/* RESTORE key ttl serialized-value */
void restoreCommand(redisClient *c) {
- FILE *fp;
- char buf[64];
robj *o;
- unsigned char *data;
long ttl;
+ rio payload;
+ unsigned char *data;
/* Make sure this key does not already exist here... */
if (dbExists(c->db,c->argv[1])) {
return;
}
- /* rdbLoadObject() only works against file descriptors so we need to
- * dump the serialized object into a file and reload. */
- snprintf(buf,sizeof(buf),"redis-restore-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for RESTORE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"RESTORE failed, tmp file creation error: %s",
- strerror(errno));
- return;
- }
- unlink(buf);
+ /* Temporary hack to get RDB-aligned payload. */
+ payload = rioInitWithBuffer(sdsnewlen(c->argv[3]->ptr+1, sdslen(c->argv[3]->ptr)-1));
+ data = c->argv[3]->ptr;
- /* Write the actual data and rewind the file */
- data = (unsigned char*) c->argv[3]->ptr;
- if (fwrite(data+1,sdslen((sds)data)-1,1,fp) != 1) {
- redisLog(REDIS_WARNING,"Can't write against tmp file for RESTORE: %s",
- strerror(errno));
- addReplyError(c,"RESTORE failed, tmp file I/O error.");
- fclose(fp);
- return;
- }
- rewind(fp);
-
- /* Finally create the object from the serialized dump and
- * store it at the specified key. */
+ /* Create the object from the serialized dump. */
if ((data[0] > 4 && data[0] < 9) ||
data[0] > 11 ||
- (o = rdbLoadObject(data[0],fp)) == NULL)
+ (o = rdbLoadObject(data[0],&payload)) == NULL)
{
addReplyError(c,"Bad data format.");
- fclose(fp);
+ sdsfree(payload.io.buffer.ptr);
return;
}
- fclose(fp);
+ sdsfree(payload.io.buffer.ptr);
/* Create the key and set the TTL if any */
dbAdd(c->db,c->argv[1],o);
int fd;
long timeout;
long dbid;
- char buf[64];
- FILE *fp;
time_t ttl;
robj *o;
unsigned char type;
- off_t payload_len;
+ rio cmd, payload;
/* Sanity check */
if (getLongFromObjectOrReply(c,c->argv[5],&timeout,NULL) != REDIS_OK)
return;
}
- /* Create temp file */
- snprintf(buf,sizeof(buf),"redis-migrate-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file creation error: %s.",
- strerror(errno));
- return;
- }
- unlink(buf);
-
- /* Build the SELECT + RESTORE query writing it in our temp file. */
- if (fwriteBulkCount(fp,'*',2) == 0) goto file_wr_err;
- if (fwriteBulkString(fp,"SELECT",6) == 0) goto file_wr_err;
- if (fwriteBulkLongLong(fp,dbid) == 0) goto file_wr_err;
+ cmd = rioInitWithBuffer(sdsempty());
+ redisAssert(rioWriteBulkCount(&cmd,'*',2));
+ redisAssert(rioWriteBulkString(&cmd,"SELECT",6));
+ redisAssert(rioWriteBulkLongLong(&cmd,dbid));
ttl = getExpire(c->db,c->argv[3]);
type = o->type;
- if (fwriteBulkCount(fp,'*',4) == 0) goto file_wr_err;
- if (fwriteBulkString(fp,"RESTORE",7) == 0) goto file_wr_err;
- if (fwriteBulkObject(fp,c->argv[3]) == 0) goto file_wr_err;
- if (fwriteBulkLongLong(fp, (ttl == -1) ? 0 : ttl) == 0) goto file_wr_err;
+ if (type == REDIS_LIST && o->encoding == REDIS_ENCODING_ZIPLIST)
+ type = REDIS_LIST_ZIPLIST;
+ else if (type == REDIS_HASH && o->encoding == REDIS_ENCODING_ZIPMAP)
+ type = REDIS_HASH_ZIPMAP;
+ else if (type == REDIS_SET && o->encoding == REDIS_ENCODING_INTSET)
+ type = REDIS_SET_INTSET;
+ else
+ type = o->type;
+
+ redisAssert(rioWriteBulkCount(&cmd,'*',4));
+ redisAssert(rioWriteBulkString(&cmd,"RESTORE",7));
