CRI metada parsing failures using logsCollection

[povilasv]

I get quite a lot of regex pattern does not match errors when using logsCollection preset. Detailed log is below.

What I checked is:

/var/log/pods/kube-system_etcd-rock64-0_2b37ad500d0bbd0af1cb51af3d8b9dd1/etcd/104.log

Does not match regex:

^.*\/(?P<namespace>[^_]+)_(?P<pod_name>[^_]+)_(?P<uid>[a-f0-9\-]{36})\/(?P<container_name>[^\._]+)\/(?P<restart_count>\d+)\.log$

Because uid is 32 chars long, not 36?

I tried looking at Kubernetes code, but couldn't figure out what is the typical length

Detailed long:

2022-09-19T17:20:09.945Z        error   helper/transformer.go:110       Failed to process entry {"kind": "receiver", "name": "filelog", "pipeline": "logs", "operator_id": "extract_metadata_from_filepath", "operator_type": "regex_parser", "error": "regex pattern does not match", "action": "send", "entry": {"observed_timestamp":"2022-09-19T17:20:09.945292155Z","timestamp":"2022-09-19T17:20:09.817869461Z","body":"2022-09-19T17:20:09.817869461Z stderr F {\"level\":\"warn\",\"ts\":\"2022-09-19T17:20:09.817Z\",\"caller\":\"embed/config_logging.go:169\",\"msg\":\"rejected connection\",\"remote-addr\":\"192.168.1.46:22836\",\"server-name\":\"\",\"error\":\"tls: first record does not look like a TLS handshake\"}","attributes":{"log":"{\"level\":\"warn\",\"ts\":\"2022-09-19T17:20:09.817Z\",\"caller\":\"embed/config_logging.go:169\",\"msg\":\"rejected connection\",\"remote-addr\":\"192.168.1.46:22836\",\"server-name\":\"\",\"error\":\"tls: first record does not look like a TLS handshake\"}","log.file.path":"/var/log/pods/kube-system_etcd-rock64-0_2b37ad500d0bbd0af1cb51af3d8b9dd1/etcd/104.log","logtag":"F","stream":"stderr","time":"2022-09-19T17:20:09.817869461Z"},"severity":0,"scope_name":""}}
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*TransformerOperator).HandleEntryError
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/transformer.go:110
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*ParserOperator).ParseWith
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/parser.go:152
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*ParserOperator).ProcessWithCallback
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/parser.go:124
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*ParserOperator).ProcessWith
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/parser.go:110
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*Parser).Process
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/regex.go:110
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*WriterOperator).Write
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/writer.go:65
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*ParserOperator).ProcessWithCallback
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/parser.go:134
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*ParserOperator).ProcessWith
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/parser.go:110
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*Parser).Process
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/regex.go:110
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/transformer/router.(*Transformer).Process
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/transformer/router/router.go:142
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper.(*WriterOperator).Write
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper/writer.go:65
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/input/file.(*Input).emit
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/input/file/file.go:65
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/fileconsumer.(*Reader).ReadToEnd
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/fileconsumer/reader.go:85
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/fileconsumer.(*Manager).consume.func1
        /home/povilasv/gocode/src/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/fileconsumer/file.go:137