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Devices Tracking System - Service Discovery

The Service Discovery allows all microservices composing the application to register dynamically in a global repository and to find another instances on demand.

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Prerequisites

You need to have the following tools installed and configured:

  • Java SE 1.8+
  • Maven 3.0+

Installation and Commissioning

In order to run the service discovery, follow these steps:

  1. Run the Configuration Server.
  2. Clone the latest production version of this repository from the master branch.
  3. Navigate to the cloned repository and install all dependencies by typing:
mvn install
  1. Run the built *.jar file passing the location of configuration files by typing:
java -jar target/service-discovery-1.0-SNAPSHOT.jar --spring.config.location=classpath:pl/edu/agh/iet/dts/discovery/

Building the Docker image

When the *.jar file is successfully built, a Docker image for the production environment may be created by applying following steps:

  1. Enter the root directory of this repository.
  2. Build the Docker image by typing:
docker build . -t service-discovery
  1. In order to run the image, type:
docker run -p 8080:8080 -p 44341:44321 -p 44343:44323 -e CONFIGURATION_SERVER_IP=[CONFIGURATION SERVER HOST IP ADDRESS] -e EUREKA_IP=[EUREKA HOST IP ADDRESS] -t service-discovery

Please note that this docker container uses the Performance Co-Pilot (PCP) tool to gather data for system monitoring metrics. These values are accessed via the 44341 and 44343 ports. In order to visualize performance of this microservice, please enter the [CONTAINER IP ADDRESS]:44343 value in the Hostname field placed in the Netflix Vector dashboard.

Testing

In order to test the application locally, run the built *.jar file by typing:

java -jar target/service-discovery-1.0-SNAPSHOT.jar --spring.profiles.active=test --spring.config.location=classpath:pl/edu/agh/iet/dts/discovery/

and then execute specific tests.

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An Eureka-based global repository providing the possiblity of registering and finding service instances.

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