static {
xs = new XStream(new DomDriver());
xs.alias("pipe", FilterPipeInfo.class);
xs.alias("svr", String.class);
// xs.alias("dfas", (new String[0]).getClass());
// xs.alias("name", null);
}
/**
* reads the configuration file and returns a <code>FilterPipeInfo</code> object.
*
* @throws Exception if anything goes wrong while reading the configuration file.
*/
public static FilterPipeInfo read(String fName, Map servers) throws Exception {
Reader r = new FileReader(fName);
FilterPipeInfo pipe = (FilterPipeInfo) (xs.fromXML(r));
pipe.name = getName(fName);
int l = pipe.dfas.size();
pipe.request = new PipelineRequest[l];
for (int i = 0; i < l; i++) {
// System.out.println("looking up `"+ pipe.dfas.get(i)+"'");
FilterSvrInfo svr = (FilterSvrInfo) servers.get(pipe.dfas.get(i));
if (svr == null) {
pipe.e = new IOException("no information for server `" + pipe.dfas.get(i) + "' available");
return pipe;
}
if (svr.e != null) {
Exception e =
new IOException(
"referenced server configuration for server `" + svr.name + "' is broken");
e.initCause(svr.e);
pipe.e = e;
return pipe;
}
pipe.request[i] = svr.getRequest();
}
return pipe;
}
/** ******************************************************************* */
void write(Writer out) {
xs.toXML(this, out);
}