feat: Update Couchbase parsers to use LoggingReceiverMacro

apps/couchbase.go

@@ -251,7 +251,7 @@ func (p LoggingProcessorMacroCouchbase) Expand(ctx context.Context) []confgenera
 			LoggingProcessorParseRegexComplex: confgenerator.LoggingProcessorParseRegexComplex{
 				Parsers: []confgenerator.RegexParser{
 					{
-						Regex: `^\[(?<type>[^:]*):(?<level>[^,]*),(?<timestamp>\d+-\d+-\d+T\d+:\d+:\d+.\d+Z),(?<node_name>[^:]*):([^:]+):(?<source>[^\]]+)\](?<message>.*)$`,
+						Regex: `^\[(?<type>[^:]*):(?<level>[^,]*),(?<timestamp>\d+-\d+-\d+T\d+:\d+:\d+.\d+Z),(?<node_name>[^:]*):([^:]+):(?<source>[^\]]+)\](?<message>[\s|\S]*)?`,
 						Parser: confgenerator.ParserShared{
 							TimeKey:    "timestamp",
 							TimeFormat: "%Y-%m-%dT%H:%M:%S.%L",
@@ -385,7 +385,7 @@ func (p LoggingProcessorMacroCouchbaseGOXDCR) Expand(ctx context.Context) []conf
 			LoggingProcessorParseRegexComplex: confgenerator.LoggingProcessorParseRegexComplex{
 				Parsers: []confgenerator.RegexParser{
 					{
-						Regex: `^(?<timestamp>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d*Z) (?<level>\w+) (?<log_type>\w+.\w+): (?<message>.*)$`,
+						Regex: `^(?<timestamp>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d*Z) (?<level>\w+) (?<log_type>\w+.\w+): (?<message>[\s|\S]*)?`,
 						Parser: confgenerator.ParserShared{
 							TimeKey:    "timestamp",
 							TimeFormat: "%Y-%m-%dT%H:%M:%S.%L",

transformation_test/testdata/logging_processor-couchbase-general/output_fluentbit.yaml

@@ -37,7 +37,10 @@
     timestamp: 2025-08-18T09:16:33.764000000Z
   - jsonPayload:
       level: debug
-      message: "Rebalance progress: 45% completed"
+      message: |-
+        Rebalance progress: 45% completed
+        Continuation line giving rebalance details
+        Still continuing additional rebalance logs with memory usage stats...
       node_name: ns_1@127.0.0.1
       source: rebalance
       type: ns_server

transformation_test/testdata/logging_processor-couchbase-goxcdr/output_fluentbit.yaml

@@ -22,7 +22,9 @@
   - jsonPayload:
       level: ERROR
       log_type: Router
-      message: Failed to route mutation for key "user:12345", retrying...
+      message: |-
+        Failed to route mutation for key "user:12345", retrying...
+        Additional detail: document size exceeded configured threshold
     labels:
       compute.googleapis.com/resource_name: hostname
       logging.googleapis.com/instrumentation_source: agent.googleapis.com/couchbase_goxdcr