feat(helm): allow using config of a router from a file (#1961)

Author: maxkomarychev

helm/cosmo/charts/router/Chart.yaml

@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.12.0
+version: 0.13.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

helm/cosmo/charts/router/README.md

@@ -1,6 +1,6 @@
 # router
 
-![Version: 0.12.0](https://img.shields.io/badge/Version-0.12.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.197.1](https://img.shields.io/badge/AppVersion-0.197.1-informational?style=flat-square)
+![Version: 0.13.0](https://img.shields.io/badge/Version-0.13.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.197.1](https://img.shields.io/badge/AppVersion-0.197.1-informational?style=flat-square)
 
 This is the official Helm Chart for the WunderGraph Cosmo Router.
 
@@ -15,6 +15,7 @@ This is the official Helm Chart for the WunderGraph Cosmo Router.
 | autoscaling.minReplicas | int | `1` |  |
 | autoscaling.targetCPUUtilizationPercentage | int | `80` |  |
 | commonConfiguration | string | `"version: \"1\"\nlog_level: \"info\""` | You can use this to provide the router configuration via yaml. Values here have precedence over the configurations section. For a full list of available configuration options, see https://cosmo-docs.wundergraph.com/router/configuration This value is processed with the helm `tpl` function allowing referencing of variables and inclusion of templates |
+| commonConfigurationPath | string | `""` | Path to a configuration file to embed. If set, this takes precedence over commonConfiguration. The file path is relative to the chart directory and will be processed with the helm `tpl` function. Example: "configs/router-config.yaml" |
 | commonLabels | object | `{}` | Add labels to all deployed resources |
 | configuration.cdnUrl | string | `""` |  |
 | configuration.configPath | string | `""` | The path to the router config file. This does not refer to the execution config. See: https://cosmo-docs.wundergraph.com/router/configuration#config-file |

helm/cosmo/charts/router/templates/config-map.yaml

@@ -11,7 +11,9 @@ metadata:
 data:
   config.yaml: |-
     # User-supplied common configuration:
-    {{- if .Values.commonConfiguration }}
+    {{- if .Values.commonConfigurationPath }}
+    {{- tpl (.Files.Get .Values.commonConfigurationPath) . | nindent 4 }}
+    {{- else if .Values.commonConfiguration }}
     {{- tpl .Values.commonConfiguration . | nindent 4 }}
     {{- end }}
   logLevel: "{{ .Values.configuration.logLevel }}"

helm/cosmo/charts/router/values.yaml

@@ -198,6 +198,11 @@ commonConfiguration: |-
   version: "1"
   log_level: "info"
 
+# -- Path to a configuration file to embed. If set, this takes precedence over commonConfiguration.
+# The file path is relative to the chart directory and will be processed with the helm `tpl` function.
+# Example: "configs/router-config.yaml"
+commonConfigurationPath: ""
+
 # Use this section to pass the graphApiToken or to configure simple settings.
 configuration:
   # -- The router token is used to authenticate the router against the controlplane (required)