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Support multiline logs from multiple log groups #76

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Support multiline logs from multiple log groups #76

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7 changes: 5 additions & 2 deletions lib/logstash/inputs/cloudwatch_logs.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
require "logstash/namespace"
require "logstash/plugin_mixins/aws_config"
require "logstash/timestamp"
require "logstash/codecs/identity_map_codec"
require "time"
require "stud/interval"
require "aws-sdk"
Expand Down Expand Up @@ -93,7 +94,9 @@ def register
@logger.info("No sincedb_path set, generating one based on the log_group setting",
:sincedb_path => @sincedb_path, :log_group => @log_group)
end

# Wrap codec in multiline plugin's pseudo-codec, identity_map_codec, to support multiline
# streams from multiple sources (i.e. log groups).
@codec = LogStash::Codecs::IdentityMapCodec.new(@codec)
end #def register

public
Expand Down Expand Up @@ -208,7 +211,7 @@ def process_group(group)
private
def process_log(log, group)

@codec.decode(log.message.to_str) do |event|
@codec.decode(log.message.to_str, identity=group) do |event|
event.set("@timestamp", parse_time(log.timestamp))
event.set("[cloudwatch_logs][ingestion_time]", parse_time(log.ingestion_time))
event.set("[cloudwatch_logs][log_group]", group)
Expand Down