Testing and Deployment: Quality Is King - Deploying and Managing a Cloud Infrastructure - page 313

protected float getFloat(String value) {
if(value != null && !value.equals("")) {
return Float.parseFloat(value);
}
return 0;
}
protected String getElementValue(Element parent,String label) {
return getCharacterDataFromElement((Element)parent
.getElementsByTagName(label).item(0));
}
public static void main(String[] args) {
RSSReader reader = RSSReader.getInstance();
reader.writeNews();
}
}

FIGURE 10.13 Overview of multihop system

Web service

Avro
source

Avro
sink

Source

Channel

Avro
source

HDFS
sink

Source

Agent 1

Channel

Avro
source

Avro
sink

Source

Collector

HDFS1

Channel

HDFS2 HDFS3

Agent 2

Web service