg()')
}
added := r.add_pkg_in_repo(repo, pkg) ?

6
src/repo/sync.v
View File

@ -2,6 +2,8 @@ module repo
import os
// archive_add_entry writes a file to an archive, given its path & inner path
// inside the archive.
fn archive_add_entry(archive &C.archive, entry &C.archive_entry, file_path &string, inner_path &string) {
st := C.stat{}
@ -19,7 +21,7 @@ fn archive_add_entry(archive &C.archive, entry &C.archive_entry, file_path &stri
}
// Write the file to the archive
buf := [8192]byte{}
buf := [8192]u8{}
mut len := C.read(fd, &buf, sizeof(buf))
for len > 0 {
@ -29,7 +31,7 @@ fn archive_add_entry(archive &C.archive, entry &C.archive_entry, file_path &stri
}
}
// Re-generate the repo archive files
// sync regenerates the repository archive files.
fn (r &RepoGroupManager) sync(repo string, arch string) ? {
subrepo_path := os.join_path(r.repos_dir, repo, arch)

1
src/server/auth.v
View File

@ -2,6 +2,7 @@ module server
import net.http
// is_authorized checks whether the provided API key is correct.
fn (mut app App) is_authorized() bool {
x_header := app.req.header.get_custom('X-Api-Key', http.HeaderQueryConfig{ exact: true }) or {
return false

9
src/server/git.v
View File

@ -8,6 +8,7 @@ import response { new_data_response, new_response }
const repos_file = 'repos.json'
// get_repos returns the current list of repos.
['/api/repos'; get]
fn (mut app App) get_repos() web.Result {
if !app.is_authorized() {
@ -16,7 +17,7 @@ fn (mut app App) get_repos() web.Result {
repos := rlock app.git_mutex {
git.read_repos(app.conf.repos_file) or {
app.lerror('Failed to read repos file: $err.msg')
app.lerror('Failed to read repos file: $err.msg()')
return app.status(http.Status.internal_server_error)
}
@ -25,6 +26,7 @@ fn (mut app App) get_repos() web.Result {
return app.json(http.Status.ok, new_data_response(repos))
}
// get_single_repo returns the information for a single repo.
['/api/repos/:id'; get]
fn (mut app App) get_single_repo(id string) web.Result {
if !app.is_authorized() {
@ -48,6 +50,7 @@ fn (mut app App) get_single_repo(id string) web.Result {
return app.json(http.Status.ok, new_data_response(repo))
}
// post_repo creates a new repo from the provided query string.
['/api/repos'; post]
fn (mut app App) post_repo() web.Result {
if !app.is_authorized() {
@ -55,7 +58,7 @@ fn (mut app App) post_repo() web.Result {
}
new_repo := git.repo_from_params(app.query) or {
return app.json(http.Status.bad_request, new_response(err.msg))
return app.json(http.Status.bad_request, new_response(err.msg()))
}
id := rand.uuid_v4()
@ -86,6 +89,7 @@ fn (mut app App) post_repo() web.Result {
return app.json(http.Status.ok, new_response('Repo added successfully.'))
}
// delete_repo removes a given repo from the server's list.
['/api/repos/:id'; delete]
fn (mut app App) delete_repo(id string) web.Result {
if !app.is_authorized() {
@ -113,6 +117,7 @@ fn (mut app App) delete_repo(id string) web.Result {
return app.json(http.Status.ok, new_response('Repo removed successfully.'))
}
// patch_repo updates a repo's data with the given query params.
['/api/repos/:id'; patch]
fn (mut app App) patch_repo(id string) web.Result {
if !app.is_authorized() {

10
src/server/routes.v
View File

@ -16,6 +16,9 @@ pub fn (mut app App) healthcheck() web.Result {
return app.json(http.Status.ok, new_response('Healthy.'))
}
// 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]
fn (mut app App) get_repo_file(repo string, arch string, filename string) web.Result {
mut full_path := ''
@ -54,6 +57,7 @@ fn (mut app App) get_repo_file(repo string, arch string, filename string) web.Re
return app.file(full_path)
}
// put_package handles publishing a package to a repository.
['/:repo/publish'; post]
fn (mut app App) put_package(repo string) web.Result {
if !app.is_authorized() {
@ -87,15 +91,15 @@ fn (mut app App) put_package(repo string) web.Result {
}
res := app.repo.add_pkg_from_path(repo, pkg_path) or {
app.lerror('Error while adding package: $err.msg')
app.lerror('Error while adding package: $err.msg()')
os.rm(pkg_path) or { app.lerror("Failed to remove download '$pkg_path': $err.msg") }
os.rm(pkg_path) or { app.lerror("Failed to remove download '$pkg_path': $err.msg()") }
return app.json(http.Status.internal_server_error, new_response('Failed to add package.'))
}
if !res.added {
os.rm(pkg_path) or { app.lerror("Failed to remove download '$pkg_path': $err.msg") }
os.rm(pkg_path) or { app.lerror("Failed to remove download '$pkg_path': $err.msg()") }
app.lwarn("Duplicate package '$res.pkg.full_name()' in repo '$repo'.")

