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NativeImageLoggingSample.java
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NativeImageLoggingSample.java
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/*
* Copyright 2022 Google LLC
*
* 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
*
* https://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 com.example.logging;
import com.google.cloud.MonitoredResource;
import com.google.cloud.logging.LogEntry;
import com.google.cloud.logging.Logging;
import com.google.cloud.logging.LoggingOptions;
import com.google.cloud.logging.Payload.StringPayload;
import com.google.cloud.logging.Severity;
import java.time.Duration;
import java.time.Instant;
import java.util.Collections;
/** Basic sample application which writes a log message to Cloud Logging. */
public class NativeImageLoggingSample {
/** Runs the Logging Sample Application. */
public static void main(String[] args) throws Exception {
Instant startTime = Instant.now();
// Instantiates a client
Logging client = LoggingOptions.getDefaultInstance().getService();
// The name of the log to write to
String logName = "nativeimage_logging_sample.log";
// The data to write to the log
String text = "This is a log produced by Native Image.";
LogEntry entry =
LogEntry.newBuilder(StringPayload.of(text))
.setSeverity(Severity.INFO)
.setLogName(logName)
.setResource(MonitoredResource.newBuilder("global").build())
.build();
client.write(Collections.singleton(entry));
client.flush();
client.close();
System.out.println(String.format("Logged: %s", text));
System.out.println("Log message written to Cloud Logging.");
System.out.println(
"See your logs in the Cloud Console: https://console.cloud.google.com/logs/viewer "
+ "(Might take a few seconds to load.)");
Instant endTime = Instant.now();
Duration duration = Duration.between(startTime, endTime);
System.out.println("Duration: " + duration.toString());
}
}