Time Series Database (TSDB) SDK cannot be used to forcibly handle exceptions. All exceptions are thrown by using the RuntimeException class. You can catch and handle exceptions based on your business requirements.
Common exceptions
Exception class | Description |
HttpClientException | An exception occurs on the client. |
HttpClientConnectionRefusedException | The TSDB server prevents the connection from being established. |
HttpClientInitException | An exception occurs when the client is being initialized. |
HttpClientSocketTimeoutException | The request times out. |
HttpServerErrorException | A 5xx error code is returned by the TSDB server. |
HttpServerNotSupportException | A 4xx error code is returned by the TSDB server. |
HttpUnknowStatusException | The response code returned by the TSDB server is unknown. |
BufferQueueFullException | The buffer queue for asynchronous requests is full. |
Handle exceptions
Handle exceptions that occur when synchronous operations are performed
try {
tsdb.ttl(10000);
} catch(HttpServerNotSupportException e) {
int status = e.getStatus();
String message = e.getMessage();
System.err.println(status + "," + message);
} catch(HttpServerErrorException e) {
int status = e.getStatus();
String message = e.getMessage();
System.err.println(status + "," + message);
}
Handle exceptions that occur when asynchronous operations are performed
Override the failed() method to handle an exception.
QueryCallback cb = new QueryCallback() {
@Override
public void response(Query input, List<QueryResult> result) {
System.out.println("Query parameters:" + input);
System.out.println("Returned result:" + result);
}
// Override the failed() method to handle an exception.
@Override
public void failed(Query request, Exception ex) {
super.failed(request, ex);
}
};
BatchPutCallback cb = new BatchPutCallback() {
@Override
public void response(List<Point> input, Result output) {
long afterNum = num.addAndGet(input.size());
System.out.println("Successful" + input.size() + ", Processed" + afterNum);
}
@Override
public void failed(List<Point> input, Exception ex) {
ex.printStackTrace();
long afterNum = num.addAndGet(input.size());
System.out.println("Failed" + input.size() + ", Processed" + afterNum);
}
};