api/datadoghq/v2alpha1: add support for SSI targets (#1670)

* api/datadoghq/v2alpha1: add support for SSI targets

* error cleanup

* revert example

* Update docs/configuration.v2alpha1.md

Co-authored-by: Alicia Scott <[email protected]>

* feat(ssi): add tracer config options

This commit adds the tracer config options we've just added.

* Fix tests

* Address PR feedback

* Address PR feedback

* add log to warn for non-compatible agent version

* fix

* fix lint

* fix tests

* update types

---------

Co-authored-by: Mark Spicer <[email protected]>
Co-authored-by: Alicia Scott <[email protected]>
Co-authored-by: Mark Spicer <[email protected]>
Co-authored-by: Celene <[email protected]>

api/datadoghq/v2alpha1/datadogagent_types.go

@@ -184,6 +184,53 @@ type SingleStepInstrumentation struct {
 	// Injector configures the APM Injector.
 	// +optional
 	Injector *InjectorConfig `json:"injector,omitempty"`
+
+	// Targets is a list of targets to apply the auto instrumentation to. The first target that matches the pod will be
+	// used. If no target matches, the auto instrumentation will not be applied.
+	// (Requires Cluster Agent 7.64.0+)
+	// +optional
+	Targets []SSITarget `json:"targets,omitempty"`
+}
+
+// SSITarget is a rule to apply the auto instrumentation to a specific workload using the pod and namespace selectors.
+type SSITarget struct {
+	// Name is the name of the target. It will be appended to the pod annotations to identify the target that was used.
+	// +optional
+	Name string `json:"name,omitempty"`
+	// PodSelector is the pod selector to match the pods to apply the auto instrumentation to. It will be used in
+	// conjunction with the NamespaceSelector to match the pods.
+	// +optional
+	PodSelector *metav1.LabelSelector `json:"podSelector,omitempty"`
+	// NamespaceSelector is the namespace selector to match the namespaces to apply the auto instrumentation to. It will
+	// be used in conjunction with the Selector to match the pods.
+	// +optional
+	NamespaceSelector *NamespaceSelector `json:"namespaceSelector,omitempty"`
+	// TracerVersions is a map of tracer versions to inject for workloads that match the target. The key is the tracer
+	// name and the value is the version to inject.
+	// +optional
+	TracerVersions map[string]string `json:"ddTraceVersions,omitempty"`
+	// TracerConfigs is a list of configuration options to use for the installed tracers. These options will be added
+	// as environment variables in addition to the injected tracer.
+	// +optional
+	// +listType=map
+	// +listMapKey=name
+	TracerConfigs []corev1.EnvVar `json:"ddTraceConfigs,omitempty"`
+}
+
+// NamespaceSelector is a struct to store the configuration for the namespace selector. It can be used to match the
+// namespaces to apply the auto instrumentation to.
+type NamespaceSelector struct {
+	// MatchNames is a list of namespace names to match. If empty, all namespaces are matched.
+	// +optional
+	MatchNames []string `json:"matchNames,omitempty"`
+	// MatchLabels is a map of key-value pairs to match the labels of the namespace. The labels and expressions are
+	// ANDed. This cannot be used with MatchNames.
+	// +optional
+	MatchLabels map[string]string `json:"matchLabels,omitempty"`
+	// MatchExpressions is a list of label selector requirements to match the labels of the namespace. The labels and
+	// expressions are ANDed. This cannot be used with MatchNames.
+	// +optional
+	MatchExpressions []metav1.LabelSelectorRequirement `json:"matchExpressions,omitempty"`
 }
 
 // LanguageDetectionConfig contains the config for Language Detection.