Sync docs from master to gh-pages

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2018-05-22 17:00:32 +00:00
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commit 4b071db75c
3 changed files with 12 additions and 15 deletions

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@@ -117,9 +117,9 @@ You can disable it by setting <code class="literal">spring.sleuth.feign.processo
If you set it to <code class="literal">false</code>, Spring Cloud Sleuth does not instrument any of your custom Feign components.
However, all the default instrumentation is still there.</p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_asynchronous_communication" href="#_asynchronous_communication"></a>15.8&nbsp;Asynchronous Communication</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="__literal_async_literal_annotated_methods" href="#__literal_async_literal_annotated_methods"></a>15.8.1&nbsp;<code class="literal">@Async</code> Annotated methods</h3></div></div></div><p>In Spring Cloud Sleuth, we instrument async-related components so that the tracing information is passed between threads.
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.async.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Async</code>, we automatically create a new Span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">If the method is annotated with <code class="literal">@SpanName</code>, the value of the annotation is the Span&#8217;s name.</li><li class="listitem">If the method is not annotated with <code class="literal">@SpanName</code>, the Span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="__literal_scheduled_literal_annotated_methods" href="#__literal_scheduled_literal_annotated_methods"></a>15.8.2&nbsp;<code class="literal">@Scheduled</code> Annotated Methods</h3></div></div></div><p>In Spring Cloud Sleuth, we instrument scheduled method execution so that the tracing information is passed between threads.
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.scheduled.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Scheduled</code>, we automatically create a new span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">The span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div><p>If you want to skip span creation for some <code class="literal">@Scheduled</code> annotated classes, you can set the <code class="literal">spring.sleuth.scheduled.skipPattern</code> with a regular expression that matches the fully qualified name of the <code class="literal">@Scheduled</code> annotated class.</p><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Tip"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="images/tip.png"></td><th align="left">Tip</th></tr><tr><td align="left" valign="top"><p>If you use <code class="literal">spring-cloud-sleuth-stream</code> and <code class="literal">spring-cloud-netflix-hystrix-stream</code> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying.
You can prevent it by setting <code class="literal">spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</code>.</p></td></tr></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_executor_executorservice_and_scheduledexecutorservice" href="#_executor_executorservice_and_scheduledexecutorservice"></a>15.8.3&nbsp;Executor, ExecutorService, and ScheduledExecutorService</h3></div></div></div><p>We provide <code class="literal">LazyTraceExecutor</code>, <code class="literal">TraceableExecutorService</code>, and <code class="literal">TraceableScheduledExecutorService</code>. Those implementations create spans each time a new task is submitted, invoked, or scheduled.</p><p>The following example shows how to pass tracing information with <code class="literal">TraceableExecutorService</code> when working with <code class="literal">CompletableFuture</code>:</p><pre class="programlisting">CompletableFuture&lt;Long&gt; completableFuture = CompletableFuture.supplyAsync(() -&gt; {
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.scheduled.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Scheduled</code>, we automatically create a new span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">The span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div><p>If you want to skip span creation for some <code class="literal">@Scheduled</code> annotated classes, you can set the <code class="literal">spring.sleuth.scheduled.skipPattern</code> with a regular expression that matches the fully qualified name of the <code class="literal">@Scheduled</code> annotated class.
