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Reduce tailwatcher argument #2832

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merged 12 commits into from
Feb 25, 2020
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@ganmacs ganmacs commented Feb 20, 2020

Which issue(s) this PR fixes:
no

What this PR does / why we need it:

Reduce TailWatcher's arguments. it's hard to maintain now.

Docs Changes:

no

Release Note:

no

Signed-off-by: Yuta Iwama <[email protected]>
Signed-off-by: Yuta Iwama <[email protected]>
TailWatcher is not related to this

Signed-off-by: Yuta Iwama <[email protected]>
and this log is no need to be put here

Signed-off-by: Yuta Iwama <[email protected]>
Signed-off-by: Yuta Iwama <[email protected]>
Signed-off-by: Yuta Iwama <[email protected]>
Signed-off-by: Yuta Iwama <[email protected]>
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@cosmo0920 cosmo0920 left a comment

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Looks reasonable for me.

And I added a nitpicks for logging messages in #update_watcher.
Is it copy and paste mistake?

@@ -384,6 +398,9 @@ def close_watcher_handles

# refresh_watchers calls @tails.keys so we don't use stop_watcher -> start_watcher sequence for safety.
def update_watcher(path, pe)
log_msg = "detected rotation of #{path}"
log_msg << "; waiting #{@rotate_wait} seconds" # wait rotate_time if previous file exists

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Missing log.info here?

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Good catch…thank you 🙏 9940869

def on_change(prev, cur)
@callback.call
rescue
# TODO log?
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Can remove too old comment

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fixed 269ea68

@@ -384,6 +398,10 @@ def close_watcher_handles

# refresh_watchers calls @tails.keys so we don't use stop_watcher -> start_watcher sequence for safety.
def update_watcher(path, pe)
log_msg = "detected rotation of #{path}"
log_msg << "; waiting #{@rotate_wait} seconds" # wait rotate_time if previous file exists
log.info(log_msg)
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Can combine 3 lines.

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fixed 857d9cb

if watcher_needs_update
@update_watcher.call(@path, swap_state(@pe))
else
@io_handler = IOHandler.new(self, &method(:wrap_receive_lines))
@log.info "detected rotation of #{@path}"
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Is this line needed?

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@ganmacs ganmacs Feb 21, 2020

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L658 and L660 is invoked even if watcher_needs_update is false, right?

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Ah, I see.

Signed-off-by: Yuta Iwama <[email protected]>
Signed-off-by: Yuta Iwama <[email protected]>
@ganmacs ganmacs self-assigned this Feb 21, 2020
@ganmacs ganmacs merged commit 2acf3f7 into fluent:master Feb 25, 2020
@ganmacs ganmacs deleted the reduce-Tailwatcher-argument branch February 25, 2020 05:14
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3 participants