Keep 'class' method to avoid error with Sigdump.dump on server stop. #2186
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When stopping fluentd, sometime I get follwoing error message on stderr; ``` Unexpected error undefined method `class' for #<Fluent::Plugin::RecordTransformerFilter::RubyPlaceholderExpander::CleanroomExpander:0x00007f7f1aca50d0> /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:74:in `block in dump_object_count' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:73:in `each_object' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:73:in `dump_object_count' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:18:in `block in dump' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:136:in `open' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:136:in `_open_dump_path' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/sigdump-0.2.4/lib/sigdump.rb:14:in `dump' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/serverengine-2.0.7/lib/serverengine/server.rb:74:in `dump' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/serverengine-2.0.7/lib/serverengine/server.rb:112:in `block (2 levels) in install_signal_handlers' /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/serverengine-2.0.7/lib/serverengine/signal_thread.rb:96:in `main' ``` This cause Sigdump.dump fails with CleanroomExpander because it will call `class` method for all objects to gathering stats. This patch just keep `class` method to avoid error. Signed-off-by: Tatsuki Sugiura <sugi@nemui.org>
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When stopping fluentd, sometime I get follwoing error message on stderr;
This cause by Sigdump.dump fails with CleanroomExpander because it will call
classmethod for all objects to gathering stats.This patch just keep
classmethod to avoid error.