Eclipse MicroProfile Config API

Since 4.1.2.173

Provided version of the API: MicroProfile Config 1.3

Background

The Config API was created to allow for the modification of application configuration from outside the application without needing the application to be repackaged.

A full overview for the reasoning behind the API can be found in the README for the source code repository.

The complete specification is maintained in the same repository

Config Sources

A ConfigSource is a definition of a source of configuration values that can be used by an application. In addition to the default ConfigSources outlined by the specification, the following are also supported ConfigSources:

Source Ordinal Description

Source	Ordinal	Description
`directory`	90	Reads configuration properties from files in a specified directory. Each file name is the confguration property name and the contents of the file are the config property value. This config source can be used to read Kubernetes secrets files. See below on how to specify the directory to be used for secrets files using asadmin.
`domain`	110	Retrieves and stores config values in the domain.xml as key values. These will then apply to all instances within a domain
`config`	120	Retrieves and stores config values at the level of the named configuration in the domain.xml; `server-config`, for example. MicroProfile Configuration property values will apply to all instances that use the Payara configuration specified.
`server`	130	Retrieves and stores config values at the level of the server in the domain.xml. Property values will only apply on the named server instance
`application`	140	Retrieves and stores config values at the level of the application. Property values will only be available for the specified application on all server instances it is deployed
`module`	150	Retrieves and stores config values at the level of an individual module within an appllication. Property values will only be available for the specified module on all server instances it is deployed
`cluster`	160	Retrieves and stores config values in the Hazelcast cluster as name value pairs. These will be available for all server instances that are members of the cluster.
`jndi`	115	Retrieves and stores config values within the jndi tree. The property name being the dotted name path in the JNDI tree and the value being stored in the JNDI tree. These are modifiable by current admin console functionality.
`password`	105	Retrieves and stores config values in the password alias store. These will be available to all server instances in a domain.

directory

Reads configuration properties from files in a specified directory. Each file name is the confguration property name and the contents of the file are the config property value. This config source can be used to read Kubernetes secrets files. See below on how to specify the directory to be used for secrets files using asadmin.

domain

110

Retrieves and stores config values in the domain.xml as key values. These will then apply to all instances within a domain

config

120

Retrieves and stores config values at the level of the named configuration in the domain.xml; server-config, for example. MicroProfile Configuration property values will apply to all instances that use the Payara configuration specified.

server

130

Retrieves and stores config values at the level of the server in the domain.xml. Property values will only apply on the named server instance

application

140

Retrieves and stores config values at the level of the application. Property values will only be available for the specified application on all server instances it is deployed

module

150

Retrieves and stores config values at the level of an individual module within an appllication. Property values will only be available for the specified module on all server instances it is deployed

cluster

160

Retrieves and stores config values in the Hazelcast cluster as name value pairs. These will be available for all server instances that are members of the cluster.

jndi

115

Retrieves and stores config values within the jndi tree. The property name being the dotted name path in the JNDI tree and the value being stored in the JNDI tree. These are modifiable by current admin console functionality.

password

105

Retrieves and stores config values in the password alias store. These will be available to all server instances in a domain.

Converters

In addition to the standard converters specified by the API, Payara’s implementation includes out-of-the-box converters for URL and InetAddress. These have @Priority of 1, the same as the default converters.

Payara Specific Configuration Properties

In addition to the standard configuration properties, Payara Server and Micro provide a number of out-of-the-box config properties you can use in your application to find information about the Payara runtime environment.

Property Description

Property	Description
`payara.instance.type`	The type of the runtime from `DAS`, `INSTANCE`, `EMBEDDED`, `MICRO`
`payara.instance.name`	The name of the instance e.g. `server`
`payara.instance.root`	The directory which is the root of the instance installation
`payara.domain.name`	The name of the Payara domain
`payara.domain.installroot`	The directory which is the root of the Payara software installation
`payara.config.dir`	The directory in which the server’s configuration files reside
`payara.instance.starttime`	The start time of the server in `System.currentTimeMillis`
`payara.instance.config.name`	The name of the configuration this server is using
`payara.instance.admin.port`	The administration port number of this instance
`payara.instance.admin.host`	The host IP address which the admin listener is listening on
`payara.instance.http.port`	The HTTP port for http-listener
`payara.instance.http.address`	The IP address the http listener is listening on
`payara.instance.http.enabled`	Whether the http listener is enabled
`payara.instance.https.port`	The HTTP port for https-listener
`payara.instance.https.address`	The IP address the https listener is listening on
`payara.instance.https.enabled`	Whether the https listener is enabled

