Revert "Remove the http-utils module (now embedded in vespajlib)"

This reverts commit 7963cb974fdc63ae529b0c0895ea4ccc339b6a53.

1 files changed, 16 insertions, 0 deletions

diff --git a/http-utils/src/main/java/ai/vespa/util/http/hc4/retry/RetryConsumer.java b/http-utils/src/main/java/ai/vespa/util/http/hc4/retry/RetryConsumer.java
new file mode 100644
index 00000000000..c168f7d50c9
--- /dev/null
+++ b/http-utils/src/main/java/ai/vespa/util/http/hc4/retry/RetryConsumer.java
@@ -0,0 +1,16 @@
+// Copyright 2020 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package ai.vespa.util.http.hc4.retry;
+
+import org.apache.http.client.protocol.HttpClientContext;
+
+import java.time.Duration;
+
+/**
+ * Invoked before performing a delay and retry.
+ *
+ * @author bjorncs
+ */
+@FunctionalInterface
+public interface RetryConsumer<T> {
+    void onRetry(T data, Duration delay, int executionCount, HttpClientContext context);
+}