+ redisAssert(c->argv[3]->encoding == REDIS_ENCODING_RAW);
+ redisAssert(rioWriteBulkString(&cmd,c->argv[3]->ptr,sdslen(c->argv[3]->ptr)));
+ redisAssert(rioWriteBulkLongLong(&cmd,(ttl == -1) ? 0 : ttl));
/* Finally the last argument that is the serailized object payload
- * in the form: <type><rdb-serailized-object>. */
- payload_len = rdbSavedObjectLen(o);
- if (fwriteBulkCount(fp,'$',payload_len+1) == 0) goto file_wr_err;
- if (fwrite(&type,1,1,fp) == 0) goto file_wr_err;
- if (rdbSaveObject(fp,o) == -1) goto file_wr_err;
- if (fwrite("\r\n",2,1,fp) == 0) goto file_wr_err;
-
- /* Tranfer the query to the other node */
- rewind(fp);
+ * in the form: <type><rdb-serialized-object>. */
+ payload = rioInitWithBuffer(sdsempty());
+ redisAssert(rioWrite(&payload,&type,1));
+ redisAssert(rdbSaveObject(&payload,o) != -1);
+ redisAssert(rioWriteBulkString(&cmd,payload.io.buffer.ptr,sdslen(payload.io.buffer.ptr)));
+ sdsfree(payload.io.buffer.ptr);
+
+ /* Tranfer the query to the other node in 64K chunks. */
{
- char buf[4096];
- size_t nread;
-
- while ((nread = fread(buf,1,sizeof(buf),fp)) != 0) {
- int nwritten;
-
- nwritten = syncWrite(fd,buf,nread,timeout);
- if (nwritten != (signed)nread) goto socket_wr_err;
+ sds buf = cmd.io.buffer.ptr;
+ size_t pos = 0, towrite;
+ int nwritten = 0;
+
+ while ((towrite = sdslen(buf)-pos) > 0) {
+ towrite = (towrite > (64*1024) ? (64*1024) : towrite);
+ nwritten = syncWrite(fd,buf+nwritten,towrite,timeout);
+ if (nwritten != (signed)towrite) goto socket_wr_err;
+ pos += nwritten;
}
- if (ferror(fp)) goto file_rd_err;
}
- /* Read back the reply */
+ /* Read back the reply. */
{
char buf1[1024];
char buf2[1024];
if (syncReadLine(fd, buf1, sizeof(buf1), timeout) <= 0)
goto socket_rd_err;
if (syncReadLine(fd, buf2, sizeof(buf2), timeout) <= 0)
- goto socket_rd_err;
+ goto socket_rd_err;
if (buf1[0] == '-' || buf2[0] == '-') {
addReplyErrorFormat(c,"Target instance replied with error: %s",
(buf1[0] == '-') ? buf1+1 : buf2+1);
addReply(c,shared.ok);
}
}
- fclose(fp);
- close(fd);
- return;
-file_wr_err:
- redisLog(REDIS_WARNING,"Can't write on tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file write error: %s.",
- strerror(errno));
- fclose(fp);
- close(fd);
- return;
-
-file_rd_err:
- redisLog(REDIS_WARNING,"Can't read from tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file read error: %s.",
- strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
strerror(errno));
addReplyErrorFormat(c,"MIGRATE failed, writing to target node: %s.",
strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
strerror(errno));
addReplyErrorFormat(c,"MIGRATE failed, reading from target node: %s.",
strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
}
* DUMP is actually not used by Redis Cluster but it is the obvious
* complement of RESTORE and can be useful for different applications. */
void dumpCommand(redisClient *c) {
- char buf[64];
- FILE *fp;
robj *o, *dumpobj;
sds dump = NULL;
- off_t payload_len;
+ rio payload;
unsigned int type;
/* Check if the key is here. */
return;
}
- /* Create temp file */
- snprintf(buf,sizeof(buf),"redis-dump-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file creation error: %s.",
- strerror(errno));
- return;
- }
- unlink(buf);
-
- /* Dump the serailized object and read it back in memory.