If you use <code class="literal">spring-cloud-sleuth-stream</code> and <code class="literal">spring-cloud-netflix-hystrix-stream</code> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying. That&#8217;s why, by default, <code class="literal">spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_executor_executorservice_and_scheduledexecutorservice" href="#_executor_executorservice_and_scheduledexecutorservice"></a>15.8.3&nbsp;Executor, ExecutorService, and ScheduledExecutorService</h3></div></div></div><p>We provide <code class="literal">LazyTraceExecutor</code>, <code class="literal">TraceableExecutorService</code>, and <code class="literal">TraceableScheduledExecutorService</code>. Those implementations create spans each time a new task is submitted, invoked, or scheduled.</p><p>The following example shows how to pass tracing information with <code class="literal">TraceableExecutorService</code> when working with <code class="literal">CompletableFuture</code>:</p><pre class="programlisting">CompletableFuture&lt;Long&gt; completableFuture = CompletableFuture.supplyAsync(() -&gt; {
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-comment">// perform some logic</span>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> <span class="hl-number">1</span>_<span class="hl-number">000</span>_<span class="hl-number">000L</span>;
}, <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">new</span> TraceableExecutorService(beanFactory, executorService,
@@ -147,7 +147,7 @@ The following example shows how to set up such a custom <code class="literal">Ex
}</pre></div></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_messaging" href="#_messaging"></a>15.9&nbsp;Messaging</h2></div></div></div><p>Features from this section can be disabled by setting the <code class="literal">spring.sleuth.messaging.enabled</code> property with value equal to <code class="literal">false</code>.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_integration_and_spring_cloud_stream" href="#_spring_integration_and_spring_cloud_stream"></a>15.9.1&nbsp;Spring Integration and Spring Cloud Stream</h3></div></div></div><p>Spring Cloud Sleuth integrates with <a class="link" href="http://projects.spring.io/spring-integration/" target="_top">Spring Integration</a>.
It creates spans for publish and subscribe events.
To disable Spring Integration instrumentation, set <code class="literal">spring.sleuth.integration.enabled</code> to <code class="literal">false</code>.</p><p>You can provide the <code class="literal">spring.sleuth.integration.patterns</code> pattern to explicitly provide the names of channels that you want to include for tracing.
By default, all channels are included.</p><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left">Important</th></tr><tr><td align="left" valign="top"><p>When using the <code class="literal">Executor</code> to build a Spring Integration <code class="literal">IntegrationFlow</code>, you must use the untraced version of the <code class="literal">Executor</code>.
By default, all channels but <code class="literal">hystrixStreamOutput</code> channel are included.</p><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left">Important</th></tr><tr><td align="left" valign="top"><p>When using the <code class="literal">Executor</code> to build a Spring Integration <code class="literal">IntegrationFlow</code>, you must use the untraced version of the <code class="literal">Executor</code>.
Decorating the Spring Integration Executor Channel with <code class="literal">TraceableExecutorService</code> causes the spans to be improperly closed.</p></td></tr></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_rabbitmq" href="#_spring_rabbitmq"></a>15.9.2&nbsp;Spring RabbitMq</h3></div></div></div><p>We instrument the <code class="literal">RabbitTemplate</code> so that tracing headers get injected
into the message.</p><p>To block this feature, set <code class="literal">spring.sleuth.messaging.rabbit.enabled</code> to <code class="literal">false</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_kafka" href="#_spring_kafka"></a>15.9.3&nbsp;Spring Kafka</h3></div></div></div><p>We instrument the Spring Kafka&#8217;s <code class="literal">ProducerFactory</code> and <code class="literal">ConsumerFactory</code>
so that tracing headers get injected into the created Spring Kafka&#8217;s

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@@ -808,9 +808,9 @@ You can disable it by setting <code class="literal">spring.sleuth.feign.processo
If you set it to <code class="literal">false</code>, Spring Cloud Sleuth does not instrument any of your custom Feign components.
However, all the default instrumentation is still there.</p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_asynchronous_communication" href="#_asynchronous_communication"></a>15.8&nbsp;Asynchronous Communication</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="__literal_async_literal_annotated_methods" href="#__literal_async_literal_annotated_methods"></a>15.8.1&nbsp;<code class="literal">@Async</code> Annotated methods</h3></div></div></div><p>In Spring Cloud Sleuth, we instrument async-related components so that the tracing information is passed between threads.
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.async.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Async</code>, we automatically create a new Span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">If the method is annotated with <code class="literal">@SpanName</code>, the value of the annotation is the Span&#8217;s name.</li><li class="listitem">If the method is not annotated with <code class="literal">@SpanName</code>, the Span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="__literal_scheduled_literal_annotated_methods" href="#__literal_scheduled_literal_annotated_methods"></a>15.8.2&nbsp;<code class="literal">@Scheduled</code> Annotated Methods</h3></div></div></div><p>In Spring Cloud Sleuth, we instrument scheduled method execution so that the tracing information is passed between threads.
