org.eclipse.ditto.services.utils.config

Class ConfigUtil

java.lang.Object

org.eclipse.ditto.services.utils.config.ConfigUtil

public final class ConfigUtil
extends Object

Utilities for Typesafe Config.

Field Summary

Fields

Modifier and Type	Field and Description
static String	HOSTING_ENVIRONMENT The hosting environment config key.

Method Summary

Modifier and Type	Method and Description
static com.typesafe.config.Config	determineConfig(String resourceBasename) Determines the Config to use based on the environment we are running in.
static String	getHostNameFromEnv() Returns the host name determined from the environment variable "HOSTNAME".
static String	getLocalHostAddress() Returns the address of the host name which was determined by the env variable "HOSTNAME".
static String	instanceIdentifier() Returns the instance identifier based on the environment the service runs in.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HOSTING_ENVIRONMENT

public static final String HOSTING_ENVIRONMENT

The hosting environment config key.

See Also:

Constant Field Values

Method Detail

determineConfig

public static com.typesafe.config.Config determineConfig(String resourceBasename)

Determines the Config to use based on the environment we are running in. Applies a simple logic:

• When environment variable "" is present - CloudFoundry profile - loading "resourceBasename" Config
• When environment variable "" is set to "" - Docker profile - loading "resourceBasename" Config
• When nothing else is detected - Development profile - loading "resourceBasename" Config

Parameters:

resourceBasename - the resource in the classpath to load config from (e.g. "things").

Returns:

the determined Config.

getHostNameFromEnv

public static String getHostNameFromEnv()

Returns the host name determined from the environment variable "HOSTNAME".

Returns:

the host name

getLocalHostAddress

public static String getLocalHostAddress()

Returns the address of the host name which was determined by the env variable "HOSTNAME".

Returns:

the host address

instanceIdentifier

public static String instanceIdentifier()

Returns the instance identifier based on the environment the service runs in. E.g.:

• for Docker Swarm environment the suffix would be the Swarm Instance Index (starting from "1")
• as fallback the "HOSTNAME" environment variable is used

Returns:

the instance identifier