- * We prefix it with a one byte containing the type ID.
- * This is the serialization format understood by RESTORE. */
- if (rdbSaveObject(fp,o) == -1) goto file_wr_err;
- payload_len = ftello(fp);
- if (fseeko(fp,0,SEEK_SET) == -1) goto file_rd_err;
- dump = sdsnewlen(NULL,payload_len+1);
- if (payload_len && fread(dump+1,payload_len,1,fp) != 1) goto file_rd_err;
- fclose(fp);
+ /* Dump the serailized object and read it back in memory. We prefix it
+ * with a one byte containing the type ID. This is the serialization
+ * format understood by RESTORE. */
+ payload = rioInitWithBuffer(sdsempty());
+ redisAssert(rdbSaveObject(&payload,o)); /* always write >= 1 bytes. */
+ dump = sdsnewlen(NULL,sdslen(payload.io.buffer.ptr)+1);
+ memcpy(dump+1,payload.io.buffer.ptr,sdslen(payload.io.buffer.ptr));
+ sdsfree(payload.io.buffer.ptr);
+
type = o->type;
if (type == REDIS_LIST && o->encoding == REDIS_ENCODING_ZIPLIST)
type = REDIS_LIST_ZIPLIST;
addReplyBulk(c,dumpobj);
decrRefCount(dumpobj);
return;
-
-file_wr_err:
- redisLog(REDIS_WARNING,"Can't write on tmp file for DUMP: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file write error: %s.",
- strerror(errno));
- sdsfree(dump);
- fclose(fp);
- return;
-
-file_rd_err:
- redisLog(REDIS_WARNING,"Can't read from tmp file for DUMP: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file read error: %s.",
- strerror(errno));
- sdsfree(dump);
- fclose(fp);
- return;
}
/* -----------------------------------------------------------------------------
-#include "redis.h"
-#include "lzf.h" /* LZF compression library */
-
#include <math.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <sys/stat.h>
+#include "rdb.h"
+#include "lzf.h" /* LZF compression library */
-/* Convenience wrapper around fwrite, that returns the number of bytes written
- * to the file instead of the number of objects (see fwrite(3)) and -1 in the
- * case of an error. It also supports a NULL *fp to skip writing altogether
- * instead of writing to /dev/null. */
-static int rdbWriteRaw(FILE *fp, void *p, size_t len) {
- if (fp != NULL && fwrite(p,len,1,fp) == 0) return -1;
- return len;
+static int rdbWriteRaw(rio *rdb, void *p, size_t len) {
+ if (rioWrite(rdb,p,len) == 0)
+ return -1;
+ return 1;
}
-int rdbSaveType(FILE *fp, unsigned char type) {
- return rdbWriteRaw(fp,&type,1);
+int rdbSaveType(rio *rdb, unsigned char type) {
+ return rdbWriteRaw(rdb,&type,1);
}
-int rdbSaveTime(FILE *fp, time_t t) {
+int rdbSaveTime(rio *rdb, time_t t) {
int32_t t32 = (int32_t) t;
- return rdbWriteRaw(fp,&t32,4);
+ return rdbWriteRaw(rdb,&t32,4);
}
/* check rdbLoadLen() comments for more info */
-int rdbSaveLen(FILE *fp, uint32_t len) {
+int rdbSaveLen(rio *rdb, uint32_t len) {
unsigned char buf[2];
- int nwritten;
+ size_t nwritten;
if (len < (1<<6)) {
/* Save a 6 bit len */
buf[0] = (len&0xFF)|(REDIS_RDB_6BITLEN<<6);
- if (rdbWriteRaw(fp,buf,1) == -1) return -1;
+ if (rdbWriteRaw(rdb,buf,1) == -1) return -1;
nwritten = 1;
} else if (len < (1<<14)) {
/* Save a 14 bit len */
buf[0] = ((len>>8)&0xFF)|(REDIS_RDB_14BITLEN<<6);
buf[1] = len&0xFF;