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.scheduled.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Scheduled</code>, we automatically create a new span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">The span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div><p>If you want to skip span creation for some <code class="literal">@Scheduled</code> annotated classes, you can set the <code class="literal">spring.sleuth.scheduled.skipPattern</code> with a regular expression that matches the fully qualified name of the <code class="literal">@Scheduled</code> annotated class.</p><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Tip"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="images/tip.png"></td><th align="left">Tip</th></tr><tr><td align="left" valign="top"><p>If you use <code class="literal">spring-cloud-sleuth-stream</code> and <code class="literal">spring-cloud-netflix-hystrix-stream</code> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying.
You can prevent it by setting <code class="literal">spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</code>.</p></td></tr></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_executor_executorservice_and_scheduledexecutorservice" href="#_executor_executorservice_and_scheduledexecutorservice"></a>15.8.3&nbsp;Executor, ExecutorService, and ScheduledExecutorService</h3></div></div></div><p>We provide <code class="literal">LazyTraceExecutor</code>, <code class="literal">TraceableExecutorService</code>, and <code class="literal">TraceableScheduledExecutorService</code>. Those implementations create spans each time a new task is submitted, invoked, or scheduled.</p><p>The following example shows how to pass tracing information with <code class="literal">TraceableExecutorService</code> when working with <code class="literal">CompletableFuture</code>:</p><pre class="programlisting">CompletableFuture&lt;Long&gt; completableFuture = CompletableFuture.supplyAsync(() -&gt; {
You can disable this behavior by setting the value of <code class="literal">spring.sleuth.scheduled.enabled</code> to <code class="literal">false</code>.</p><p>If you annotate your method with <code class="literal">@Scheduled</code>, we automatically create a new span with the following characteristics:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">The span name is the annotated method name.</li><li class="listitem">The span is tagged with the method&#8217;s class name and method name.</li></ul></div><p>If you want to skip span creation for some <code class="literal">@Scheduled</code> annotated classes, you can set the <code class="literal">spring.sleuth.scheduled.skipPattern</code> with a regular expression that matches the fully qualified name of the <code class="literal">@Scheduled</code> annotated class.
If you use <code class="literal">spring-cloud-sleuth-stream</code> and <code class="literal">spring-cloud-netflix-hystrix-stream</code> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying. That&#8217;s why, by default, <code class="literal">spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_executor_executorservice_and_scheduledexecutorservice" href="#_executor_executorservice_and_scheduledexecutorservice"></a>15.8.3&nbsp;Executor, ExecutorService, and ScheduledExecutorService</h3></div></div></div><p>We provide <code class="literal">LazyTraceExecutor</code>, <code class="literal">TraceableExecutorService</code>, and <code class="literal">TraceableScheduledExecutorService</code>. Those implementations create spans each time a new task is submitted, invoked, or scheduled.</p><p>The following example shows how to pass tracing information with <code class="literal">TraceableExecutorService</code> when working with <code class="literal">CompletableFuture</code>:</p><pre class="programlisting">CompletableFuture&lt;Long&gt; completableFuture = CompletableFuture.supplyAsync(() -&gt; {
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-comment">// perform some logic</span>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> <span class="hl-number">1</span>_<span class="hl-number">000</span>_<span class="hl-number">000L</span>;
}, <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">new</span> TraceableExecutorService(beanFactory, executorService,
@@ -838,7 +838,7 @@ The following example shows how to set up such a custom <code class="literal">Ex
}</pre></div></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_messaging" href="#_messaging"></a>15.9&nbsp;Messaging</h2></div></div></div><p>Features from this section can be disabled by setting the <code class="literal">spring.sleuth.messaging.enabled</code> property with value equal to <code class="literal">false</code>.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_integration_and_spring_cloud_stream" href="#_spring_integration_and_spring_cloud_stream"></a>15.9.1&nbsp;Spring Integration and Spring Cloud Stream</h3></div></div></div><p>Spring Cloud Sleuth integrates with <a class="link" href="http://projects.spring.io/spring-integration/" target="_top">Spring Integration</a>.
It creates spans for publish and subscribe events.
