This is the administrative guide to Cepheus-CEP.
Requirements
- JAVA 8
- Maven 2 (for building only)
Building from source
Get the code from the Github:
git clone https://github.com/Orange-OpenSource/fiware-cepheus.git
cd fiware-cepheus/cepheus-cep
To build a standalone JAR and Debian package, you need maven
:
mvn clean package
Installing
To install the Cepheus-CEP, you just have to download the standalone JAR.
Download from Sonatype Central repository with Maven
If you have maven
, you can run the following command:
mvn dependency:get -DgroupId=com.orange.cepheus -DartifactId=cepheus-cep -Dversion=XXXX -Dtransitive=false
where XXXX
is the version you want, like 0.1.2-SNAPSHOT
or LATEST
.
Download from Sonatype Central repository using wget
If you don't have maven
installed on your machine, you can still download the standalone JAR using wget
or any browser:
wget "https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=com.orange.cepheus&a=cepheus-cep&v=LATEST"
Running
Cepheus-CEP is a SpringBoot application. You can run either run it directly from the source with maven
:
mvn spring-boot:run
or from the standalone JAR:
java -jar cepheus-cep.jar
Debian package
The Cepheus-CEP is also provided in a preconfigured Debian package to ease deployment on Debian and Raspbian systems.
Downloading
Download the Debian package from Sonatype Central repository using wget
:
wget "https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=com.orange.cepheus&a=cepheus-cep&v=LATEST&p=deb"
Installing
Install using dpkg
:
dpkg -i cepheus-cep.deb
The package will automatically:
- place the standalone JAR under
/usr/lib/cepheus
- setup configuration file under
/etc/cepheus/cep.properties
- add a
cepheus-cep
init.d startup script under/etc/init.d/cepheus-cep
- start the
cepheus-cep
on startup of the machine on port8080
- put logs under
/var/log/cepheus/cep.log
- put data under
/var/cepheus/cep.json
Running
To start and stop the Cepheus-CEP daemon, use the common service
command:
service cepheus-cep start
service cepheus-cep stop
service cepheus-cep restart
Configuration
You modify some application settings either editing:
- the
src/main/resources/application.properties
file when building from the source, - an external configuration like
/etc/cepheus/cep.properties
from the Debian package.
This is a short list of the application properties:
Name | Description | Default value |
---|---|---|
server.port | port used | 8080 |
data.file | data file location | /tmp/cepheus.json |
subscriptionManager.periodicity | Periodicity of the subscription manager task | 300000 |
subscriptionManager.duration | Duration of a NGSI subscription | PT1H |
logging.level.com.orange.cepheus.cep | log level | INFO |
Please look at the src/main/resources/application.properties
for all the properties and their default values.
Command line parameters
You can modify all the application properties from the command line:
java -jar cepheus-cep.jar --property=value
Example:
java -jar cepheus-cep.jar --server.port=8080 --data.file=/var/cepheus/cep.json
External configuration file
If you want to customize application properties after the application has been packaged, you can override the default properties in an external properties file.
You can either:
- Put a
application.properties
in the current path.
or under./config/
, -
or specify a custom location for the file using
--spring.config.location
:java -jar cepheus.cep.jar --spring.config.location=/etc/cepheus/cep.properties
Data file
The Cepheus-CEP loads its data on startup and saves back data updates to a single JSON file.
The default location of the data file is defined by the data.file
property.
This Cepheus-CEP process must have write access rights on this file.
User guide
The complete user & programming guide can be found here