/
LifecycleObserverUrlClient.java
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/
LifecycleObserverUrlClient.java
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/*
* Copyright © 2023 Apple Inc. and the ServiceTalk project authors
*
* 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 io.servicetalk.examples.http.observer;
import io.servicetalk.http.api.BlockingHttpClient;
import io.servicetalk.http.api.HttpLifecycleObserver;
import io.servicetalk.http.netty.HttpClients;
import io.servicetalk.http.netty.HttpLifecycleObserverRequesterFilter;
import io.servicetalk.http.utils.HttpLifecycleObservers;
import static io.servicetalk.logging.api.LogLevel.TRACE;
/**
* An example multi-address client that shows {@link HttpLifecycleObserver} usage.
*/
public class LifecycleObserverUrlClient {
public static void main(String[] args) throws Exception {
// Note: this example demonstrates only blocking-aggregated programming paradigm, for asynchronous and
// streaming API see helloworld examples.
try (BlockingHttpClient client = HttpClients.forMultiAddressUrl().initializer((scheme, address, builder) -> {
// Append this filter first for most cases to maximize visibility!
// See javadocs on HttpLifecycleObserverRequesterFilter for more details on filter ordering.
// If necessary, users can set different filters based on `scheme` and/or `address`.
builder.appendClientFilter(new HttpLifecycleObserverRequesterFilter(
HttpLifecycleObservers.logging("servicetalk-examples-http-observer-logger", TRACE)));
}).buildBlocking()) {
client.request(client.get("http://localhost:8080/"));
// Ignore the response for this example. See logs for HttpLifecycleObserver results.
}
}
}