Question

我一直试图根据dropwizard:1.1.0

找出我的一个项目的MetricRegistry详细信息

这里的一个小小的混淆是我看到我的服务用于localhost:8181/metrics（adminConnector）的版本是 3.1.3 ，这不是最新版本，而是{{1}中包含的版本（注意：+ - io.dropwizard.metrics：metrics-core：jar：3.2.2在依赖项：树下面）

使用的相对POM依赖关系是：

dropwizard-core

项目的

<dependency> <groupId>io.dropwizard</groupId> <artifactId>dropwizard-core</artifactId> <version>1.1.0</version> </dependency> <dependency> <groupId>io.federecio</groupId> <artifactId>dropwizard-swagger</artifactId> <version>0.7.0</version> </dependency> 如下：

mvn dependency:tree

只是想知道，Dropwizard如何配置MetricRegistry？

其他详细信息（如果需要）： -

我正在使用guice注入绑定+- io.dropwizard:dropwizard-core:jar:1.1.0:compile [INFO] | +- io.dropwizard:dropwizard-util:jar:1.1.0:compile [INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.0:compile [INFO] | | +- com.google.code.findbugs:jsr305:jar:3.0.1:compile [INFO] | | \- joda-time:joda-time:jar:2.9.7:compile [INFO] | +- io.dropwizard:dropwizard-jackson:jar:1.1.0:compile [INFO] | | +- com.fasterxml.jackson.core:jackson-core:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.core:jackson-databind:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-guava:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.module:jackson-module-afterburner:jar:2.8.7:compile [INFO] | | +- com.fasterxml.jackson.datatype:jackson-datatype-joda:jar:2.8.7:compile [INFO] | | +- org.slf4j:slf4j-api:jar:1.7.24:compile [INFO] | | \- ch.qos.logback:logback-classic:jar:1.2.1:compile [INFO] | +- io.dropwizard:dropwizard-validation:jar:1.1.0:compile [INFO] | | +- org.hibernate:hibernate-validator:jar:5.3.4.Final:compile [INFO] | | | +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile [INFO] | | | \- com.fasterxml:classmate:jar:1.3.1:compile [INFO] | | \- org.glassfish:javax.el:jar:3.0.0:compile [INFO] | +- io.dropwizard:dropwizard-configuration:jar:1.1.0:compile [INFO] | | \- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:jar:2.8.7:compile [INFO] | | \- org.yaml:snakeyaml:jar:1.17:compile [INFO] | +- io.dropwizard:dropwizard-logging:jar:1.1.0:compile [INFO] | | +- io.dropwizard.metrics:metrics-logback:jar:3.2.2:compile [INFO] | | +- org.slf4j:jul-to-slf4j:jar:1.7.24:compile [INFO] | | +- ch.qos.logback:logback-core:jar:1.2.1:compile [INFO] | | +- org.slf4j:log4j-over-slf4j:jar:1.7.24:compile [INFO] | | +- org.slf4j:jcl-over-slf4j:jar:1.7.24:compile [INFO] | | \- org.eclipse.jetty:jetty-util:jar:9.4.2.v20170220:compile [INFO] | +- io.dropwizard:dropwizard-metrics:jar:1.1.0:compile [INFO] | +- io.dropwizard:dropwizard-jersey:jar:1.1.0:compile [INFO] | | +- org.glassfish.jersey.core:jersey-server:jar:2.25.1:compile [INFO] | | | +- org.glassfish.jersey.core:jersey-common:jar:2.25.1:compile [INFO] | | | | +- org.glassfish.jersey.bundles.repackaged:jersey-guava:jar:2.25.1:compile [INFO] | | | | \- org.glassfish.hk2:osgi-resource-locator:jar:1.0.1:compile [INFO] | | | +- org.glassfish.jersey.core:jersey-client:jar:2.25.1:compile [INFO] | | | +- org.glassfish.jersey.media:jersey-media-jaxb:jar:2.25.1:compile [INFO] | | | +- javax.annotation:javax.annotation-api:jar:1.2:compile [INFO] | | | +- org.glassfish.hk2:hk2-api:jar:2.5.0-b32:compile [INFO] | | | | +- org.glassfish.hk2:hk2-utils:jar:2.5.0-b32:compile [INFO] | | | | \- org.glassfish.hk2.external:aopalliance-repackaged:jar:2.5.0-b32:compile [INFO] | | | +- org.glassfish.hk2.external:javax.inject:jar:2.5.0-b32:compile [INFO] | | | \- org.glassfish.hk2:hk2-locator:jar:2.5.0-b32:compile [INFO] | | | \- org.javassist:javassist:jar:3.20.0-GA:compile [INFO] | | +- org.glassfish.jersey.ext:jersey-metainf-services:jar:2.25.1:compile [INFO] | | +- org.glassfish.jersey.ext:jersey-bean-validation:jar:2.25.1:compile [INFO] | | | +- javax.el:javax.el-api:jar:2.2.4:compile [INFO] | | | \- org.glassfish.web:javax.el:jar:2.2.4:compile [INFO] | | +- io.dropwizard.metrics:metrics-jersey2:jar:3.2.2:compile [INFO] | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.8.7:compile [INFO] | | | +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.8.7:compile [INFO] | | | \- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.8.7:compile [INFO] | | +- org.glassfish.jersey.containers:jersey-container-servlet:jar:2.25.1:compile [INFO] | | | \- org.glassfish.jersey.containers:jersey-container-servlet-core:jar:2.25.1:compile [INFO] | | +- org.eclipse.jetty:jetty-server:jar:9.4.2.v20170220:compile [INFO] | | | +- javax.servlet:javax.servlet-api:jar:3.1.0:compile [INFO] | | | \- org.eclipse.jetty:jetty-io:jar:9.4.2.v20170220:compile [INFO] | | +- org.eclipse.jetty:jetty-webapp:jar:9.4.2.v20170220:compile [INFO] | | | \- org.eclipse.jetty:jetty-xml:jar:9.4.2.v20170220:compile [INFO] | | \- org.eclipse.jetty:jetty-continuation:jar:9.4.2.v20170220:compile [INFO] | +- io.dropwizard:dropwizard-servlets:jar:1.1.0:compile [INFO] | | \- io.dropwizard.metrics:metrics-annotation:jar:3.2.2:compile [INFO] | +- io.dropwizard:dropwizard-jetty:jar:1.1.0:compile [INFO] | | +- io.dropwizard.metrics:metrics-jetty9:jar:3.2.2:compile [INFO] | | +- org.eclipse.jetty:jetty-servlet:jar:9.4.2.v20170220:compile [INFO] | | | \- org.eclipse.jetty:jetty-security:jar:9.4.2.v20170220:compile [INFO] | | +- org.eclipse.jetty:jetty-servlets:jar:9.4.2.v20170220:compile [INFO] | | \- org.eclipse.jetty:jetty-http:jar:9.4.2.v20170220:compile [INFO] | +- io.dropwizard:dropwizard-lifecycle:jar:1.1.0:compile [INFO] | +- io.dropwizard.metrics:metrics-core:jar:3.2.2:compile [INFO] | +- io.dropwizard.metrics:metrics-jvm:jar:3.2.2:compile [INFO] | +- io.dropwizard.metrics:metrics-servlets:jar:3.2.2:compile [INFO] | | +- io.dropwizard.metrics:metrics-json:jar:3.2.2:compile [INFO] | | \- com.papertrail:profiler:jar:1.0.2:compile [INFO] | +- io.dropwizard.metrics:metrics-healthchecks:jar:3.2.2:compile [INFO] | +- io.dropwizard:dropwizard-request-logging:jar:1.1.0:compile [INFO] | | \- ch.qos.logback:logback-access:jar:1.2.1:compile [INFO] | +- net.sourceforge.argparse4j:argparse4j:jar:0.7.0:compile [INFO] | \- org.eclipse.jetty.toolchain.setuid:jetty-setuid-java:jar:1.0.3:compile [INFO] +- io.federecio:dropwizard-swagger:jar:0.7.0:compile [INFO] | +- io.dropwizard:dropwizard-assets:jar:0.8.0:compile [INFO] | +- io.dropwizard:dropwizard-views:jar:0.8.0:compile [INFO] | +- io.dropwizard:dropwizard-views-freemarker:jar:0.8.0:compile [INFO] | | \- org.freemarker:freemarker:jar:2.3.21:compile [INFO] | +- com.wordnik:swagger-jersey2-jaxrs:jar:1.5.1-M2:compile [INFO] | | \- com.wordnik:swagger-jaxrs:jar:1.5.1-M2:compile [INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-xml:jar:2.4.2:compile [INFO] | | | \- org.codehaus.woodstox:stax2-api:jar:3.1.4:compile [INFO] | | +- com.wordnik:swagger-core:jar:1.5.1-M2:compile [INFO] | | | \- com.wordnik:swagger-models:jar:1.5.1-M2:compile [INFO] | | | \- com.wordnik:swagger-annotations:jar:1.5.1-M2:compile [INFO] | | \- org.reflections:reflections:jar:0.9.9:compile [INFO] | | \- com.google.code.findbugs:annotations:jar:2.0.1:compile [INFO] | \- xml-apis:xml-apis:jar:1.4.01:compile [INFO] +- com.google.inject:guice:jar:4.1.0:compile [INFO] | +- javax.inject:javax.inject:jar:1:compile [INFO] | +- aopalliance:aopalliance:jar:1.0:compile [INFO] | \- com.google.guava:guava:jar:19.0:compile [INFO] +- org.apache.httpcomponents:httpclient:jar:4.5.3:compile [INFO] | +- org.apache.httpcomponents:httpcore:jar:4.4.6:compile [INFO] | +- commons-logging:commons-logging:jar:1.2:compile [INFO] | \- commons-codec:commons-codec:jar:1.9:compile [INFO] +- javax.ws.rs:javax.ws.rs-api:jar:2.0.1:compile [INFO] \- org.junit.jupiter:junit-jupiter-api:jar:5.0.0-M4:test [INFO] +- org.opentest4j:opentest4j:jar:1.0.0-M2:test [INFO] \- org.junit.platform:junit-platform-commons:jar:1.0.0-M4:test扩展MetricRegistry的模块

