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sonLibKVDatabaseConf.c
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sonLibKVDatabaseConf.c
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/*
* Copyright (C) 2006-2012 by Benedict Paten (benedictpaten@gmail.com)
*
* Released under the MIT license, see LICENSE.txt
*/
/*
* sonLibKVDatabaseConf.c
*
* Created on: 2010-08-23
* Author: Mark Diekhans
*/
#include "sonLibKVDatabaseConf.h"
#include "sonLibKVDatabase.h"
#include "sonLibExcept.h"
#include "sonLibTypes.h"
#include "sonLibString.h"
#include "stSafeC.h"
#include "sonLib.h"
/* object storing the database configuration */
struct stKVDatabaseConf {
stKVDatabaseType type;
char *databaseDir;
char *host;
unsigned port;
int timeout;
int64_t maxKTRecordSize;
int64_t maxKTBulkSetSize;
int64_t maxRedisBulkSetSize;
int64_t maxKTBulkSetNumRecords;
char *user;
char *password;
char *databaseName;
char *tableName;
};
stKVDatabaseConf *stKVDatabaseConf_constructTokyoCabinet(const char *databaseDir) {
stKVDatabaseConf *conf = stSafeCCalloc(sizeof(stKVDatabaseConf));
conf->type = stKVDatabaseTypeTokyoCabinet;
conf->databaseDir = stString_copy(databaseDir);
return conf;
}
stKVDatabaseConf *stKVDatabaseConf_constructKyotoTycoon(const char *host, unsigned port, int timeout,
int64_t maxRecordSize, int64_t maxBulkSetSize,
int64_t maxBulkSetNumRecords,
const char *databaseDir, const char* databaseName) {
stKVDatabaseConf *conf = stSafeCCalloc(sizeof(stKVDatabaseConf));
conf->type = stKVDatabaseTypeKyotoTycoon;
conf->databaseDir = stString_copy(databaseDir);
conf->host = stString_copy(host);
conf->port = port;
conf->timeout = timeout;
conf->maxKTRecordSize = maxRecordSize;
conf->maxKTBulkSetSize = maxBulkSetSize;
conf->maxKTBulkSetNumRecords = maxBulkSetNumRecords;
conf->databaseName = stString_copy(databaseName);
return conf;
}
stKVDatabaseConf *stKVDatabaseConf_constructRedis(const char *host, unsigned port, int64_t maxRedisBulkSetSize) {
stKVDatabaseConf *conf = stSafeCCalloc(sizeof(stKVDatabaseConf));
conf->type = stKVDatabaseTypeRedis;
conf->host = stString_copy(host);
conf->port = port;
conf->maxRedisBulkSetSize = maxRedisBulkSetSize;
return conf;
}
static stKVDatabaseConf *constructSql(stKVDatabaseType type, const char *host, unsigned port, const char *user, const char *password,
const char *databaseName, const char *tableName) {
stKVDatabaseConf *conf = stSafeCCalloc(sizeof(stKVDatabaseConf));
conf->type = type;
conf->host = stString_copy(host);
conf->port = port;
conf->user = stString_copy(user);
conf->password = stString_copy(password);
conf->databaseName = stString_copy(databaseName);
conf->tableName = stString_copy(tableName);
return conf;
}
stKVDatabaseConf *stKVDatabaseConf_constructMySql(const char *host, unsigned port, const char *user, const char *password,
const char *databaseName, const char *tableName) {
#ifndef HAVE_MYSQL
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID,
"requested MySQL database, however sonlib is not compiled with MySql support");
#endif
return constructSql(stKVDatabaseTypeMySql, host, port, user, password, databaseName, tableName);
}
char *getNextToken(char **tokenStream) {
char *token = stString_getNextWord(tokenStream);
if(token != NULL) {
char *cA = stString_replace(token, "\"", "");
free(token);
token = stString_replace(cA, "'", "");
free(cA);
}
return token;
}
static void getExpectedToken(char **tokenStream, const char *expected) {
char *cA = getNextToken(tokenStream);
if (!stString_eq(cA, expected)) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID,
"BUG: expected the token: %s in database XML string, but I got: %s from the stream %s",
expected, cA, *tokenStream);
}
free(cA);
}
static char *getKeyValue(char **tokenStream, const char *key) {
getExpectedToken(tokenStream, key);
return getNextToken(tokenStream);
}
/* Parse XML string into a hash. This parses all attributes of all tags
* into values. st_kv_database_conf type is stored as conf_type,
* database tag is stores as db_tag. This does minimal error checking
* and is really lame.
