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wip #8 complete rewrite of worker

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Tangent 2019-07-08 15:23:10 -07:00
parent a6fa9a7149
commit b08e96fe6b
1 changed files with 24 additions and 21 deletions
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37
worker.moon
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@ -3,28 +3,31 @@ lock = require "resty.lock"
import Tags, Tracks from require "models"
import escape_literal from require "lapis.db"
add_job = (interval, name, fn, init) ->
run = (premature, arg) ->
next_id = (id=0) ->
next_tag = Tags\select "WHERE id > ? ORDER BY id ASC LIMIT 1", id
unless next_tag
next_tag = Tags\select "WHERE id > '0' ORDER BY id ASC LIMIT 1"
if next_tag
return next_tag[1].id
update_tag_counts = (premature, tag_id) ->
if premature return
thread_lock = lock\new "worker", { timeout: 0, exptime: interval }
if thread_lock\lock "t#{name}"
thread_lock = lock\new "worker", { timeout: 0, exptime: 2 }
if thread_lock\lock "update_tag_counts.thread"
time_lock = lock\new "worker", { exptime: 2 }
if time_lock\lock "update_tag_counts.time"
time_lock = lock\new "worker", { exptime: interval }
if time_lock\lock "t#{name}"
arg = fn(arg)
thread_lock\unlock!
ngx.timer.at(interval, run, arg)
ngx.timer.at(0, run, init)
update_tag_counts = (id=1) ->
if tag = Tags\find(:id)
if tag_id
if tag = Tags\find id: tag_id
tag_pattern = escape_literal tag.name
tag_pattern = "'% #{tag_pattern\sub 2, -2} %'"
count = Tracks\count "tags LIKE #{tag_pattern}"
tag\update(:count)
next_tag = Tags\select "WHERE id > ? ORDER BY id ASC LIMIT 1", id
if next_tag = next_tag[1]
return next_tag.id
add_job 60, "tags", update_tag_counts
tag_id = next_id(tag_id) or tag_id
thread_lock\unlock!
ngx.timer.at(2, update_tag_counts, tag_id)
ngx.timer.at(0, update_tag_counts)