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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2010 NorthScale, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libvbucket/vbucket.h>
size_t MAX_KEY_SIZE = 14;
int main(int argc, char **argv) {
VBUCKET_CONFIG_HANDLE vb = NULL;
int rval;
int num_keys_per_vbucket;
int num_keys_to_generate;
int num_vbuckets;
char *** keys;
int i, j, v, k, total;
char *key;
if (argc < 4) {
printf("vbucketkeygen mapfile <keys per vbucket> <keys to generate>\n\n");
printf(" vbucketkeygen will output a list of keys that equally\n");
printf(" distribute amongst every vbucket.\n\n");
printf(" vbucketkeygen expects a vBucketServerMap JSON mapfile, and\n");
printf(" will print the keyname and vBucketId.\n");
printf(" You may use '-' instead for the filename to specify stdin.\n\n");
printf(" Examples:\n");
printf(" ./vbucketkeygen file.json 10 10000\n\n");
printf(" curl http://HOST:8091/pools/default/buckets/default | \\\n");
printf(" ./vbucketkeygen - 5 10000\n");
exit(1);
}
if (strcmp("-", argv[1]) == 0) {
char buf[50000];
if (fgets(buf, sizeof(buf) - 1, stdin) == NULL) {
fprintf(stderr, "ERROR: vbucketkeygen found no input on stdin\n");
exit(1);
}
buf[sizeof(buf) - 1] = '\0';
vb = vbucket_config_parse_string(buf);
} else {
vb = vbucket_config_parse_file(argv[1]);
}
if (vb == NULL) {
fprintf(stderr, "ERROR: vbucket_config_parse_string error: %s\n", vbucket_get_error());
exit(1);
}
rval = 0;
num_keys_per_vbucket = atoi(argv[2]);
num_keys_to_generate = atoi(argv[3]);
num_vbuckets = vbucket_config_get_num_vbuckets(vb);
/* allocate memory and set each key to null since strdup will allocate that */
keys = malloc(sizeof(char***) * num_vbuckets);
for (i = 0; i < num_vbuckets; i++) {
keys[i] = malloc(sizeof(char**) * num_keys_per_vbucket);
}
for (i = 0; i < num_vbuckets; i++) {
for (j = 0 ; j < num_keys_per_vbucket ; j++) {
keys[i][j] = 0;
}
}
/* generate keys and copy them to the keys structure */
key = malloc(sizeof(char) * (MAX_KEY_SIZE+1));
for (i = 0; i < num_keys_to_generate; i++) {
snprintf(key, MAX_KEY_SIZE + 1, "key_%010d", i);
v = vbucket_get_vbucket_by_key(vb, key, strlen(key));
for (k = 0; k < num_keys_per_vbucket; k++) {
if (keys[v][k] == 0) {
keys[v][k] = strdup(key);
break;
}
}
}
/* print out <key> <vbucket> and count up total keys
so we can check that every vbucket has the correct
number of keys */
total = 0;
for (i = 0; i < num_vbuckets; i++) {
for (j = 0 ; j < num_keys_per_vbucket ; j++) {
if (keys[i][j] != 0) {
printf("%s %d\n", keys[i][j], i);
total++;
}
}
}
if (total < (num_vbuckets * num_keys_per_vbucket)) {
fprintf(stderr, "some vbuckets don't have enough keys\n");
rval = 1;
}
vbucket_config_destroy(vb);
return rval;
}
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