CS-Repro-Mattermost/files/alloy/config.alloy

// File-based log sources
loki.source.file "mattermost_logs" {
  targets = [
    { "__path__" = "/mattermost/logs/mattermost.log", "filename" = "/logs-node-1/mattermost.log", "job" = "mattermost" },
  ]
  forward_to = [loki.process.mm_logs_processor.receiver]
}

loki.source.file "mattermost_advanced_logs" {
  targets = [
    { "__path__" = "/mattermost/logs/advancedLogs.log", "filename" = "/logs-node-1/advancedLogs.log", "job" = "mattermost" },
  ]
  forward_to = [loki.process.mm_logs_processor.receiver]
}

loki.source.file "mattermost_ldap_logs" {
  targets = [
    { "__path__" = "/mattermost/logs/advancedLdapLogs.log", "filename" = "/logs-node-1/advancedLdapLogs.log", "job" = "mattermost" },
  ]
  forward_to = [loki.process.mm_logs_processor.receiver]
}

// Process Mattermost logs
loki.process "mm_logs_processor" {
  // First, try to parse as JSON
  stage.json {
    expressions = {
      ts = "timestamp",
      log_level = "level",
      log_msg = "msg",
      log_caller = "caller",
    }
  }

  // Set labels based on extracted fields
  stage.labels {
    values = {
      level = "log_level",
    }
  }

  forward_to = [loki.write.loki.receiver]
}

// API endpoint for direct log pushing
loki.source.api "push_api" {
  http {
    listen_address = "0.0.0.0"
    listen_port = 9999
  }
  forward_to = [loki.write.loki.receiver]
}

// Send all logs to Loki
loki.write "loki" {
  endpoint {
    url = "http://loki:3100/loki/api/v1/push"
  }
}