improve mntr regex to match user specific keys

[freyayunfu]

Component(s)

receiver/zookeeper

What happened?

Description

Seeing below warning messages from zookeeperreceiver

{"level":"warn","ts":1692234961.9064589,"caller":"zookeeperreceiver@v0.82.0/scraper.go:144","msg":"unexpected line in response","kind":"receiver","name":"receiver_creator/zookeeper","data_type":"metrics","name":"zookeeper//receiver_creator/zookeeper{endpoint=\"10.212.193.34:2181\"}/k8s_observer/9d39a24e-2e8d-46bf-bffd-2b45edc90a75","command":"mntr","line":"zk_max_pkc-supreme-fox_write_per_namespace\t42343"}

Steps to Reproduce

Currently, if the line includes uses specific keys, like zk_max_pkc-supreme-fox_write_per_namespace\t42343, our regex would not be able to parse it. And would give unexpected line in response warning message.

Expected Result

If we update the regex into

	var zookeeperFormatRE = regexp.MustCompile(`^(zk_\w[\w\.\-]*)\s+([\w\.\-]+)`)

Then line zk_max_pkc-supreme-fox_write_per_namespace\t42343 would be successfully split into

key: zk_max_pkc-supreme-fox_write_per_namespace
value: 42343

Similar issue handled by the other repo: influxdata/telegraf#7533

Collector version

v0.82.0

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

No response

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners:

• receiver/zookeeper: @djaglowski

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[crobert-1]

Since the code owner has commented positively on the PR I'll remove the needs triage label, and assign to @freyayunfu as a PR has been opened. Please let me know if this is incorrect.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/zookeeper: @djaglowski

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

This issue has been closed as inactive because it has been stale for 120 days with no activity.