To disable Spring Integration instrumentation, set <code class="literal">spring.sleuth.integration.enabled</code> to <code class="literal">false</code>.</p><p>You can provide the <code class="literal">spring.sleuth.integration.patterns</code> pattern to explicitly provide the names of channels that you want to include for tracing.
By default, all channels are included.</p><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left">Important</th></tr><tr><td align="left" valign="top"><p>When using the <code class="literal">Executor</code> to build a Spring Integration <code class="literal">IntegrationFlow</code>, you must use the untraced version of the <code class="literal">Executor</code>.
By default, all channels but <code class="literal">hystrixStreamOutput</code> channel are included.</p><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left">Important</th></tr><tr><td align="left" valign="top"><p>When using the <code class="literal">Executor</code> to build a Spring Integration <code class="literal">IntegrationFlow</code>, you must use the untraced version of the <code class="literal">Executor</code>.
Decorating the Spring Integration Executor Channel with <code class="literal">TraceableExecutorService</code> causes the spans to be improperly closed.</p></td></tr></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_rabbitmq" href="#_spring_rabbitmq"></a>15.9.2&nbsp;Spring RabbitMq</h3></div></div></div><p>We instrument the <code class="literal">RabbitTemplate</code> so that tracing headers get injected
into the message.</p><p>To block this feature, set <code class="literal">spring.sleuth.messaging.rabbit.enabled</code> to <code class="literal">false</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_spring_kafka" href="#_spring_kafka"></a>15.9.3&nbsp;Spring Kafka</h3></div></div></div><p>We instrument the Spring Kafka&#8217;s <code class="literal">ProducerFactory</code> and <code class="literal">ConsumerFactory</code>
so that tracing headers get injected into the created Spring Kafka&#8217;s

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@@ -1804,12 +1804,9 @@ You can disable this behavior by setting the value of <literal>spring.sleuth.sch
<simpara>The span is tagged with the method&#8217;s class name and method name.</simpara>
</listitem>
</itemizedlist>
<simpara>If you want to skip span creation for some <literal>@Scheduled</literal> annotated classes, you can set the <literal>spring.sleuth.scheduled.skipPattern</literal> with a regular expression that matches the fully qualified name of the <literal>@Scheduled</literal> annotated class.</simpara>
<tip>
<simpara>If you use <literal>spring-cloud-sleuth-stream</literal> and <literal>spring-cloud-netflix-hystrix-stream</literal> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying.
You can prevent it by setting <literal>spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</literal>.</simpara>
</tip>
<simpara>If you want to skip span creation for some <literal>@Scheduled</literal> annotated classes, you can set the <literal>spring.sleuth.scheduled.skipPattern</literal> with a regular expression that matches the fully qualified name of the <literal>@Scheduled</literal> annotated class.
If you use <literal>spring-cloud-sleuth-stream</literal> and <literal>spring-cloud-netflix-hystrix-stream</literal> together, a span is created for each Hystrix metrics and sent to Zipkin.
This behavior may be annoying. That&#8217;s why, by default, <literal>spring.sleuth.scheduled.skipPattern=org.springframework.cloud.netflix.hystrix.stream.HystrixStreamTask</literal>.</simpara>
</section>
<section xml:id="_executor_executorservice_and_scheduledexecutorservice">
<title>Executor, ExecutorService, and ScheduledExecutorService</title>
@@ -1860,7 +1857,7 @@ static class CustomExecutorConfig extends AsyncConfigurerSupport {
It creates spans for publish and subscribe events.
To disable Spring Integration instrumentation, set <literal>spring.sleuth.integration.enabled</literal> to <literal>false</literal>.</simpara>
<simpara>You can provide the <literal>spring.sleuth.integration.patterns</literal> pattern to explicitly provide the names of channels that you want to include for tracing.
By default, all channels are included.</simpara>
By default, all channels but <literal>hystrixStreamOutput</literal> channel are included.</simpara>
<important>
<simpara>When using the <literal>Executor</literal> to build a Spring Integration <literal>IntegrationFlow</literal>, you must use the untraced version of the <literal>Executor</literal>.
Decorating the Spring Integration Executor Channel with <literal>TraceableExecutorService</literal> causes the spans to be improperly closed.</simpara>