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12.4. Configuration Tips and Tricks
12.4.1. Defining Default Value for a Property 复制链接链接已复制到粘贴板!
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When you define a property, you can provide a default value for it. To define this default value, append the default value to the property name, separated by a colon (:). For example:
${server.port:8080}
${server.port:8080}
12.4.2. Defining Environment Properties 复制链接链接已复制到粘贴板!
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12.4.2.1. Environment Properties as Component Properties 复制链接链接已复制到粘贴板!
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You can define properties as component properties. This way of defining properties is not dynamic, but you can override each property defined here, by properties defined in a prioritized scope.
12.4.2.2. Environment Properties as Composite Properties 复制链接链接已复制到粘贴板!
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You can define properties as composite properties. This way of defining properties is not dynamic, but you can override every property defined here, by properties defined in a prioritized scope.
12.4.2.3. Environment Properties as Domain Properties 复制链接链接已复制到粘贴板!
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You can define properties as composite properties. This way of defining properties is not dynamic, but you can override each property defined here, by properties defined in a prioritized scope.
You can load properties from OS environment properties. Every environment property is accessible by prefixing it with env. For example, in bash, you can use a property defined as
export MY_PROPERTY=test
, in your SwitchYard application as shown below:
<ftp:binding.sftp> <ftp:host>${env.MY_PROPERTY}</ftp:host> .... </ftp:binding.sftp>
<ftp:binding.sftp>
<ftp:host>${env.MY_PROPERTY}</ftp:host>
....
</ftp:binding.sftp>
Application server has the ability to define properties directly in its configuration either by file or with the console. This configuration is dynamically updated and persisted.
Add the configuration to the server definition as shown below:
This property is used in your SwitchYard application as:
You can pass a properties file as an argument to JBoss Application Server (AS) startup script to load all the properties in the file and make them accessible. You can start the AS as shown below:
$./standalone.sh -P file:///data/production.properties
$./standalone.sh -P file:///data/production.properties
Here are some alternatives:
- -P=<url>: Load system properties from the given URL
- -P<url>: Load system properties from the given URL
- --properties=<url>: Load system properties from the given URL
In your SwitchYard application, you can use these properties as:
12.4.3. Loading Properties for Test 复制链接链接已复制到粘贴板!
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In tests, you can add and resolve properties at the top level. The PropertyMixIn eases working with properties:
In case you need access to the PropertyResolver for tests, where a MixIn is not applicable, you can use TestPropertyResolver.INSTANCE and avoid setting command line parameters as shown below:
TestPropertyResolver.INSTANCE.getMap().put("name","value");
TestPropertyResolver.INSTANCE.getMap().put("name","value");