- if (rdbWriteRaw(fp,buf,2) == -1) return -1;
+ if (rdbWriteRaw(rdb,buf,2) == -1) return -1;
nwritten = 2;
} else {
/* Save a 32 bit len */
buf[0] = (REDIS_RDB_32BITLEN<<6);
- if (rdbWriteRaw(fp,buf,1) == -1) return -1;
+ if (rdbWriteRaw(rdb,buf,1) == -1) return -1;
len = htonl(len);
- if (rdbWriteRaw(fp,&len,4) == -1) return -1;
+ if (rdbWriteRaw(rdb,&len,4) == -4) return -1;
nwritten = 1+4;
}
return nwritten;
return rdbEncodeInteger(value,enc);
}
-int rdbSaveLzfStringObject(FILE *fp, unsigned char *s, size_t len) {
+int rdbSaveLzfStringObject(rio *rdb, unsigned char *s, size_t len) {
size_t comprlen, outlen;
unsigned char byte;
int n, nwritten = 0;
}
/* Data compressed! Let's save it on disk */
byte = (REDIS_RDB_ENCVAL<<6)|REDIS_RDB_ENC_LZF;
- if ((n = rdbWriteRaw(fp,&byte,1)) == -1) goto writeerr;
+ if ((n = rdbWriteRaw(rdb,&byte,1)) == -1) goto writeerr;
nwritten += n;
- if ((n = rdbSaveLen(fp,comprlen)) == -1) goto writeerr;
+ if ((n = rdbSaveLen(rdb,comprlen)) == -1) goto writeerr;
nwritten += n;
- if ((n = rdbSaveLen(fp,len)) == -1) goto writeerr;
+ if ((n = rdbSaveLen(rdb,len)) == -1) goto writeerr;
nwritten += n;
- if ((n = rdbWriteRaw(fp,out,comprlen)) == -1) goto writeerr;
+ if ((n = rdbWriteRaw(rdb,out,comprlen)) == -1) goto writeerr;
nwritten += n;
zfree(out);
/* Save a string objet as [len][data] on disk. If the object is a string
* representation of an integer value we try to save it in a special form */
-int rdbSaveRawString(FILE *fp, unsigned char *s, size_t len) {
+int rdbSaveRawString(rio *rdb, unsigned char *s, size_t len) {
int enclen;
int n, nwritten = 0;
if (len <= 11) {
unsigned char buf[5];
if ((enclen = rdbTryIntegerEncoding((char*)s,len,buf)) > 0) {
- if (rdbWriteRaw(fp,buf,enclen) == -1) return -1;
+ if (rdbWriteRaw(rdb,buf,enclen) == -1) return -1;
return enclen;
}
}
/* Try LZF compression - under 20 bytes it's unable to compress even
* aaaaaaaaaaaaaaaaaa so skip it */
if (server.rdbcompression && len > 20) {
- n = rdbSaveLzfStringObject(fp,s,len);
+ n = rdbSaveLzfStringObject(rdb,s,len);
if (n == -1) return -1;
if (n > 0) return n;
/* Return value of 0 means data can't be compressed, save the old way */
}
/* Store verbatim */
- if ((n = rdbSaveLen(fp,len)) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,len)) == -1) return -1;
nwritten += n;
if (len > 0) {
- if (rdbWriteRaw(fp,s,len) == -1) return -1;
+ if (rdbWriteRaw(rdb,s,len) == -1) return -1;
nwritten += len;
}
return nwritten;
}
/* Save a long long value as either an encoded string or a string. */
-int rdbSaveLongLongAsStringObject(FILE *fp, long long value) {
+int rdbSaveLongLongAsStringObject(rio *rdb, long long value) {
unsigned char buf[32];
int n, nwritten = 0;
int enclen = rdbEncodeInteger(value,buf);
if (enclen > 0) {
- return rdbWriteRaw(fp,buf,enclen);
+ return rdbWriteRaw(rdb,buf,enclen);
} else {
/* Encode as string */
enclen = ll2string((char*)buf,32,value);
redisAssert(enclen < 32);
- if ((n = rdbSaveLen(fp,enclen)) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,enclen)) == -1) return -1;
nwritten += n;