*/
static stHash *hackParseXmlString(const char *xmlString) {
stHash *hash = stHash_construct3(stHash_stringKey, stHash_stringEqualKey, free, free);
char *toReplace[5] = { "</", "<", "/>", ">", "=" };
char *cA = stString_replace(xmlString, toReplace[0], " "), *cA2;
for (int64_t i = 1; i < 5; i++) {
cA2 = stString_replace(cA, toReplace[i], " ");
free(cA);
cA = cA2;
}
getExpectedToken(&cA2, "st_kv_database_conf");
stHash_insert(hash, stString_copy("conf_type"), getKeyValue(&cA2, "type"));
stHash_insert(hash, stString_copy("db_tag"), getNextToken(&cA2));
char *key;
while (((key = getNextToken(&cA2)) != NULL) && !stString_eq(key, "st_kv_database_conf")) {
char *value = getNextToken(&cA2);
if (value == NULL) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "failed to to get value for key \"%s\"", key);
}
if (stHash_search(hash, key) != NULL) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "got a duplicate entry in the database conf string \"%s\"", key);
}
stHash_insert(hash, key, value);
}
if(!stString_eq(key, "st_kv_database_conf")) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "got an unexpected final entry \"%s\"", key);
}
free(key);
free(cA);
return hash;
}
static const char *getXmlValueRequired(stHash *hash, const char *key) {
const char *value = stHash_search(hash, (char*)key);
if (value == NULL) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "did not find a \"%s\" value in the database XML string", key);
}
return value;
}
static int getXmlPort(stHash *hash) {
const char *value = stHash_search(hash, "port");
if (value == NULL) {
return 0;
} else {
return stSafeStrToUInt32(value);
}
}
static int getXmlTimeout(stHash *hash) {
const char *value = stHash_search(hash, "timeout");
if (value == NULL) {
// default to -1 -- meaning no timeout
return -1;
} else {
return stSafeStrToUInt32(value);
}
}
/* Default to 50M. It used to be 175M but since noticing
* problems in bulk *get* within cactus secondary dbs we
* crank it way down. Unlike bulk set, in the get we don't
* know the total size of the requested records. To prevent
* big data transfers (which are problematic), we reduce max
* size of individual records and hope for the best
*/
static int64_t getXMLMaxKTRecordSize(stHash *hash) {
const char *value = stHash_search(hash, "max_record_size");
if (value == NULL) {
return (int64_t) 10000000;
} else {
return stSafeStrToInt64(value);
}
}
/* Default to 175M which seems to be about where the
* kyoto tycoon network error danger zone starts
*/
static int64_t getXMLMaxKTBulkSetSize(stHash *hash) {
const char *value = stHash_search(hash, "max_bulkset_size");
if (value == NULL) {
return (int64_t) 183500800;
} else {
return stSafeStrToInt64(value);
}
}
/* Default to tried-and-true value of 10000
*/
static int64_t getXMLMaxKTBulkSetNumRecords(stHash *hash) {
const char *value = stHash_search(hash, "max_bulkset_num_records");
if (value == NULL) {
return (int64_t) 10000;
} else {
return stSafeStrToInt64(value);
}
}
/* Default to 1.75GB which seems to be about where the
* redis network error danger zone starts
*/
static int64_t getXMLMaxRedisBulkSetSize(stHash *hash) {
const char *value = stHash_search(hash, "max_bulkset_size");
if (value == NULL) {
return (int64_t) 175000000000;
} else {
return stSafeStrToInt64(value);
}
}
static stKVDatabaseConf *constructFromString(const char *xmlString) {
stHash *hash = hackParseXmlString(xmlString);
stKVDatabaseConf *databaseConf = NULL;
const char *type = getXmlValueRequired(hash, "conf_type");
const char *dbTag = getXmlValueRequired(hash, "db_tag");
if (!stString_eq(type, dbTag)) {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "Database XML tag \"%s\" did not match st_kv_database_conf type attribute", dbTag, type);
}
if (stString_eq(type, "tokyo_cabinet")) {