payara.instance.type

The type of the runtime from DAS, INSTANCE, EMBEDDED, MICRO

payara.instance.name

The name of the instance e.g. server

payara.instance.root

The directory which is the root of the instance installation

payara.domain.name

The name of the Payara domain

payara.domain.installroot

The directory which is the root of the Payara software installation

payara.config.dir

The directory in which the server’s configuration files reside

payara.instance.starttime

The start time of the server in System.currentTimeMillis

payara.instance.config.name

The name of the configuration this server is using

payara.instance.admin.port

The administration port number of this instance

payara.instance.admin.host

The host IP address which the admin listener is listening on

payara.instance.http.port

The HTTP port for http-listener

payara.instance.http.address

The IP address the http listener is listening on

payara.instance.http.enabled

Whether the http listener is enabled

payara.instance.https.port

The HTTP port for https-listener

payara.instance.https.address

The IP address the https listener is listening on

payara.instance.https.enabled

Whether the https listener is enabled

Config Ordinal Configuration

Config Ordinal can be configured by using Admin Console or Asadmin commands.

Since 5.183

Using the Admin Console

To configure the Config Ordinal in the Admin Console, go to Configuration → [instance-configuration (like server-config)] → MicroProfile → Config → Ordinal:

Set Config Ordinal

Using Asadmin Commands

A --source value of jndi is not supported for these asadmin commands in 4.1.2.173. The JNDI ConfigSource does exist and is usable from the Config API, though.

`set-config-ordinal`

Usage: asadmin> set-config-ordinal --ordinal=<integer.value> --source=domain|config| server|application|module|cluster
Aim: Provides a way to set the ordinal for a given config source. Where multiple configuration properties exist, the property from a source with a higher ordinal number is preferred.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`ordinal`	The value of the ordinal to set. This must be a number greater than 1. A lower number ordinal means lower order of precedence.	-	yes
`source`	The value of the source to change. Must be one of: `domain`, `config`, `server`, `application`, `module`, `cluster`	-	yes
`target`	The target Payara config to apply the change to	server (the DAS)	no

ordinal

The value of the ordinal to set. This must be a number greater than 1. A lower number ordinal means lower order of precedence.

yes

source

The value of the source to change. Must be one of: domain, config, server, application, module, cluster

yes

target

The target Payara config to apply the change to

server (the DAS)

Example

asadmin> set-config-ordinal --ordinal=600 --source=application

`get-config-ordinal`

Usage: asadmin> get-config-ordinal --source=domain|config|server|application|module|cluster
Aim: Returns the ordinal value for the given ConfigSource type.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`source`	The ConfigSource to get the ordinal for. Must be one of: `domain`, `config`, `server`, `application`, `module`, `cluster`	-	yes

source

The ConfigSource to get the ordinal for. Must be one of: domain, config, server, application, module, cluster

yes

Example

asadmin> get-config-ordinal --source=cluster

Config Property Configuration

Config Property can be configured by using Admin Console or Asadmin commands.

Since 5.183

Using the Admin Console

To configure the Config Property in the Admin Console, go to Configuration → [instance-configuration (like server-config)] → MicroProfile → Config → Property:

Set Config Property

Using Asadmin Commands

`set-config-property`

Usage: asadmin> set-config-property --propertyName=<property.name> --propertyValue= <property.val> --source=domain|config|server|application|module|cluster --sourceName=<source.name> --moduleName=<module.name> --target=<target[default:server]>
Aim: Sets the given property name and value in one of the built-in config sources. The source is specified with --source and, where there is ambiguity, the --sourceName and --moduleName options can be used. For example, where the source is server, the --sourceName can be used to specify the name of the server where the config property is to be stored.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`propertyName`	The name of the configuration property to set	-	yes
`propertyValue`	The value of the configuration property to set	-	yes
`source`	The ConfigSource where the property is to be stored	-	yes
`sourceName`	The name of the ConfigSource when there may be ambiguity, for example a ConfigSource of type `application` must specify the name of the application. This property is required for sources of type: `config`, `server`, `application` or `module`	-	no
`moduleName`	The name of the module when the ConfigSource is of type `module`. When this is specified, the `sourceName` parameter must be provided and must have the name of the application where the module is deployed.	-	no
`target`	The target configuration where the command should be run	server (the DAS)	no

propertyName

The name of the configuration property to set

yes

propertyValue

The value of the configuration property to set

yes

source

The ConfigSource where the property is to be stored

yes

sourceName

The name of the ConfigSource when there may be ambiguity, for example a ConfigSource of type application must specify the name of the application. This property is required for sources of type: config, server, application or module

moduleName

The name of the module when the ConfigSource is of type module. When this is specified, the sourceName parameter must be provided and must have the name of the application where the module is deployed.

