9b1df5b1af
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@3785 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* histogram.cpp
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*
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* Copyright 2010-2012 Yahoo! Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Created on: Mar 2, 2010
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* Author: sears
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*/
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#include "../tcpclient.h"
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#include "../network.h"
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#include "../datatuple.h"
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void usage(char * argv[]) {
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fprintf(stderr, "usage %s [n] [host [port]]\n", argv[0]);
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}
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#include "util_main.h"
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int main(int argc, char * argv[]) {
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unsigned long long count = 3;
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if(argc > 1) {
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char * end;
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unsigned long long n = strtoull(argv[1], &end, 10);
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if(argv[1][0] && !*end) {
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count = n;
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argc--;
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argv++;
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}
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}
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logstore_handle_t * l = util_open_conn(argc, argv);
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// datatuple * ret
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uint8_t rcode = logstore_client_op_returns_many(l, OP_STAT_HISTOGRAM, NULL, NULL, count);
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if(opiserror(rcode)) {
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fprintf(stderr, "Histogram request returned logstore error code %d\n", rcode);
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perror("Histogram generation failed."); return 3;
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} else {
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dataTuple *ret;
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bool first = true;
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while(( ret = logstore_client_next_tuple(l) )) {
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if(first) {
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assert(ret->rawkeylen() == sizeof(uint64_t));
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uint64_t stride = *(uint64_t*)ret->rawkey();
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printf("Stride: %lld\n", (long long)stride);
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first = false;
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} else {
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assert(ret->strippedkey()[ret->strippedkeylen()-1] == 0); // check for null terminator.
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printf("\t%s\n", (char*)ret->strippedkey());
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}
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dataTuple::freetuple(ret);
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}
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}
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logstore_client_close(l);
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return 0;
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}
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