- if ((n = rdbWriteRaw(fp,buf,enclen)) == -1) return -1;
+ if ((n = rdbWriteRaw(rdb,buf,enclen)) == -1) return -1;
nwritten += n;
}
return nwritten;
}
/* Like rdbSaveStringObjectRaw() but handle encoded objects */
-int rdbSaveStringObject(FILE *fp, robj *obj) {
+int rdbSaveStringObject(rio *rdb, robj *obj) {
/* Avoid to decode the object, then encode it again, if the
* object is alrady integer encoded. */
if (obj->encoding == REDIS_ENCODING_INT) {
- return rdbSaveLongLongAsStringObject(fp,(long)obj->ptr);
+ return rdbSaveLongLongAsStringObject(rdb,(long)obj->ptr);
} else {
redisAssert(obj->encoding == REDIS_ENCODING_RAW);
- return rdbSaveRawString(fp,obj->ptr,sdslen(obj->ptr));
+ return rdbSaveRawString(rdb,obj->ptr,sdslen(obj->ptr));
}
}
* 254: + inf
* 255: - inf
*/
-int rdbSaveDoubleValue(FILE *fp, double val) {
+int rdbSaveDoubleValue(rio *rdb, double val) {
unsigned char buf[128];
int len;
buf[0] = strlen((char*)buf+1);
len = buf[0]+1;
}
- return rdbWriteRaw(fp,buf,len);
+ return rdbWriteRaw(rdb,buf,len);
}
/* Save a Redis object. Returns -1 on error, 0 on success. */
-int rdbSaveObject(FILE *fp, robj *o) {
+int rdbSaveObject(rio *rdb, robj *o) {
int n, nwritten = 0;
if (o->type == REDIS_STRING) {
/* Save a string value */
- if ((n = rdbSaveStringObject(fp,o)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,o)) == -1) return -1;
nwritten += n;
} else if (o->type == REDIS_LIST) {
/* Save a list value */
if (o->encoding == REDIS_ENCODING_ZIPLIST) {
size_t l = ziplistBlobLen((unsigned char*)o->ptr);
- if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
+ if ((n = rdbSaveRawString(rdb,o->ptr,l)) == -1) return -1;
nwritten += n;
} else if (o->encoding == REDIS_ENCODING_LINKEDLIST) {
list *list = o->ptr;
listIter li;
listNode *ln;
- if ((n = rdbSaveLen(fp,listLength(list))) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,listLength(list))) == -1) return -1;
nwritten += n;
listRewind(list,&li);
while((ln = listNext(&li))) {
robj *eleobj = listNodeValue(ln);
- if ((n = rdbSaveStringObject(fp,eleobj)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,eleobj)) == -1) return -1;
nwritten += n;
}
} else {
dictIterator *di = dictGetIterator(set);
dictEntry *de;
- if ((n = rdbSaveLen(fp,dictSize(set))) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,dictSize(set))) == -1) return -1;
nwritten += n;
while((de = dictNext(di)) != NULL) {
robj *eleobj = dictGetEntryKey(de);
- if ((n = rdbSaveStringObject(fp,eleobj)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,eleobj)) == -1) return -1;
nwritten += n;
}
dictReleaseIterator(di);
} else if (o->encoding == REDIS_ENCODING_INTSET) {
size_t l = intsetBlobLen((intset*)o->ptr);
- if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
+ if ((n = rdbSaveRawString(rdb,o->ptr,l)) == -1) return -1;
nwritten += n;
} else {
redisPanic("Unknown set encoding");
if (o->encoding == REDIS_ENCODING_ZIPLIST) {
size_t l = ziplistBlobLen((unsigned char*)o->ptr);
- if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
+ if ((n = rdbSaveRawString(rdb,o->ptr,l)) == -1) return -1;
nwritten += n;
