forked from vieter-v/vieter
parent
ff57d73998
commit
f7e1aba30b
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@ -5,12 +5,13 @@ import time
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import log
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import util
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import cron.daemon
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import cron.expression
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// cron starts a cron daemon & starts periodically scheduling builds.
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pub fn cron(conf Config) ? {
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// Configure logger
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log_level := log.level_from_tag(conf.log_level) or {
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util.exit_with_message(1, 'Invalid log level. The allowed values are FATAL, ERROR, WARN, INFO & DEBUG.')
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return error('Invalid log level. The allowed values are FATAL, ERROR, WARN, INFO & DEBUG.')
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}
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mut logger := log.Log{
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@ -20,5 +21,12 @@ pub fn cron(conf Config) ? {
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logger.set_full_logpath(conf.log_file)
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logger.log_to_console_too()
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d := daemon.init(conf)
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ce := expression.parse_expression(conf.global_schedule) or {
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return error('Error while parsing global cron expression: $err.msg()')
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}
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mut d := daemon.init_daemon(logger, conf.address, conf.api_key, conf.base_image, ce,
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conf.max_concurrent_builds, conf.api_update_frequency) ?
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d.run() ?
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}
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@ -3,9 +3,12 @@ module daemon
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import git
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import time
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import log
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import datatypes
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import datatypes { MinHeap }
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import cron.expression { CronExpression, parse_expression }
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struct ScheduledBuild {
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pub:
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repo_id string
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repo git.GitRepo
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timestamp time.Time
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}
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@ -16,12 +19,16 @@ fn (r1 ScheduledBuild) < (r2 ScheduledBuild) bool {
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pub struct Daemon {
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mut:
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conf Config
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address string
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api_key string
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base_image string
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global_schedule CronExpression
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api_update_frequency int
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// Repos currently loaded from API.
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repos_map map[string]git.GitRepo
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// At what point to update the list of repositories.
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api_update_timestamp time.Time
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queue datatypes.MinHeap<ScheduledBuild>
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queue MinHeap<ScheduledBuild>
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// Which builds are currently running
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builds []git.GitRepo
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// Atomic variables used to detect when a build has finished; length is the
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@ -30,25 +37,66 @@ mut:
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logger shared log.Log
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}
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// init
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pub fn init(conf Config) Daemon {
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return Daemon{
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conf: conf
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atomics: [conf.max_concurrent_builds]u64{}
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}
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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) ?Daemon {
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mut d := Daemon{
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address: address
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api_key: api_key
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base_image: base_image
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global_schedule: global_schedule
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api_update_frequency: api_update_frequency
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atomics: []u64{len: max_concurrent_builds}
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builds: []git.GitRepo{len: max_concurrent_builds}
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logger: logger
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}
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fn (mut d Daemon) run() ? {
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// Initialize the repos & queue
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d.renew_repos() ?
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d.renew_queue() ?
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return d
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}
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pub fn (mut d Daemon) run() ? {
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println(d.queue)
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}
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fn (mut d Daemon) renew_repos() ? {
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mut new_repos := git.get_repos(d.conf.address, d.conf.api_key) ?
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mut new_repos := git.get_repos(d.address, d.api_key) ?
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d.repos_map = new_repos.move()
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d.api_update_timestamp = time.now().add_seconds(60 * d.api_update_frequency)
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}
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// renew_queue replaces the old queue with a new one that reflects the newest
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// values in repos_map.
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fn (mut d Daemon) renew_queue() ? {
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mut new_queue := MinHeap<ScheduledBuild>{}
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// Move any jobs that should have already started from the old queue onto
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// the new one
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now := time.now()
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for d.queue.len() > 0 && d.queue.peek() ?.timestamp < now {
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new_queue.insert(d.queue.pop() ?)
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}
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println('hey')
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println(d.repos_map)
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// For each repository in repos_map, parse their cron expression (or use
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// the default one if not present) & add them to the queue
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for id, repo in d.repos_map {
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println('hey')
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ce := parse_expression(repo.schedule) or { d.global_schedule }
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// A repo that can't be scheduled will just be skipped for now
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timestamp := ce.next(now) or { continue }
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new_queue.insert(ScheduledBuild{
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repo_id: id
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repo: repo
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timestamp: timestamp
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})
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}
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d.queue = new_queue
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}
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@ -1,8 +1,8 @@
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module cron
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module expression
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import time
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struct CronExpression {
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pub struct CronExpression {
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minutes []int
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hours []int
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days []int
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@ -219,7 +219,7 @@ fn parse_part(s string, min int, max int) ?[]int {
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// parse_expression parses an entire cron expression string into a
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// CronExpression object, if possible.
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fn parse_expression(exp string) ?CronExpression {
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pub fn parse_expression(exp string) ?CronExpression {
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// The filter allows for multiple spaces between parts
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mut parts := exp.split(' ').filter(it != '')
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@ -1,4 +1,4 @@
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module cron
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module expression
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// parse_range_error returns the returned error message. If the result is '',
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// that means the function didn't error.
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@ -1,4 +1,4 @@
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module cron
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module expression
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import time { parse }
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@ -15,7 +15,7 @@ pub mut:
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// Which repo the builder should publish packages to
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repo string
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// Cron schedule describing how frequently to build the repo.
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schedule string
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schedule string [optional]
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}
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// patch_from_params patches a GitRepo from a map[string]string, usually
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@ -74,7 +74,7 @@ pub fn repo_from_params(params map[string]string) ?GitRepo {
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// If we're creating a new GitRepo, we want all fields to be present before
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// "patching".
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$for field in GitRepo.fields {
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if field.name !in params {
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if field.name !in params && !field.attrs.contains('optional') {
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return error('Missing parameter: ${field.name}.')
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}
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}
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@ -8,3 +8,6 @@ repos_file = "data/repos.json"
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default_arch = "x86_64"
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address = "http://localhost:8000"
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global_schedule = '0 3'
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