Enhance support for multi-tenancy (#1371)

This enhances every ARC controller and the various K8s custom resources so that the user can now configure a custom GitHub API credentials (that is different from the default one configured per the ARC instance).

Ref https://github.com/actions-runner-controller/actions-runner-controller/issues/1067#issuecomment-1043716646

api/v1alpha1/horizontalrunnerautoscaler_types.go

@@ -60,6 +60,9 @@ type HorizontalRunnerAutoscalerSpec struct {
 	// The earlier a scheduled override is, the higher it is prioritized.
 	// +optional
 	ScheduledOverrides []ScheduledOverride `json:"scheduledOverrides,omitempty"`
+
+	// +optional
+	GitHubAPICredentialsFrom *GitHubAPICredentialsFrom `json:"githubAPICredentialsFrom,omitempty"`
 }
 
 type ScaleUpTrigger struct {

api/v1alpha1/runner_types.go

@@ -76,6 +76,16 @@ type RunnerConfig struct {
 
 	// +optional
 	ContainerMode string `json:"containerMode,omitempty"`
+
+	GitHubAPICredentialsFrom *GitHubAPICredentialsFrom `json:"githubAPICredentialsFrom,omitempty"`
+}
+
+type GitHubAPICredentialsFrom struct {
+	SecretRef SecretReference `json:"secretRef,omitempty"`
+}
+
+type SecretReference struct {
+	Name string `json:"name"`
 }
 
 // RunnerPodSpec defines the desired pod spec fields of the runner pod

api/v1alpha1/zz_generated.deepcopy.go

@@ -90,6 +90,22 @@ func (in *CheckRunSpec) DeepCopy() *CheckRunSpec {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *GitHubAPICredentialsFrom) DeepCopyInto(out *GitHubAPICredentialsFrom) {
+	*out = *in
+	out.SecretRef = in.SecretRef
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GitHubAPICredentialsFrom.
+func (in *GitHubAPICredentialsFrom) DeepCopy() *GitHubAPICredentialsFrom {
+	if in == nil {
+		return nil
+	}
+	out := new(GitHubAPICredentialsFrom)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *GitHubEventScaleUpTriggerSpec) DeepCopyInto(out *GitHubEventScaleUpTriggerSpec) {
 	*out = *in
@@ -231,6 +247,11 @@ func (in *HorizontalRunnerAutoscalerSpec) DeepCopyInto(out *HorizontalRunnerAuto
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
+	if in.GitHubAPICredentialsFrom != nil {
+		in, out := &in.GitHubAPICredentialsFrom, &out.GitHubAPICredentialsFrom
+		*out = new(GitHubAPICredentialsFrom)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HorizontalRunnerAutoscalerSpec.
@@ -425,6 +446,11 @@ func (in *RunnerConfig) DeepCopyInto(out *RunnerConfig) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.GitHubAPICredentialsFrom != nil {
+		in, out := &in.GitHubAPICredentialsFrom, &out.GitHubAPICredentialsFrom
+		*out = new(GitHubAPICredentialsFrom)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new RunnerConfig.
@@ -1136,6 +1162,21 @@ func (in *ScheduledOverride) DeepCopy() *ScheduledOverride {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *SecretReference) DeepCopyInto(out *SecretReference) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new SecretReference.
+func (in *SecretReference) DeepCopy() *SecretReference {
+	if in == nil {
+		return nil
+	}
+	out := new(SecretReference)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *WorkVolumeClaimTemplate) DeepCopyInto(out *WorkVolumeClaimTemplate) {
 	*out = *in