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Support configuring images via RELATED_IMAGE_ environment variables #2325

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merged 1 commit into from
Nov 13, 2023
Merged

Support configuring images via RELATED_IMAGE_ environment variables #2325

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16 changes: 16 additions & 0 deletions .chloggen/related_images_env_vars.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
change_type: enhancement

# The name of the component, or a single word describing the area of concern, (e.g. operator, target allocator, github action)
component: operator

# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
note: Support configuring images via RELATED_IMAGE_ environment variables

# One or more tracking issues related to the change
issues: [2326]

# (Optional) One or more lines of additional information to render under the primary note.
# These lines will be padded with 2 spaces and then inserted directly into the document.
# Use pipe (|) for multiline entries.
subtext:
30 changes: 20 additions & 10 deletions main.go
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Expand Up @@ -75,6 +75,16 @@ func init() {
// +kubebuilder:scaffold:scheme
}

// stringFlagOrEnv defines a string flag which can be set by an environment variable.
// Precedence: flag > env var > default value.
func stringFlagOrEnv(p *string, name string, envName string, defaultValue string, usage string) {
envValue := os.Getenv(envName)
if envValue != "" {
defaultValue = envValue
}
pflag.StringVar(p, name, defaultValue, usage)
}

func main() {
// registers any flags that underlying libraries might use
opts := zap.Options{}
Expand Down Expand Up @@ -112,16 +122,16 @@ func main() {
pflag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
pflag.StringVar(&collectorImage, "collector-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-collector:%s", v.OpenTelemetryCollector), "The default OpenTelemetry collector image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&targetAllocatorImage, "target-allocator-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/target-allocator:%s", v.TargetAllocator), "The default OpenTelemetry target allocator image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&operatorOpAMPBridgeImage, "operator-opamp-bridge-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/operator-opamp-bridge:%s", v.OperatorOpAMPBridge), "The default OpenTelemetry Operator OpAMP Bridge image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationJava, "auto-instrumentation-java-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-java:%s", v.AutoInstrumentationJava), "The default OpenTelemetry Java instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationNodeJS, "auto-instrumentation-nodejs-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-nodejs:%s", v.AutoInstrumentationNodeJS), "The default OpenTelemetry NodeJS instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationPython, "auto-instrumentation-python-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-python:%s", v.AutoInstrumentationPython), "The default OpenTelemetry Python instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationDotNet, "auto-instrumentation-dotnet-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-dotnet:%s", v.AutoInstrumentationDotNet), "The default OpenTelemetry DotNet instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationGo, "auto-instrumentation-go-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-go-instrumentation/autoinstrumentation-go:%s", v.AutoInstrumentationGo), "The default OpenTelemetry Go instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationApacheHttpd, "auto-instrumentation-apache-httpd-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationApacheHttpd), "The default OpenTelemetry Apache HTTPD instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringVar(&autoInstrumentationNginx, "auto-instrumentation-nginx-image", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationNginx), "The default OpenTelemetry Nginx instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&collectorImage, "collector-image", "RELATED_IMAGE_COLLECTOR", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-collector:%s", v.OpenTelemetryCollector), "The default OpenTelemetry collector image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&targetAllocatorImage, "target-allocator-image", "RELATED_IMAGE_TARGET_ALLOCATOR", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/target-allocator:%s", v.TargetAllocator), "The default OpenTelemetry target allocator image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&operatorOpAMPBridgeImage, "operator-opamp-bridge-image", "RELATED_IMAGE_OPERATOR_OPAMP_BRIDGE", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/operator-opamp-bridge:%s", v.OperatorOpAMPBridge), "The default OpenTelemetry Operator OpAMP Bridge image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationJava, "auto-instrumentation-java-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_JAVA", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-java:%s", v.AutoInstrumentationJava), "The default OpenTelemetry Java instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationNodeJS, "auto-instrumentation-nodejs-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_NODEJS", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-nodejs:%s", v.AutoInstrumentationNodeJS), "The default OpenTelemetry NodeJS instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationPython, "auto-instrumentation-python-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_PYTHON", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-python:%s", v.AutoInstrumentationPython), "The default OpenTelemetry Python instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationDotNet, "auto-instrumentation-dotnet-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_DOTNET", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-dotnet:%s", v.AutoInstrumentationDotNet), "The default OpenTelemetry DotNet instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationGo, "auto-instrumentation-go-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_GO", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-go-instrumentation/autoinstrumentation-go:%s", v.AutoInstrumentationGo), "The default OpenTelemetry Go instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationApacheHttpd, "auto-instrumentation-apache-httpd-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_APACHE_HTTPD", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationApacheHttpd), "The default OpenTelemetry Apache HTTPD instrumentation image. This image is used when no image is specified in the CustomResource.")
stringFlagOrEnv(&autoInstrumentationNginx, "auto-instrumentation-nginx-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_NGINX", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationNginx), "The default OpenTelemetry Nginx instrumentation image. This image is used when no image is specified in the CustomResource.")
pflag.StringArrayVar(&labelsFilter, "labels", []string{}, "Labels to filter away from propagating onto deploys")
pflag.IntVar(&webhookPort, "webhook-port", 9443, "The port the webhook endpoint binds to.")
pflag.StringVar(&tlsOpt.minVersion, "tls-min-version", "VersionTLS12", "Minimum TLS version supported. Value must match version names from https://golang.org/pkg/crypto/tls/#pkg-constants.")
Expand Down
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