34 lines
1004 B
Plaintext
34 lines
1004 B
Plaintext
lock = require "resty.lock"
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import Tags, Tracks from require "models"
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import escape_literal from require "lapis.db"
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next_id = (id=0) ->
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next_tag = Tags\select "WHERE id > ? ORDER BY id ASC LIMIT 1", id
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unless next_tag
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next_tag = Tags\select "WHERE id > '0' ORDER BY id ASC LIMIT 1"
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if next_tag
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return next_tag[1].id
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update_tag_counts = (premature, tag_id) ->
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if premature return
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thread_lock = lock\new "worker", { timeout: 0, exptime: 2 }
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if thread_lock\lock "update_tag_counts.thread"
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time_lock = lock\new "worker", { exptime: 2 }
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if time_lock\lock "update_tag_counts.time"
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if tag_id
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if tag = Tags\find id: tag_id
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tag_pattern = escape_literal tag.name
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tag_pattern = "'% #{tag_pattern\sub 2, -2} %'"
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count = Tracks\count "tags LIKE #{tag_pattern}"
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tag\update(:count)
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tag_id = next_id(tag_id) or tag_id
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thread_lock\unlock!
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ngx.timer.at(2, update_tag_counts, tag_id)
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ngx.timer.at(0, update_tag_counts)
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