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multi/multi__spring_cloud_commons_common_abstractions.html
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@@ -10,7 +10,15 @@ To disable the composite <code class="literal">HealthIndicator</code>, set <code
A generic <code class="literal">HealthIndicator</code> based on <code class="literal">DiscoveryClient</code> is auto-configured (<code class="literal">DiscoveryClientHealthIndicator</code>).
To disable it, set <code class="literal">spring.cloud.discovery.client.health-indicator.enabled=false</code>.
To disable the description field of the <code class="literal">DiscoveryClientHealthIndicator</code>, set <code class="literal">spring.cloud.discovery.client.health-indicator.include-description=false</code>.
Otherwise, it can bubble up as the <code class="literal">description</code> of the rolled up <code class="literal">HealthIndicator</code>.</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_serviceregistry" href="#_serviceregistry"></a>2.2&nbsp;ServiceRegistry</h2></div></div></div><p>Commons now provides a <code class="literal">ServiceRegistry</code> interface that provides methods such as <code class="literal">register(Registration)</code> and <code class="literal">deregister(Registration)</code>, which let you provide custom registered services.
Otherwise, it can bubble up as the <code class="literal">description</code> of the rolled up <code class="literal">HealthIndicator</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_ordering_literal_discoveryclient_literal_instances" href="#_ordering_literal_discoveryclient_literal_instances"></a>2.1.2&nbsp;Ordering <code class="literal">DiscoveryClient</code> instances</h3></div></div></div><p><code class="literal">DiscoveryClient</code> interface extends <code class="literal">Ordered</code>. This is useful when using multiple discovery
clients, as it allows you to define the order of the returned discovery clients, similar to
how you can order the beans loaded by a Spring application. By default, the order of any <code class="literal">DiscoveryClient</code> is set to
<code class="literal">0</code>. If you want to set a different order for your custom <code class="literal">DiscoveryClient</code> implementations, you just need to override
the <code class="literal">getOrder()</code> method so that it returns the value that is suitable for your setup. Apart from this, you can use
properties to set the order of the <code class="literal">DiscoveryClient</code>
implementations provided by Spring Cloud, among others <code class="literal">ConsulDiscoveryClient</code>, <code class="literal">EurekaDiscoveryClient</code> and
<code class="literal">ZookeeperDiscoveryClient</code>. In order to do it, you just need to set the
<code class="literal">spring.cloud.{clientIdentifier}.discovery.order</code> (or <code class="literal">eureka.client.order</code> for Eureka) property to the desired value.</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_serviceregistry" href="#_serviceregistry"></a>2.2&nbsp;ServiceRegistry</h2></div></div></div><p>Commons now provides a <code class="literal">ServiceRegistry</code> interface that provides methods such as <code class="literal">register(Registration)</code> and <code class="literal">deregister(Registration)</code>, which let you provide custom registered services.
<code class="literal">Registration</code> is a marker interface.</p><p>The following example shows the <code class="literal">ServiceRegistry</code> in use:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@Configuration</span></em>
<em><span class="hl-annotation" style="color: gray">@EnableDiscoveryClient(autoRegister=false)</span></em>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> MyConfiguration {

