[Bug] 使用正则处理暴露的容器环境变量提示匹配失败

[jingliming]

需求描述

• 配置采集项，指定暴露容器环境变量
• 使用正则进行数据处理，过滤暴露环境变量中的数据

enable: true
inputs:
  - Type: service_docker_stdout
    Stderr: true
    Stdout: true
    IncludeEnv:
      BW_LOGS_CATALINA: stdout
    ExternalEnvTag:
      BW_LOGS_CATALINA_TAGS: BW_LOGS_CATALINA_TAGS
processors:
  - Type: processor_add_fields
    Fields:
      logCollector: ilogtail
    IgnoreIfExist: false
  - Type: processor_regex
    SourceKey: BW_LOGS_CATALINA_TAGS
    Regex: topic=(\S+)\,tenantId=(\S+)\,clusterCode=(\S+)\,envType=(\S+)\,envCode=(\S+)\,appCode=(\S+)\,projectCode=(\S+)
    Keys:
      - topic
      - tenantId
      - clusterCode
      - envType
      - envCode
      - appCode
      - projectCode
flushers:
  - Type: flusher_stdout
    OnlyStdout: true
  - Type: flusher_kafka_v2
    Brokers:
      - **************
    Topic: **********

期望

能够正常解析

结果

环境变量内容

topic=bizworks-logging-trace,tenantId=102790805516,clusterCode=f5f2f46bbbed4ed08fa57c80364f9ff2,envType=testing,envCode=fastz

提示正则匹配失败

2023-02-17 08:36:19 [WRN] [regex.go:110] [processRegex] [config#/usr/local/ilogtail/./user_yaml_config.d/nginx_stdout.yaml,]	AlarmType:REGEX_UNMATCHED_ALARM	unmatch this log content:topic=bizworks-logging-trace,tenantId=102790805516,clusterCode=f5f2f46bbbed4ed08fa57c80364f9ff2,envType=production,envCode=environmentcode5233,appCode=code8308,projectCode=at-testprojectcode7971	logstore:	config:config#/usr/local/ilogtail/./user_yaml_config.d/nginx_stdout.yaml

[jingliming]

找到问题了，是正则写的有问题，现在可以正常采集了
因为该环境变量部分pod缺少appcode和projectcode，先临时不获取这两个变量了