databaseConf = stKVDatabaseConf_constructTokyoCabinet(getXmlValueRequired(hash, "database_dir"));
} else if (stString_eq(type, "kyoto_tycoon")) {
databaseConf = stKVDatabaseConf_constructKyotoTycoon(getXmlValueRequired(hash, "host"),
getXmlPort(hash),
getXmlTimeout(hash),
getXMLMaxKTRecordSize(hash),
getXMLMaxKTBulkSetSize(hash),
getXMLMaxKTBulkSetNumRecords(hash),
getXmlValueRequired(hash, "database_dir"),
stHash_search(hash, "database_name"));
} else if (stString_eq(type, "mysql")) {
databaseConf = stKVDatabaseConf_constructMySql(getXmlValueRequired(hash, "host"), getXmlPort(hash),
getXmlValueRequired(hash, "user"), getXmlValueRequired(hash, "password"),
getXmlValueRequired(hash, "database_name"), getXmlValueRequired(hash, "table_name"));
} else if (stString_eq(type, "redis")) {
databaseConf = stKVDatabaseConf_constructRedis(getXmlValueRequired(hash, "host"), getXmlPort(hash),
getXMLMaxRedisBulkSetSize(hash));
} else {
stThrowNew(ST_KV_DATABASE_EXCEPTION_ID, "invalid database type \"%s\"", type);
}
stHash_destruct(hash);
return databaseConf;
}
stKVDatabaseConf *stKVDatabaseConf_constructFromString(const char *xmlString) {
stKVDatabaseConf *conf = NULL;
stTry {
conf = constructFromString(xmlString);
} stCatch(ex) {
stThrowNewCause(ex, ST_KV_DATABASE_EXCEPTION_ID, "Invalid database XML specification: %s", xmlString);
} stTryEnd;
return conf;
}
stKVDatabaseConf *stKVDatabaseConf_constructClone(stKVDatabaseConf *srcConf) {
stKVDatabaseConf *conf = stSafeCCalloc(sizeof(stKVDatabaseConf));
conf->type = srcConf->type;
conf->databaseDir = stString_copy(srcConf->databaseDir);
conf->host = stString_copy(srcConf->host);
conf->port = srcConf->port;
conf->timeout = srcConf->timeout;
conf->maxKTRecordSize = srcConf->maxKTRecordSize;
conf->maxKTBulkSetSize = srcConf->maxKTBulkSetSize;
conf->maxRedisBulkSetSize = srcConf->maxRedisBulkSetSize;
conf->maxKTBulkSetNumRecords = srcConf->maxKTBulkSetNumRecords;
conf->user = stString_copy(srcConf->user);
conf->password = stString_copy(srcConf->password);
conf->databaseName = stString_copy(srcConf->databaseName);
conf->tableName = stString_copy(srcConf->tableName);
return conf;
}
void stKVDatabaseConf_destruct(stKVDatabaseConf *conf) {
if (conf != NULL) {
stSafeCFree(conf->databaseDir);
stSafeCFree(conf->host);
stSafeCFree(conf->user);
stSafeCFree(conf->password);
stSafeCFree(conf->databaseName);
stSafeCFree(conf->tableName);
stSafeCFree(conf);
}
}
stKVDatabaseType stKVDatabaseConf_getType(stKVDatabaseConf *conf) {
return conf->type;
}
const char *stKVDatabaseConf_getDir(stKVDatabaseConf *conf) {
return conf->databaseDir;
}
const char *stKVDatabaseConf_getHost(stKVDatabaseConf *conf) {
return conf->host;
}
unsigned stKVDatabaseConf_getPort(stKVDatabaseConf *conf) {
return conf->port;
}
int stKVDatabaseConf_getTimeout(stKVDatabaseConf *conf) {
return conf->timeout;
}
int64_t stKVDatabaseConf_getMaxKTRecordSize(stKVDatabaseConf *conf) {
return conf->maxKTRecordSize;
}
void stKVDatabaseConf_setMaxKTRecordSize(stKVDatabaseConf *conf,
int64_t maxRecordSize) {
conf->maxKTRecordSize = maxRecordSize;
}
int64_t stKVDatabaseConf_getMaxKTBulkSetSize(stKVDatabaseConf *conf) {
return conf->maxKTBulkSetSize;
}
int64_t stKVDatabaseConf_getMaxKTBulkSetNumRecords(stKVDatabaseConf *conf) {
return conf->maxKTBulkSetNumRecords;
}
int64_t stKVDatabaseConf_getMaxRedisBulkSetSize(stKVDatabaseConf *conf) {
return conf->maxRedisBulkSetSize;
}
const char *stKVDatabaseConf_getUser(stKVDatabaseConf *conf) {
return conf->user;
}
const char *stKVDatabaseConf_getPassword(stKVDatabaseConf *conf) {
return conf->password;
}
const char *stKVDatabaseConf_getDatabaseName(stKVDatabaseConf *conf) {
return conf->databaseName;
}
const char *stKVDatabaseConf_getTableName(stKVDatabaseConf *conf) {
return conf->tableName;
}