private void handleException(Exception e) {
if (INTERRUPTED_EXCEPTION_TYPES.contains(e.getClass())) {
LOG.info("Changes feed was interrupted");
} else {
LOG.error("Caught exception while listening to changes feed:", e);
}
}
protected void generateView(Map<String, org.ektorp.support.DesignDocument.View> views, Field f) {
DocumentReferences referenceMetaData = f.getAnnotation(DocumentReferences.class);
if (referenceMetaData == null) {
LOG.warn("No DocumentReferences annotation found in field: ", f.getName());
return;
}
if (referenceMetaData.view().length() > 0) {
LOG.debug("Skipping view generation for field {} as view is already specified", f.getName());
return;
}
if (Set.class.isAssignableFrom(f.getType())) {
generateSetBasedDocRefView(views, f, referenceMetaData);
} else {
throw new ViewGenerationException(
String.format(
"The type of the field: %s in %s annotated with DocumentReferences is not supported. (Must be assignable from java.util.Set)",
f.getName(), f.getDeclaringClass()));
}
}
protected void generateView(
Map<String, org.ektorp.support.DesignDocument.View> views, Method me) {
DocumentReferences referenceMetaData = me.getAnnotation(DocumentReferences.class);
if (referenceMetaData == null) {
LOG.warn("No DocumentReferences annotation found in method: ", me.getName());
return;
}
if (!me.getName().startsWith("get")) {
throw new ViewGenerationException(
String.format(
"The method: %s in %s annotated with DocumentReferences does not conform to the naming convention of 'getXxxx'",
me.getName(), me.getDeclaringClass()));
}
if (Set.class.isAssignableFrom(me.getReturnType())) {
generateSetBasedDocRefView(views, me, referenceMetaData);
} else {
throw new ViewGenerationException(
String.format(
"The return type of: %s in %s annotated with DocumentReferences is not supported. (Must be assignable from java.util.Set)",
me.getName(), me.getDeclaringClass()));
}
}
public void run() {
try {
String line = reader.readLine();
while (shouldRun && line != null) {
if (line.length() > 0) {
handleChange(line);
} else {
handleHeartbeat();
}
line = reader.readLine();
}
String reason = !shouldRun ? "Cancelled" : "EOF";
LOG.info("Changes feed stopped. Reason: " + reason);
} catch (Exception e) {
handleException(e);
} finally {
sendInterruptMarker();
httpResponse.abort();
try {
reader.close();
} catch (IOException e) {
}
}
}
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "RV_RETURN_VALUE_IGNORED_BAD_PRACTICE")
private void sendInterruptMarker() {
LOG.debug("Sending interrupt marker in order to interrupt feed consumer");
changes.offer(INTERRUPT_MARKER);
}
public void cancel() {
LOG.debug("Feed cancelled");
shouldRun = false;
thread.interrupt();
}
private void handleHeartbeat() {
LOG.debug("Got heartbeat from DB");
}