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UpandRunning
You need: A Unix'ish environment w/ git, wget, tar, sed, etc
You need: Java 7 (OpenJDK 7, etc), and Maven 3
# Terminal 1 wget -O http://www.apache.org/dist/cassandra/2.0.7/apache-cassandra-2.0.7-bin.tar.gz tar xvf apache-cassandra-2.0.7-bin.tar.gz cd apache-cassandra-2.0.7/ sed -i "s/var\/lib/tmp/g" conf/cassandra.yaml sed -i "s/var\/log/tmp/g" conf/log4j-server.properties bin/cassandra -f
At this point, if there were no exceptions, Cassandra will be running in the foreground, with log output printed to the console. Open a new console, and enter the following:
# Terminal 2 git clone https://github.com/OpenNMS/newts.git NEWTSSRC=`pwd`/newts cd $NEWTSSRC mvn install
This downloads and builds the Newts source, and installs it to your Maven repository (usually ~/.m2/repository
).
Next, we'll initialize (create the Newts schema), and start the REST endpoint:
# Terminal 2 cd $NEWTSSRC/rest java -jar target/newts-rest-1.0.0-SNAPSHOT.jar init example-config.yaml java -jar target/newts-rest-1.0.0-SNAPSHOT.jar server example-config.yaml
Note: During initialization, SLF4J may complain about logger implementations, you can safely ignore this.
Note: During Newts server startup, you may see warnings about missing compression libraries from the Cassandra driver, you can safely ignore these.
$NEWTS/rest/measurements.txt
contains samples in the JSON representation that Newts expects. Importing these samples is a quick way to be sure everything is working:
# Terminal 3 # Import test samples curl -D - -X POST -H "Content-Type: application/json" -d @measurements.txt \ http://0.0.0.0:8080/samples # Read test samples curl -D - -X GET 'http://0.0.0.0:8080/samples/localhost%3Achassis%3Atemps?start=1998-07-09T12:05:00-0500&end=1998-07-09T13:15:00-0500'; echo
Why not try the Global Summary of Day (weather data) demo?
- Getting Started
- Data Model
- Running a REST Service
- Using the Java API
- Aggregation
- Search
- API Reference * Java * REST
- Hacking Newts