2
src/server/server.v
View File

@ -45,7 +45,7 @@ pub fn server(conf Config) ? {
// This also creates the directories if needed
repo := repo.new(conf.repos_dir, conf.pkg_dir, conf.default_arch) or {
logger.error(err.msg)
logger.error(err.msg())
exit(1)
}

4
src/util/util.v
View File

@ -30,7 +30,7 @@ pub fn reader_to_file(mut reader io.BufferedReader, length int, path string) ? {
file.close()
}
mut buf := []byte{len: util.reader_buf_size}
mut buf := []u8{len: util.reader_buf_size}
mut bytes_left := length
// Repeat as long as the stream still has data
@ -60,7 +60,7 @@ pub fn hash_file(path &string) ?(string, string) {
mut sha256sum := sha256.new()
buf_size := int(1_000_000)
mut buf := []byte{len: buf_size}
mut buf := []u8{len: buf_size}
mut bytes_left := os.file_size(path)
for bytes_left > 0 {

0
src/v.mod 100644
View File

2
src/web/parse.v
View File

@ -47,6 +47,7 @@ fn parse_attrs(name string, attrs []string) ?([]http.Method, string) {
return methods, path.to_lower()
}
// Extracts query parameters from a URL.
fn parse_query_from_url(url urllib.URL) map[string]string {
mut query := map[string]string{}
for v in url.query().data {
@ -55,6 +56,7 @@ fn parse_query_from_url(url urllib.URL) map[string]string {
return query
}
// Extract form data from an HTTP request.
fn parse_form_from_request(request http.Request) ?(map[string]string, map[string][]http.FileData) {
mut form := map[string]string{}
mut files := map[string][]http.FileData{}

10
src/web/web.v
View File

@ -249,7 +249,7 @@ pub fn (mut ctx Context) file(f_path string) Result {
// ext := os.file_ext(f_path)
// data := os.read_file(f_path) or {
// eprint(err.msg)
// eprint(err.msg())
// ctx.server_error(500)
// return Result{}
// }
@ -267,7 +267,7 @@ pub fn (mut ctx Context) file(f_path string) Result {
file_size := os.file_size(f_path)
file := os.open(f_path) or {
eprintln(err.msg)
eprintln(err.msg())
ctx.server_error(500)
return Result{}
}
@ -285,7 +285,7 @@ pub fn (mut ctx Context) file(f_path string) Result {
resp.set_status(ctx.status)
send_string(mut ctx.conn, resp.bytestr()) or { return Result{} }
mut buf := []byte{len: 1_000_000}
mut buf := []u8{len: 1_000_000}
mut bytes_left := file_size
// Repeat as long as the stream still has data
@ -361,7 +361,7 @@ interface DbInterface {
// run runs the app
[manualfree]
pub fn run<T>(global_app &T, port int) {
mut l := net.listen_tcp(.ip6, ':$port') or { panic('failed to listen $err.code $err') }
mut l := net.listen_tcp(.ip6, ':$port') or { panic('failed to listen $err.code() $err') }
// Parsing methods attributes
mut routes := map[string]Route{}
@ -393,7 +393,7 @@ pub fn run<T>(global_app &T, port int) {
request_app.Context = global_app.Context // copy the context ref that contains static files map etc
mut conn := l.accept() or {
// failures should not panic
eprintln('accept() failed with error: $err.msg')
eprintln('accept() failed with error: $err.msg()')
continue
}
go handle_conn<T>(mut conn, mut request_app, routes)

6
vieter.toml
View File

@ -8,3 +8,9 @@ repos_file = "data/repos.json"
default_arch = "x86_64"
address = "http://localhost:8000"
global_schedule = '* *'
api_update_frequency = 2
image_rebuild_frequency = 1
max_concurrent_builds = 3