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<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Cloud Native Applications</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Cloud Native Applications</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="#d0e9"></a></span></dt><dt><span class="chapter"><a href="#_spring_cloud_context_application_context_services">1. Spring Cloud Context: Application Context Services</a></span></dt><dd><dl><dt><span class="section"><a href="#_the_bootstrap_application_context">1.1. The Bootstrap Application Context</a></span></dt><dt><span class="section"><a href="#_application_context_hierarchies">1.2. Application Context Hierarchies</a></span></dt><dt><span class="section"><a href="#customizing-bootstrap-properties">1.3. Changing the Location of Bootstrap Properties</a></span></dt><dt><span class="section"><a href="#overriding-bootstrap-properties">1.4. Overriding the Values of Remote Properties</a></span></dt><dt><span class="section"><a href="#_customizing_the_bootstrap_configuration">1.5. Customizing the Bootstrap Configuration</a></span></dt><dt><span class="section"><a href="#customizing-bootstrap-property-sources">1.6. Customizing the Bootstrap Property Sources</a></span></dt><dt><span class="section"><a href="#_logging_configuration">1.7. Logging Configuration</a></span></dt><dt><span class="section"><a href="#_environment_changes">1.8. Environment Changes</a></span></dt><dt><span class="section"><a href="#refresh-scope">1.9. Refresh Scope</a></span></dt><dt><span class="section"><a href="#_encryption_and_decryption">1.10. Encryption and Decryption</a></span></dt><dt><span class="section"><a href="#_endpoints">1.11. Endpoints</a></span></dt></dl></dd><dt><span class="chapter"><a href="#_spring_cloud_commons_common_abstractions">2. Spring Cloud Commons: Common Abstractions</a></span></dt><dd><dl><dt><span class="section"><a href="#__enablediscoveryclient">2.1. @EnableDiscoveryClient</a></span></dt><dd><dl><dt><span class="section"><a href="#_health_indicator">2.1.1. Health Indicator</a></span></dt></dl></dd><dt><span class="section"><a href="#_serviceregistry">2.2. ServiceRegistry</a></span></dt><dd><dl><dt><span class="section"><a href="#_serviceregistry_auto_registration">2.2.1. ServiceRegistry Auto-Registration</a></span></dt><dt><span class="section"><a href="#_service_registry_actuator_endpoint">2.2.2. Service Registry Actuator Endpoint</a></span></dt></dl></dd><dt><span class="section"><a href="#_spring_resttemplate_as_a_load_balancer_client">2.3. Spring RestTemplate as a Load Balancer Client</a></span></dt><dt><span class="section"><a href="#_spring_webclient_as_a_load_balancer_client">2.4. Spring WebClient as a Load Balancer Client</a></span></dt><dd><dl><dt><span class="section"><a href="#_retrying_failed_requests">2.4.1. Retrying Failed Requests</a></span></dt></dl></dd><dt><span class="section"><a href="#_multiple_resttemplate_objects">2.5. Multiple RestTemplate objects</a></span></dt><dt><span class="section"><a href="#loadbalanced-webclient">2.6. Spring WebFlux WebClient as a Load Balancer Client</a></span></dt><dt><span class="section"><a href="#ignore-network-interfaces">2.7. Ignore Network Interfaces</a></span></dt><dt><span class="section"><a href="#http-clients">2.8. HTTP Client Factories</a></span></dt><dt><span class="section"><a href="#enabled-features">2.9. Enabled Features</a></span></dt><dd><dl><dt><span class="section"><a href="#_feature_types">2.9.1. Feature types</a></span></dt><dt><span class="section"><a href="#_declaring_features">2.9.2. Declaring features</a></span></dt></dl></dd></dl></dd></dl></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><a class="link" href="http://pivotal.io/platform-as-a-service/migrating-to-cloud-native-application-architectures-ebook" target="_top">Cloud Native</a> is a style of application development that encourages easy adoption of best practices in the areas of continuous delivery and value-driven development.
