fix: missing tags on target manager config field

[lvlcn-t]

Motivation

The implementation of #101 introduced a bug with its embedded Config struct to the TargetManagerConfig.

Viper or rather the underlying library mapstructure doesn't unmarshal the embedded fields of the Config struct directly in the TargetManagerConfig struct. It rather uses the internal struct key of it. So the mapstructure library sees the struct like this:

type TargetManagerConfig struct {
	Config Config
	Gitlab GitlabTargetManagerConfig `yaml:"gitlab" mapstructure:"gitlab"`
}

That means that the startup config currently needs a Config key as part of the targetManager key which has the general configuration options for the targetManager. So an example configuration currently needs to look like this:

targetManager:
  Config:
    checkInterval: 1m
    registrationInterval: 1m
    updateInterval: 1m
    unhealthyThreshold: 3m
  gitlab:
    baseUrl: https://gitlab.com
    projectId: 1234

Reference

spf13/viper#797
https://pkg.go.dev/github.com/mitchellh/mapstructure#hdr-Embedded_Structs_and_Squashing

Changes

I've added the missing yaml and mapstructure tags for the embedded struct.

Now the configuration can again look like this:

targetManager:
  checkInterval: 1m
  registrationInterval: 1m
  updateInterval: 1m
  unhealthyThreshold: 3m
  gitlab:
    baseUrl: https://gitlab.com
    projectId: 1234

For additional information look at the commits.

Tests done

• Unit tests succeeded.
• E2E tests succeeded.

Manual e2e tests

I've added a debug log after unmarshaling the startup config into its config struct:

$ go run main.go run --config .tmp/start-config.yaml 
Using config file: .tmp/start-config.yaml
{"time":"2024-02-19T17:06:07.44296144+01:00","level":"DEBUG","source":{"function":"github.com/caas-team/sparrow/cmd.NewCmdRun.run.func1","file":"/home/tom/dev/sparrow/cmd/run.go","line":75},"msg":"Config loaded","config":{"SparrowName":"dev-tom.local.sparrow.com","Loader":{"Type":"file","Interval":0,"Http":{"Url":"https://myconfig.example.com/config.yaml","Token":"","Timeout":30000000000,"RetryCfg":{"Count":3,"Delay":10000000000}},"File":{"Path":"./.tmp/run-config.yaml"}},"Api":{"ListeningAddress":":8080"},"TargetManager":{"CheckInterval":60000000000,"RegistrationInterval":60000000000,"UpdateInterval":60000000000,"UnhealthyThreshold":180000000000,"Gitlab":{"BaseURL":"https://gitlab.com","Token":"","ProjectID":123456}}}}
{"time":"2024-02-19T17:06:07.443524529+01:00","level":"INFO","source":{"function":"github.com/caas-team/sparrow/cmd.NewCmdRun.run.func1","file":"/home/tom/dev/sparrow/cmd/run.go","line":81},"msg":"Running sparrow"}
{"time":"2024-02-19T17:06:07.443626652+01:00","level":"INFO","source":{"function":"github.com/caas-team/sparrow/pkg/sparrow/targets.(*gitlabTargetManager).Reconcile","file":"/home/tom/dev/sparrow/pkg/sparrow/targets/gitlab.go","line":77},"msg":"Starting global gitlabTargetManager reconciler"}
{"time":"2024-02-19T17:06:07.443742549+01:00","level":"INFO","source":{"function":"github.com/caas-team/sparrow/pkg/config.(*FileLoader).Run","file":"/home/tom/dev/sparrow/pkg/config/file.go","line":69},"msg":"File Loader disabled"}
{"time":"2024-02-19T17:06:07.443776101+01:00","level":"INFO","source":{"function":"github.com/caas-team/sparrow/pkg/api.(*api).Run.func1","file":"/home/tom/dev/sparrow/pkg/api/api.go","line":76},"msg":"Serving Api","addr":":8080"}

TODO

• I've assigned this PR to myself
• I've labeled this PR correctly