[FLINK-19017] Add a RequestSummary class
This commits adds a data class to carry lightweight
summary of the remote request. To main usage intention
is for richer downstream logging.
diff --git a/statefun-flink/statefun-flink-core/src/main/java/org/apache/flink/statefun/flink/core/reqreply/ToFunctionRequestSummary.java b/statefun-flink/statefun-flink-core/src/main/java/org/apache/flink/statefun/flink/core/reqreply/ToFunctionRequestSummary.java
new file mode 100644
index 0000000..4aa3a00
--- /dev/null
+++ b/statefun-flink/statefun-flink-core/src/main/java/org/apache/flink/statefun/flink/core/reqreply/ToFunctionRequestSummary.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.flink.statefun.flink.core.reqreply;
+
+import java.util.Objects;
+import org.apache.flink.statefun.sdk.Address;
+
+/**
+ * ToFunctionRequestSummary - represents a summary of that request, it is indented to be used as an
+ * additional context for logging.
+ */
+public final class ToFunctionRequestSummary {
+ private final Address address;
+ private final int batchSize;
+ private final int totalSizeInBytes;
+ private final int numberOfStates;
+
+ public ToFunctionRequestSummary(
+ Address address, int totalSizeInBytes, int numberOfStates, int batchSize) {
+ this.address = Objects.requireNonNull(address);
+ this.totalSizeInBytes = totalSizeInBytes;
+ this.numberOfStates = numberOfStates;
+ this.batchSize = batchSize;
+ }
+
+ @Override
+ public String toString() {
+ return "ToFunctionRequestSummary("
+ + "address="
+ + address
+ + ", batchSize="
+ + batchSize
+ + ", totalSizeInBytes="
+ + totalSizeInBytes
+ + ", numberOfStates="
+ + numberOfStates
+ + ')';
+ }
+}