AbstractModule

并且在将此注入器调用为

的服务类中

bind(MetricRegistry.class).toInstance(environment.metrics());

Answer 1

DW只是创建一个度量标准注册表，没有任何魔法或任何涉及。请参阅Bootstrap类：

public Bootstrap(Application<T> application) {
    this.application = application;
    this.objectMapper = Jackson.newObjectMapper();
    this.bundles = new ArrayList<>();
    this.configuredBundles = new ArrayList<>();
    this.commands = new ArrayList<>();
    this.validatorFactory = Validators.newValidatorFactory();
    this.metricRegistry = new MetricRegistry();
    this.configurationSourceProvider = new FileConfigurationSourceProvider();
    this.classLoader = Thread.currentThread().getContextClassLoader();
    this.configurationFactoryFactory = new DefaultConfigurationFactoryFactory<>();
    this.healthCheckRegistry = new HealthCheckRegistry();
}

特别是：

this.metricRegistry = new MetricRegistry();

这就是它。

忘了，他们还注册了一些标准模块：

/**
     * Registers the JVM metrics to the metric registry and start to report
     * the registry metrics via JMX.
     */
    public void registerMetrics() {
        if (metricsAreRegistered) {
            return;
        }
        getMetricRegistry().register("jvm.attribute", new JvmAttributeGaugeSet());
        getMetricRegistry().register("jvm.buffers", new BufferPoolMetricSet(ManagementFactory
                                                                               .getPlatformMBeanServer()));
        getMetricRegistry().register("jvm.classloader", new ClassLoadingGaugeSet());
        getMetricRegistry().register("jvm.filedescriptor", new FileDescriptorRatioGauge());
        getMetricRegistry().register("jvm.gc", new GarbageCollectorMetricSet());
        getMetricRegistry().register("jvm.memory", new MemoryUsageGaugeSet());
        getMetricRegistry().register("jvm.threads", new ThreadStatesGaugeSet());

        JmxReporter.forRegistry(metricRegistry).build().start();
        metricsAreRegistered = true;
    }

版本不依赖于您正在使用的Metric库版本，而是与使用ObjectMapper注册的MetricsModule进行序列化。在我的例子中，该类看起来像：

public class MetricsModule extends Module {
    static final Version VERSION = new Version(3, 0, 0, "", "com.codahale.metrics", "metrics-json");

在序列化器中，第一行然后执行：

@Override
        public void serialize(MetricRegistry registry,
                              JsonGenerator json,
                              SerializerProvider provider) throws IOException {
            json.writeStartObject();
            json.writeStringField("version", VERSION.toString());

这是您的版本来自的地方。

不可否认，这不是很直观。我认为这更像是一个内部版本控制，每当特定序列化模块中的代码发生变化时它就会更新 - 但你必须向DW人员询问有关详细信息。我的指标是3.1.2或类似的东西，它为我打印3.0.0。

- Artur

Dropwizard默认使用哪些指标 - 核心？

1 个答案: