wip

ecs-agent/utils/retry/constant_backoff.go

@@ -0,0 +1,33 @@
+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may
+// not use this file except in compliance with the License. A copy of the
+// License is located at
+//
+//	http://aws.amazon.com/apache2.0/
+//
+// or in the "license" file accompanying this file. This file 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 retry
+
+import "time"
+
+// A simple backoff strategy that backs off the same amount of time for each iteration.
+type ConstantBackoff struct {
+	interval time.Duration
+}
+
+func NewConstantBackoff(interval time.Duration) ConstantBackoff {
+	return ConstantBackoff{interval: interval}
+}
+
+func (cb ConstantBackoff) Duration() time.Duration {
+	return cb.interval
+}
+
+func (cb ConstantBackoff) Reset() {
+	// Nothing to reset
+}

ecs-agent/utils/retry/constant_backoff_test.go

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may
+// not use this file except in compliance with the License. A copy of the
+// License is located at
+//
+//	http://aws.amazon.com/apache2.0/
+//
+// or in the "license" file accompanying this file. This file 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 retry
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConstantBackoff(t *testing.T) {
+	backoff := NewConstantBackoff(2 * time.Second)
+	for i := 0; i < 10; i++ {
+		assert.Equal(t, 2*time.Second, backoff.Duration())
+	}
+}