target

The target configuration where the command should be run

server (the DAS)

Example

asadmin> set-config-property
    --propertyName=JMSBrokerURL
    --propertyValue=my.jms.hostname
    --source=module
    --sourceName=myApplication
    --moduleName=myModule
    --target=myAppCluster

`delete-config-property`

Usage: asadmin> delete-config-property --propertyName=<property.name> --source=domain| config|server|application|module|cluster --sourceName=<source.name> --moduleName=<module.name> --target=<target[default:server]>
Aim: Deletes the given property name in one of the built-in config sources so that the property no longer exists. The source is specified with --source and, where there is ambiguity, the --sourceName and --moduleName options can be used. For example, where the source is server, the --sourceName can be used to specify the name of the server where the config property is to be stored. moduleName should only be used when the --source=module.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`propertyName`	The name of the configuration property to delete	-	yes
`source`	The ConfigSource where the property is stored	-	yes
`sourceName`	The name of the ConfigSource when there may be ambiguity, for example a ConfigSource of type `application` must specify the name of the application. This property is required for sources of type: `config`, `server`, `application` or `module`	-	no
`moduleName`	The name of the module when the ConfigSource is of type `module`. When this is specified, the `sourceName` parameter must be provided and must have the name of the application where the module is deployed.	-	no
`target`	The target configuration where the command should be run	server (the DAS)	no

propertyName

The name of the configuration property to delete

yes

source

The ConfigSource where the property is stored

yes

sourceName

moduleName

target

The target configuration where the command should be run

server (the DAS)

Example

asadmin> delete-config-property
    --propertyName=JMSBrokerURL
    --source=module
    --sourceName=myApplication
    --moduleName=myModule
    --target=myAppCluster

`get-config-property`

Usage: asadmin> get-config-property --propertyName=<property.name> --source=domain| config|server|application|module|cluster --sourceName=<source.name> --moduleName=<module.name> --target=<target[default:server]>
Aim: Gets the value for the given property name in one of the built-in config sources. The source is specified with --source and, where there is ambiguity, the --sourceName and --moduleName options can be used. For example, where the source is server, the --sourceName can be used to specify the name of the server where the config property is to be stored.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`propertyName`	The name of the configuration property to get	-	yes
`source`	The ConfigSource where the property is stored	-	yes
`sourceName`	The name of the ConfigSource when there may be ambiguity, for example a ConfigSource of type `application` must specify the name of the application. This property is required for sources of type: `config`, `server`, `application` or `module`	-	no
`moduleName`	The name of the module when the ConfigSource is of type `module`. When this is specified, the `sourceName` parameter must be provided and must have the name of the application where the module is deployed.	-	no
`target`	The target configuration where the command should be run	server (the DAS)	no

propertyName

The name of the configuration property to get

yes

source

The ConfigSource where the property is stored

yes

sourceName

moduleName

target

The target configuration where the command should be run

server (the DAS)

Example

asadmin> get-config-property
    --propertyName=JMSBrokerURL
    --source=module
    --sourceName=myApplication
    --moduleName=myModule
    --target=myAppCluster

Config Secrets Directory Configuration

Config Secrets Directory can be configured by using Admin Console or Asadmin commands.

Since 5.183

Using the Admin Console

To configure the Config Secrets Directory in the Admin Console, go to Configuration → [instance-configuration (like server-config)] → MicroProfile → Config → Directory:

Set Config Property

Using Asadmin Commands

`set-config-secrets-dir`

Usage: asadmin> set-config-secrets-dir --directory=<full.path.to.dir> --target=<target[default:server]>
Aim: Sets the directory to be used for the directory config source.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`directory`	Full path to the directory containing configuration files	-	yes
`target`	The target configuration where the command should be run	server (the DAS)	no

directory

Full path to the directory containing configuration files

yes

target

The target configuration where the command should be run

server (the DAS)

Example

asadmin> set-config-secrets-dir
    --directory=/home/payara/.secrets
    --target=myAppCluster

`get-config-secrets-dir`

Usage: asadmin> get-config-secrets-dir --target=<target[default:server]>
Aim: Gets the value of the directory to be used for the directory config source.

Command Options

Option Description Default Mandatory

Option	Description	Default	Mandatory
`target`	The target configuration where the command should be run	server (the DAS)	no

target

The target configuration where the command should be run

server (the DAS)

Example

asadmin> get-config-secrets-dir
    --target=myAppCluster