<title>Cloud Native Applications</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Cloud Native Applications</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="#d0e9"></a></span></dt><dt><span class="chapter"><a href="#_spring_cloud_context_application_context_services">1. Spring Cloud Context: Application Context Services</a></span></dt><dd><dl><dt><span class="section"><a href="#_the_bootstrap_application_context">1.1. The Bootstrap Application Context</a></span></dt><dt><span class="section"><a href="#_application_context_hierarchies">1.2. Application Context Hierarchies</a></span></dt><dt><span class="section"><a href="#customizing-bootstrap-properties">1.3. Changing the Location of Bootstrap Properties</a></span></dt><dt><span class="section"><a href="#overriding-bootstrap-properties">1.4. Overriding the Values of Remote Properties</a></span></dt><dt><span class="section"><a href="#_customizing_the_bootstrap_configuration">1.5. Customizing the Bootstrap Configuration</a></span></dt><dt><span class="section"><a href="#customizing-bootstrap-property-sources">1.6. Customizing the Bootstrap Property Sources</a></span></dt><dt><span class="section"><a href="#_logging_configuration">1.7. Logging Configuration</a></span></dt><dt><span class="section"><a href="#_environment_changes">1.8. Environment Changes</a></span></dt><dt><span class="section"><a href="#refresh-scope">1.9. Refresh Scope</a></span></dt><dt><span class="section"><a href="#_encryption_and_decryption">1.10. Encryption and Decryption</a></span></dt><dt><span class="section"><a href="#_endpoints">1.11. Endpoints</a></span></dt></dl></dd><dt><span class="chapter"><a href="#_spring_cloud_commons_common_abstractions">2. Spring Cloud Commons: Common Abstractions</a></span></dt><dd><dl><dt><span class="section"><a href="#__enablediscoveryclient">2.1. @EnableDiscoveryClient</a></span></dt><dd><dl><dt><span class="section"><a href="#_health_indicator">2.1.1. Health Indicator</a></span></dt><dt><span class="section"><a href="#_ordering_literal_discoveryclient_literal_instances">2.1.2. Ordering <code class="literal">DiscoveryClient</code> instances</a></span></dt></dl></dd><dt><span class="section"><a href="#_serviceregistry">2.2. ServiceRegistry</a></span></dt><dd><dl><dt><span class="section"><a href="#_serviceregistry_auto_registration">2.2.1. ServiceRegistry Auto-Registration</a></span></dt><dt><span class="section"><a href="#_service_registry_actuator_endpoint">2.2.2. Service Registry Actuator Endpoint</a></span></dt></dl></dd><dt><span class="section"><a href="#_spring_resttemplate_as_a_load_balancer_client">2.3. Spring RestTemplate as a Load Balancer Client</a></span></dt><dt><span class="section"><a href="#_spring_webclient_as_a_load_balancer_client">2.4. Spring WebClient as a Load Balancer Client</a></span></dt><dd><dl><dt><span class="section"><a href="#_retrying_failed_requests">2.4.1. Retrying Failed Requests</a></span></dt></dl></dd><dt><span class="section"><a href="#_multiple_resttemplate_objects">2.5. Multiple RestTemplate objects</a></span></dt><dt><span class="section"><a href="#loadbalanced-webclient">2.6. Spring WebFlux WebClient as a Load Balancer Client</a></span></dt><dt><span class="section"><a href="#ignore-network-interfaces">2.7. Ignore Network Interfaces</a></span></dt><dt><span class="section"><a href="#http-clients">2.8. HTTP Client Factories</a></span></dt><dt><span class="section"><a href="#enabled-features">2.9. Enabled Features</a></span></dt><dd><dl><dt><span class="section"><a href="#_feature_types">2.9.1. Feature types</a></span></dt><dt><span class="section"><a href="#_declaring_features">2.9.2. Declaring features</a></span></dt></dl></dd></dl></dd></dl></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><a class="link" href="http://pivotal.io/platform-as-a-service/migrating-to-cloud-native-application-architectures-ebook" target="_top">Cloud Native</a> is a style of application development that encourages easy adoption of best practices in the areas of continuous delivery and value-driven development.
A related discipline is that of building <a class="link" href="http://12factor.net/" target="_top">12-factor Applications</a>, in which development practices are aligned with delivery and operations goals&#8201;&#8212;&#8201;for instance, by using declarative programming and management and monitoring.
Spring Cloud facilitates these styles of development in a number of specific ways.
The starting point is a set of features to which all components in a distributed system need easy access.</p><p>Many of those features are covered by <a class="link" href="http://projects.spring.io/spring-boot" target="_top">Spring Boot</a>, on which Spring Cloud builds. Some more features are delivered by Spring Cloud as two libraries: Spring Cloud Context and Spring Cloud Commons.
@@ -105,7 +105,15 @@ To disable the composite <code class="literal">HealthIndicator</code>, set <code
A generic <code class="literal">HealthIndicator</code> based on <code class="literal">DiscoveryClient</code> is auto-configured (<code class="literal">DiscoveryClientHealthIndicator</code>).
To disable it, set <code class="literal">spring.cloud.discovery.client.health-indicator.enabled=false</code>.
To disable the description field of the <code class="literal">DiscoveryClientHealthIndicator</code>, set <code class="literal">spring.cloud.discovery.client.health-indicator.include-description=false</code>.
