[OCI SDK] Add default retry policy to avoid HTTP_429

cmd/controller/main.go

@@ -15,6 +15,8 @@ limitations under the License.
 package main
 
 import (
+	_ "github.com/zoom/karpenter-oci/pkg/operator/oci/sdk/retrypolicy/initglobal"
+
 	"github.com/samber/lo"
 	"github.com/zoom/karpenter-oci/pkg/controllers"
 	"sigs.k8s.io/karpenter/pkg/controllers/state"

pkg/operator/oci/sdk/retrypolicy/initglobal/init.go

@@ -0,0 +1,27 @@
+/*
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package initglobal
+
+import (
+	"log"
+
+	"github.com/zoom/karpenter-oci/pkg/operator/oci/sdk/retrypolicy"
+)
+
+// init executes automatically when the package is imported.
+func init() {
+	retrypolicy.SetGlobal()
+	log.Println("[retrypolicy] global OCI SDK retry policy initialized")
+}

pkg/operator/oci/sdk/retrypolicy/retrypolicy.go

@@ -0,0 +1,56 @@
+/*
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package retrypolicy
+
+import (
+	"time"
+
+	"github.com/oracle/oci-go-sdk/v65/common"
+)
+
+// defaultPolicy is built once and treated as immutable/read-only.
+// You can expose it via a getter to avoid accidental mutation.
+var defaultPolicy = common.NewRetryPolicyWithOptions(
+	common.ReplaceWithValuesFromRetryPolicy(common.DefaultRetryPolicyWithoutEventualConsistency()),
+	common.WithMaximumNumberAttempts(8),            // 1 try + 7 retries
+	common.WithExponentialBackoff(30*time.Second, 2.0), // max sleep, base
+	common.WithShouldRetryOperation(func(resp common.OCIOperationResponse) bool {
+		if resp.Error == nil {
+			return false
+		}
+		if svcErr, ok := common.IsServiceError(resp.Error); ok {
+			switch svcErr.GetHTTPStatusCode() {
+			case 429:
+				return true
+			case 409:
+				return svcErr.GetCode() == "IncorrectState"
+			default:
+				return false
+			}
+		}
+		return common.IsNetworkError(resp.Error)
+	}),
+)
+
+// Default returns a pointer to the shared default retry policy.
+func Default() *common.RetryPolicy {
+	return &defaultPolicy
+}
+
+// SetGlobal applies Default() SDK-wide, so every OCI request uses it unless
+// a client/request overrides RequestMetadata.RetryPolicy.
+func SetGlobal() {
+	common.GlobalRetry = Default()
+}