use of datawave.webservice.query.exception.DatawaveErrorCode in project datawave by NationalSecurityAgency.
the class CachedResultsBean method getRows.
/**
* Returns a set of rows based on the given starting and end positions. The response object type is dynamic, see the listQueryLogic operation to determine
* what the response type object will be.
*
* @param queryId
* CachedResults queryId
* @param rowBegin
* first row to be returned
* @param rowEnd
* last row to be returned
* @return datawave.webservice.result.BaseQueryResponse
* @RequestHeader X-ProxiedEntitiesChain use when proxying request for user by specifying a chain of DNs of the identities to proxy
* @RequestHeader X-ProxiedIssuersChain required when using X-ProxiedEntitiesChain, specify one issuer DN per subject DN listed in X-ProxiedEntitiesChain
* @RequestHeader query-session-id session id value used for load balancing purposes. query-session-id can be placed in the request in a Cookie header or as
* a query parameter
* @ResponseHeader X-OperationTimeInMS time spent on the server performing the operation, does not account for network or result serialization
* @ResponseHeader X-Partial-Results true if the page contains less than the requested number of results
*
* @HTTP 200 success
* @HTTP 401 caller is not authorized to run the query
* @HTTP 412 if the query is not active
* @HTTP 500 internal server error
*/
@GET
@javax.ws.rs.Path("/{queryId}/getRows")
@Produces({ "application/xml", "text/xml", "application/json", "text/yaml", "text/x-yaml", "application/x-yaml", "application/x-protobuf" })
@GZIP
@Interceptors({ RequiredInterceptor.class, ResponseInterceptor.class })
@Timed(name = "dw.cachedr.getRows", absolute = true)
public BaseQueryResponse getRows(@PathParam("queryId") @Required("queryId") String queryId, @QueryParam("rowBegin") @DefaultValue("1") Integer rowBegin, @QueryParam("rowEnd") Integer rowEnd) {
BaseQueryResponse response = responseObjectFactory.getEventQueryResponse();
// Find out who/what called this method
Principal p = ctx.getCallerPrincipal();
String owner = getOwnerFromPrincipal(p);
try {
if (rowBegin < 1) {
throw new BadRequestQueryException(DatawaveErrorCode.ROW_BEGIN_LESS_THAN_1);
}
if (rowEnd != null && rowEnd < rowBegin) {
throw new BadRequestQueryException(DatawaveErrorCode.ROW_END_LESS_THAN_ROW_BEGIN);
}
// If there is a this.maxPageSize set, then we should honor it here. Otherwise, we use Integer.MAX_VALUE
int maxPageSize = cachedResultsConfiguration.getMaxPageSize();
if (rowEnd == null) {
if (maxPageSize > 0) {
rowEnd = (rowBegin + maxPageSize) - 1;
} else {
rowEnd = Integer.MAX_VALUE;
}
}
int pagesize = (rowEnd - rowBegin) + 1;
if (maxPageSize > 0 && pagesize > maxPageSize) {
throw new QueryException(DatawaveErrorCode.TOO_MANY_ROWS_REQUESTED, MessageFormat.format("Size must be less than or equal to: {0}", maxPageSize));
}
CachedRunningQuery crq = null;
try {
// Get the CachedRunningQuery object from the cache
try {
crq = retrieve(queryId, owner);
} catch (IOException e) {
throw new PreConditionFailedQueryException(DatawaveErrorCode.CACHED_RESULTS_IMPORT_ERROR, e);
}
if (null == crq)
throw new PreConditionFailedQueryException(DatawaveErrorCode.QUERY_NOT_CACHED);
response = crq.getQueryLogic().getResponseObjectFactory().getEventQueryResponse();
if (!crq.getUser().equals(owner)) {
throw new UnauthorizedQueryException(DatawaveErrorCode.QUERY_OWNER_MISMATCH, MessageFormat.format("{0} != {1}", crq.getUser(), owner));
}
synchronized (crq) {
if (crq.isActivated() == false) {
Connection connection = ds.getConnection();
String logicName = crq.getQueryLogicName();
QueryLogic<?> queryLogic = queryFactory.getQueryLogic(logicName, p);
crq.activate(connection, queryLogic);
}
try {
ResultsPage resultList = crq.getRows(rowBegin, rowEnd, cachedResultsConfiguration.getPageByteTrigger());
response = crq.getTransformer().createResponse(resultList);
Status status;
if (!resultList.getResults().isEmpty()) {
response.setHasResults(true);
status = Status.OK;
} else {
response.setHasResults(false);
status = Status.NO_CONTENT;
}
response.setLogicName(crq.getQueryLogic().getLogicName());
response.setQueryId(crq.getQueryId());
if (response instanceof TotalResultsAware) {
((TotalResultsAware) response).setTotalResults(crq.getTotalRows());
}
if (status == Status.NO_CONTENT) {
throw new NoResultsQueryException(DatawaveErrorCode.NO_CONTENT_STATUS);
}
crq.getMetric().setLifecycle(QueryMetric.Lifecycle.RESULTS);
return response;
} catch (SQLException e) {
throw new QueryException();
} catch (NoResultsQueryException e) {
throw e;
} catch (RuntimeException e) {
log.error(e.getMessage(), e);
throw e;
} finally {
crq.closeConnection(log);
}
}
} finally {
// Push metrics
try {
if (null != crq && crq.getQueryLogic().getCollectQueryMetrics() == true) {
metrics.updateMetric(crq.getMetric());
}
} catch (Exception e1) {
log.error("Error updating metrics", e1);
}
}
} catch (Exception e) {
DatawaveErrorCode dec;
if (e instanceof NoResultsQueryException) {
dec = DatawaveErrorCode.NO_CONTENT_STATUS;
} else {
dec = DatawaveErrorCode.CACHED_QUERY_TRANSACTION_ERROR;
}
QueryException qe = new QueryException(dec, e);
log.error(qe);
response.addException(qe.getBottomQueryException());
int statusCode = qe.getBottomQueryException().getStatusCode();
throw new DatawaveWebApplicationException(qe, response, statusCode);
}
}
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