Otherwise, it can bubble up as the <code class="literal">description</code> of the rolled up <code class="literal">HealthIndicator</code>.</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_serviceregistry" href="#_serviceregistry"></a>2.2&nbsp;ServiceRegistry</h2></div></div></div><p>Commons now provides a <code class="literal">ServiceRegistry</code> interface that provides methods such as <code class="literal">register(Registration)</code> and <code class="literal">deregister(Registration)</code>, which let you provide custom registered services.
Otherwise, it can bubble up as the <code class="literal">description</code> of the rolled up <code class="literal">HealthIndicator</code>.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_ordering_literal_discoveryclient_literal_instances" href="#_ordering_literal_discoveryclient_literal_instances"></a>2.1.2&nbsp;Ordering <code class="literal">DiscoveryClient</code> instances</h3></div></div></div><p><code class="literal">DiscoveryClient</code> interface extends <code class="literal">Ordered</code>. This is useful when using multiple discovery
clients, as it allows you to define the order of the returned discovery clients, similar to
how you can order the beans loaded by a Spring application. By default, the order of any <code class="literal">DiscoveryClient</code> is set to
<code class="literal">0</code>. If you want to set a different order for your custom <code class="literal">DiscoveryClient</code> implementations, you just need to override
the <code class="literal">getOrder()</code> method so that it returns the value that is suitable for your setup. Apart from this, you can use
properties to set the order of the <code class="literal">DiscoveryClient</code>
implementations provided by Spring Cloud, among others <code class="literal">ConsulDiscoveryClient</code>, <code class="literal">EurekaDiscoveryClient</code> and
<code class="literal">ZookeeperDiscoveryClient</code>. In order to do it, you just need to set the
<code class="literal">spring.cloud.{clientIdentifier}.discovery.order</code> (or <code class="literal">eureka.client.order</code> for Eureka) property to the desired value.</p></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_serviceregistry" href="#_serviceregistry"></a>2.2&nbsp;ServiceRegistry</h2></div></div></div><p>Commons now provides a <code class="literal">ServiceRegistry</code> interface that provides methods such as <code class="literal">register(Registration)</code> and <code class="literal">deregister(Registration)</code>, which let you provide custom registered services.
<code class="literal">Registration</code> is a marker interface.</p><p>The following example shows the <code class="literal">ServiceRegistry</code> in use:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@Configuration</span></em>
<em><span class="hl-annotation" style="color: gray">@EnableDiscoveryClient(autoRegister=false)</span></em>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> MyConfiguration {

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spring-cloud-commons.xml
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@@ -280,6 +280,18 @@ To disable it, set <literal>spring.cloud.discovery.client.health-indicator.enabl
To disable the description field of the <literal>DiscoveryClientHealthIndicator</literal>, set <literal>spring.cloud.discovery.client.health-indicator.include-description=false</literal>.
Otherwise, it can bubble up as the <literal>description</literal> of the rolled up <literal>HealthIndicator</literal>.</simpara>
</section>
<section xml:id="_ordering_literal_discoveryclient_literal_instances">
<title>Ordering <literal>DiscoveryClient</literal> instances</title>
<simpara><literal>DiscoveryClient</literal> interface extends <literal>Ordered</literal>. This is useful when using multiple discovery
clients, as it allows you to define the order of the returned discovery clients, similar to
how you can order the beans loaded by a Spring application. By default, the order of any <literal>DiscoveryClient</literal> is set to
<literal>0</literal>. If you want to set a different order for your custom <literal>DiscoveryClient</literal> implementations, you just need to override
the <literal>getOrder()</literal> method so that it returns the value that is suitable for your setup. Apart from this, you can use
properties to set the order of the <literal>DiscoveryClient</literal>
implementations provided by Spring Cloud, among others <literal>ConsulDiscoveryClient</literal>, <literal>EurekaDiscoveryClient</literal> and
<literal>ZookeeperDiscoveryClient</literal>. In order to do it, you just need to set the
<literal>spring.cloud.{clientIdentifier}.discovery.order</literal> (or <literal>eureka.client.order</literal> for Eureka) property to the desired value.</simpara>
</section>
</section>
<section xml:id="_serviceregistry">
<title>ServiceRegistry</title>