feat: Prepare helm chart for 0.3.0

[niklastreml]

Motivation

Since #69 added servicemonitors to the helm chart, we should also bump the chart version.

Changes

• bumped chart version to 0.0.4

For additional information look at the commits.

[puffitos]

Can the chart be deployed in its current state?

[eumel8]

panic: failed to read config file open tmconfig.yaml: no such file or directory

so, this is required?

[puffitos]

panic: failed to read config file open tmconfig.yaml: no such file or directory

so, this is required?

We should release 0.0.3 and use that image for the chart. Once #65 is merged, we're good to go.

[niklastreml]

I've bumped the charts appVersion to v0.3.0 to prepare for release

[lvlcn-t]

I've fixed a bug where the yaml couldn't be parsed if the service monitor is enabled but no labels were set.

Now values like this are vaild:

# -- Configure a service monitor for prometheus-operator
serviceMonitor:
  # -- Enable the serviceMonitor
  enabled: true
  # -- Sets the scrape interval
  interval: 30s
  # -- Sets the scrape timeout
  scrapeTimeout: 5s
  # -- Additional label added to the service Monitor
  labels: {}

[niklastreml]

please look at #75, as that pr fixes e2e and allows us to properly test 0.3.0 internally

[y-eight]

Pls look at last 2 comments #75

[niklastreml]

there is still a bug with marshalling env variables correctly, it is semi fixed in viper 1.18.0 but was hidden behind a feature flag in 1.18.2 due to causing a different bug. That bug only appears when using fun stuff like pointer pointers, so we should be fine I think.

spf13/viper#1429
spf13/viper#1715

[lvlcn-t]

Shouldn't the chart work out-of-the-box without adjusting any values?

Currently that wouldn't be the case since the name and loader are mandatory:

$ helm upgrade sparrow chart/ -i --atomic --set image.tag=commit-b1dd2fc

Using config file: /config/.sparrow.yaml
{"time":"2024-01-18T19:08:59.750947469Z","level":"ERROR","source":{"function":"github.com/caas-team/sparrow/pkg/config.(*Config).Validate","file":"/home/runner/work/sparrow/sparrow/pkg/config/validate.go","line":40},"msg":"The name of the sparrow must be DNS compliant"}
{"time":"2024-01-18T19:08:59.751057558Z","level":"ERROR","source":{"function":"github.com/caas-team/sparrow/pkg/config.(*Config).Validate","file":"/home/runner/work/sparrow/sparrow/pkg/config/validate.go","line":47},"msg":"The loader http url is not a valid url"}
Error: error while validating the config: validation of configuration failed

...

error while validating the config: validation of configuration failed
Stream closed EOF for default/sparrow-75d554645d-ms8zq (sparrow)

I think we should still include required default configs to improve the user experience with this chart.

[niklastreml]

added some defaults, that do nothing

[lvlcn-t]

LGTM I'll do another PR for docs asap so we can release v0.3.0 today