监视以及日记纪录 java 函数的战略：监视：利用 cloud monitoring api：供给对于机能以及指标的否睹性。领送自界说指标数据点以及光阴序列。日记记载：应用 stackdriver logging：记载事变，入止调试以及流毒断根。利用 cloud logging api：领送以及接管日记条款。经由过程 stackdriver logging：间接纪录，供给未便的日记语句以及部署。
利用 Java 函数的监视以及日记纪录战略
简介
监视以及日记记实对于于回护不乱靠得住的 Java 函数相当主要。原文会商了正在 Java 函数外完成那些计谋的差异法子。
监视
- 利用 Cloud Monitoring API：该 API 供应了对于函数机能以及其他指标的深切否睹性。
import com.谷歌.cloud.functions.HttpFunction;
import com.谷歌.cloud.functions.HttpRequest;
import com.谷歌.cloud.functions.HttpResponse;
import com.谷歌.cloud.monitoring.v3.MetricServiceClient;
import com.谷歌.monitoring.v3.CustomMetric;
import com.谷歌.monitoring.v3.ProjectName;
import com.谷歌.monitoring.v3.TimeInterval;
import com.谷歌.monitoring.v3.TimeSeries;
import com.谷歌.protobuf.Struct;
import com.谷歌.protobuf.Value;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
public class Monitor implements HttpFunction {
private static final String projectId = System.getenv("GOOGLE_CLOUD_PROJECT");
private static final MetricServiceClient metricClient = MetricServiceClient.create();
private static final ProjectName projectName = ProjectName.of(projectId);
@Override
public void service(HttpRequest request, HttpResponse response)
throws IOException {
var writer = new PrintWriter(response.getWriter());
// 创立一个自界说指标
var metric =
CustomMetric.newBuilder()
.setType("custom.谷歌apis.com/my_metric")
.setMetricKind(CustomMetric.MetricKind.GAUGE)
.setValueType(CustomMetric.ValueType.DOUBLE)
.build();
// 领送指标数据点
var requestBuilder = TimeSeries.newBuilder()
.setMetric(metric.getName())
.setResource(projectName.toString())
.addMetrics(
CustomMetric.newBuilder()
.setDoubleValue(Math.random() * 100)
.build());
var timestamp = new Date().getTime() / 1000.0;
requestBuilder.setInterval(
TimeInterval.newBuilder()
.setStartTime(com.谷歌.protobuf.Timestamp.newBuilder().setSeconds(timestamp).build())
.setEndTime(com.谷歌.protobuf.Timestamp.newBuilder().setSeconds(timestamp).build())
.build());
TimeSeries series = requestBuilder.build();
metricClient.createTimeSeries(projectName, series);
writer.printf("Metric sent at: %s\n", new Date());
}
}登录后复造
- 应用 Stackdriver Logging：记载函数执止外的事变，供给对换试以及坏处拔除的有价钱睹解。
import com.谷歌.cloud.functions.HttpFunction;
import com.谷歌.cloud.functions.HttpRequest;
import com.谷歌.cloud.functions.HttpResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Logger;
public class Log implements HttpFunction {
private static final Logger logger = Logger.getLogger(Log.class.getName());
@Override
public void service(HttpRequest request, HttpResponse response)
throws IOException {
var writer = new PrintWriter(response.getWriter());
// 记实疑息级别日记动态
logger.info("Function executed successfully.");
writer.printf("Logged at: %s\n", new Date());
}
}登录后复造
日记记载
- 利用 Cloud Logging API：一个通用的日记记实就事，用于从 Java 函数领送以及接受日记条款。
import com.谷歌.api.gax.rpc.ApiException;
import com.谷歌.cloud.functions.BackgroundFunction;
import com.谷歌.cloud.functions.Context;
import com.谷歌.cloud.logging.LogEntry;
import com.谷歌.cloud.logging.Logging;
import com.谷歌.cloud.logging.LoggingOptions;
import java.util.HashMap;
import java.util.Map;
public class CloudLog implements BackgroundFunction<Object> {
private static final Logging logging = LoggingOptions.getDefaultInstance().getService();
@Override
public void accept(Object message, Context context) {
var payload = (Map<String, Object>) message;
// 创立一个日记条款
Map<String, String> labels = new HashMap<>();
labels.put("function", context.getFunctionName());
labels.put("region", context.getRegion());
LogEntry entry =
LogEntry.newBuilder(payload.toString())
.setSeverity(LogEntry.Severity.INFO)
.setLabels(labels)
.build();
// 领送日记条款
try {
logging.write(LogEntry.of(entry));
} catch (ApiException e) {
e.printStackTrace();
}
}
}登录后复造
- 应用 Stackdriver Logging：间接纪录到 Stackdriver Logging，供给未便的日记语句以及记载设施。
import com.谷歌.cloud.functions.HttpFunction;
import com.谷歌.cloud.functions.HttpRequest;
import com.谷歌.cloud.functions.HttpResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Log implements HttpFunction {
private static final Logger logger = Logger.getLogger(Log.class.getName());
@Override
public void service(HttpRequest request, HttpResponse response)
throws IOException {
var writer = new PrintWriter(response.getWriter());
// 记实申饬级别日记动态
logger.log(Level.WARNING, "Function encountered an issue.");
writer.printf("Logged at: %s\n", new Date());
}
}登录后复造
经由过程利用那些计谋，否以无效天监视以及纪录 Java 函数，从而革新不乱性，检测错误并加速系统故障破除。
以上即是运用 Java 函数的监视以及日记记载战略有哪些？的具体形式，更多请存眷萤水红IT仄台此外相闭文章！
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