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2018-06-12 20:59:01 +00:00
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multi/multi_spring-cloud-consul-discovery.html
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@@ -26,7 +26,7 @@
discovery:
healthCheckPath: ${management.server.servlet.context-path}/health
healthCheckInterval: 15s</pre><p>
</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_metadata_and_consul_tags" href="#_metadata_and_consul_tags"></a>3.3.1&nbsp;Metadata and Consul tags</h3></div></div></div><p>Consul does not yet support metadata on services. Spring Cloud&#8217;s <code class="literal">ServiceInstance</code> has a <code class="literal">Map&lt;String, String&gt; metadata</code> field. Spring Cloud Consul uses Consul tags to approximate metadata until Consul officially supports metadata. Tags with the form <code class="literal">key=value</code> will be split and used as a <code class="literal">Map</code> key and value respectively. Tags without the equal <code class="literal">=</code> sign, will be used as both the key and value.</p><p><b>application.yml.&nbsp;</b>
</p><p>You can disable the health check by setting <code class="literal">management.health.consul.enabled=false</code>.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_metadata_and_consul_tags" href="#_metadata_and_consul_tags"></a>3.3.1&nbsp;Metadata and Consul tags</h3></div></div></div><p>Consul does not yet support metadata on services. Spring Cloud&#8217;s <code class="literal">ServiceInstance</code> has a <code class="literal">Map&lt;String, String&gt; metadata</code> field. Spring Cloud Consul uses Consul tags to approximate metadata until Consul officially supports metadata. Tags with the form <code class="literal">key=value</code> will be split and used as a <code class="literal">Map</code> key and value respectively. Tags without the equal <code class="literal">=</code> sign, will be used as both the key and value.</p><p><b>application.yml.&nbsp;</b>
</p><pre class="screen">spring:
cloud:
consul:
@@ -59,4 +59,4 @@ public String serviceUrl() {
return list.get(0).getUri();
}
return null;
}</pre></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_consul_catalog_watch" href="#_consul_catalog_watch"></a>3.5&nbsp;Consul Catalog Watch</h2></div></div></div><p>The Consul Catalog Watch takes advantage of the ability of consul to <a class="link" href="https://www.consul.io/docs/agent/watches.html#services" target="_top">watch services</a>. The Catalog Watch makes a blocking Consul HTTP API call to determine if any services have changed. If there is new service data a Heartbeat Event is published.</p><p>To change the frequency of when the Config Watch is called change <code class="literal">spring.cloud.consul.config.discovery.catalog-services-watch-delay</code>. The default value is 1000, which is in milliseconds. The delay is the amount of time after the end of the previous invocation and the start of the next.</p><p>To disable the Catalog Watch set <code class="literal">spring.cloud.consul.discovery.catalog-services-watch.enabled=false</code>.</p><p>The watch uses a Spring <code class="literal">TaskScheduler</code> to schedule the call to consul. By default it is a <code class="literal">ThreadPoolTaskScheduler</code> with a <code class="literal">poolSize</code> of 1. To change the <code class="literal">TaskScheduler</code>, create a bean of type <code class="literal">TaskScheduler</code> named with the <code class="literal">ConsulDiscoveryClientConfiguration.CATALOG_WATCH_TASK_SCHEDULER_NAME</code> constant.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-consul-agent.html">Prev</a>&nbsp;</td><td width="20%" align="center">&nbsp;</td><td width="40%" align="right">&nbsp;<a accesskey="n" href="multi_spring-cloud-consul-config.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">2.&nbsp;Consul Agent&nbsp;</td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-consul.html">Home</a></td><td width="40%" align="right" valign="top">&nbsp;4.&nbsp;Distributed Configuration with Consul</td></tr></table></div></body></html>
}</pre></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_consul_catalog_watch" href="#_consul_catalog_watch"></a>3.5&nbsp;Consul Catalog Watch</h2></div></div></div><p>The Consul Catalog Watch takes advantage of the ability of consul to <a class="link" href="https://www.consul.io/docs/agent/watches.html#services" target="_top">watch services</a>. The Catalog Watch makes a blocking Consul HTTP API call to determine if any services have changed. If there is new service data a Heartbeat Event is published.</p><p>To change the frequency of when the Config Watch is called change <code class="literal">spring.cloud.consul.config.discovery.catalog-services-watch-delay</code>. The default value is 1000, which is in milliseconds. The delay is the amount of time after the end of the previous invocation and the start of the next.</p><p>To disable the Catalog Watch set <code class="literal">spring.cloud.consul.discovery.catalogServicesWatch.enabled=false</code>.</p><p>The watch uses a Spring <code class="literal">TaskScheduler</code> to schedule the call to consul. By default it is a <code class="literal">ThreadPoolTaskScheduler</code> with a <code class="literal">poolSize</code> of 1. To change the <code class="literal">TaskScheduler</code>, create a bean of type <code class="literal">TaskScheduler</code> named with the <code class="literal">ConsulDiscoveryClientConfiguration.CATALOG_WATCH_TASK_SCHEDULER_NAME</code> constant.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-consul-agent.html">Prev</a>&nbsp;</td><td width="20%" align="center">&nbsp;</td><td width="40%" align="right">&nbsp;<a accesskey="n" href="multi_spring-cloud-consul-config.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">2.&nbsp;Consul Agent&nbsp;</td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-consul.html">Home</a></td><td width="40%" align="right" valign="top">&nbsp;4.&nbsp;Distributed Configuration with Consul</td></tr></table></div></body></html>