statefun-flink/statefun-flink-core/src/test/java/org/apache/flink/statefun/flink/core/httpfn/binders/v1/HttpEndpointBinderV1Test.java

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 * 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,
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package org.apache.flink.statefun.flink.core.httpfn.binders.v1;

import static org.hamcrest.Matchers.hasKey;
import static org.junit.Assert.assertThat;

import java.net.URL;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import org.apache.flink.statefun.extensions.ComponentJsonObject;
import org.apache.flink.statefun.flink.core.StatefulFunctionsUniverse;
import org.apache.flink.statefun.flink.core.httpfn.DefaultHttpRequestReplyClientFactory;
import org.apache.flink.statefun.flink.core.httpfn.TransportClientConstants;
import org.apache.flink.statefun.flink.core.message.MessageFactoryKey;
import org.apache.flink.statefun.flink.core.message.MessageFactoryType;
import org.junit.Test;

public final class HttpEndpointBinderV1Test {
  private static final ObjectMapper OBJ_MAPPER = new ObjectMapper(new YAMLFactory());

  private static final String SPEC_YAML_PATH = "http-endpoint-binders/v1.yaml";

  @Test
  public void exampleUsage() throws Exception {
    final ComponentJsonObject component = loadComponentJsonObject(SPEC_YAML_PATH);
    final StatefulFunctionsUniverse universe = testUniverse();

    HttpEndpointBinderV1.INSTANCE.bind(component, universe);

    assertThat(universe.namespaceFunctions(), hasKey("com.foo.bar"));
  }

  private static ComponentJsonObject loadComponentJsonObject(String yamlPath) throws Exception {
    final URL url = HttpEndpointBinderV1Test.class.getClassLoader().getResource(yamlPath);
    final ObjectNode componentObject = OBJ_MAPPER.readValue(url, ObjectNode.class);
    return new ComponentJsonObject(componentObject);
  }

  private static StatefulFunctionsUniverse testUniverse() {
    final StatefulFunctionsUniverse universe =
        new StatefulFunctionsUniverse(
            MessageFactoryKey.forType(MessageFactoryType.WITH_PROTOBUF_PAYLOADS, null));
    universe.bindExtension(
        TransportClientConstants.OKHTTP_CLIENT_FACTORY_TYPE,
        DefaultHttpRequestReplyClientFactory.INSTANCE);
    return universe;
  }
}