} else if (o->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = o->ptr;
dictIterator *di = dictGetIterator(zs->dict);
dictEntry *de;
- if ((n = rdbSaveLen(fp,dictSize(zs->dict))) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,dictSize(zs->dict))) == -1) return -1;
nwritten += n;
while((de = dictNext(di)) != NULL) {
robj *eleobj = dictGetEntryKey(de);
double *score = dictGetEntryVal(de);
- if ((n = rdbSaveStringObject(fp,eleobj)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,eleobj)) == -1) return -1;
nwritten += n;
- if ((n = rdbSaveDoubleValue(fp,*score)) == -1) return -1;
+ if ((n = rdbSaveDoubleValue(rdb,*score)) == -1) return -1;
nwritten += n;
}
dictReleaseIterator(di);
if (o->encoding == REDIS_ENCODING_ZIPMAP) {
size_t l = zipmapBlobLen((unsigned char*)o->ptr);
- if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
+ if ((n = rdbSaveRawString(rdb,o->ptr,l)) == -1) return -1;
nwritten += n;
} else {
dictIterator *di = dictGetIterator(o->ptr);
dictEntry *de;
- if ((n = rdbSaveLen(fp,dictSize((dict*)o->ptr))) == -1) return -1;
+ if ((n = rdbSaveLen(rdb,dictSize((dict*)o->ptr))) == -1) return -1;
nwritten += n;
while((de = dictNext(di)) != NULL) {
robj *key = dictGetEntryKey(de);
robj *val = dictGetEntryVal(de);
- if ((n = rdbSaveStringObject(fp,key)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,key)) == -1) return -1;
nwritten += n;
- if ((n = rdbSaveStringObject(fp,val)) == -1) return -1;
+ if ((n = rdbSaveStringObject(rdb,val)) == -1) return -1;
nwritten += n;
}
dictReleaseIterator(di);
* On error -1 is returned.
* On success if the key was actaully saved 1 is returned, otherwise 0
* is returned (the key was already expired). */
-int rdbSaveKeyValuePair(FILE *fp, robj *key, robj *val,
+int rdbSaveKeyValuePair(rio *rdb, robj *key, robj *val,
time_t expiretime, time_t now)
{
int vtype;
if (expiretime != -1) {
/* If this key is already expired skip it */
if (expiretime < now) return 0;
- if (rdbSaveType(fp,REDIS_EXPIRETIME) == -1) return -1;
- if (rdbSaveTime(fp,expiretime) == -1) return -1;
+ if (rdbSaveType(rdb,REDIS_EXPIRETIME) == -1) return -1;
+ if (rdbSaveTime(rdb,expiretime) == -1) return -1;
}
/* Fix the object type if needed, to support saving zipmaps, ziplists,
* and intsets, directly as blobs of bytes: they are already serialized. */
else if (vtype == REDIS_ZSET && val->encoding == REDIS_ENCODING_ZIPLIST)
vtype = REDIS_ZSET_ZIPLIST;
/* Save type, key, value */
- if (rdbSaveType(fp,vtype) == -1) return -1;
- if (rdbSaveStringObject(fp,key) == -1) return -1;
- if (rdbSaveObject(fp,val) == -1) return -1;
+ if (rdbSaveType(rdb,vtype) == -1) return -1;
+ if (rdbSaveStringObject(rdb,key) == -1) return -1;
+ if (rdbSaveObject(rdb,val) == -1) return -1;
return 1;
}
int rdbSave(char *filename) {
dictIterator *di = NULL;
dictEntry *de;
- FILE *fp;
char tmpfile[256];
int j;
time_t now = time(NULL);
+ FILE *fp;
+ rio rdb;
if (server.ds_enabled) {
cacheForcePointInTime();
strerror(errno));
return REDIS_ERR;
}
- if (fwrite("REDIS0002",9,1,fp) == 0) goto werr;
+
+ rdb = rioInitWithFile(fp);
+ if (rdbWriteRaw(&rdb,"REDIS0002",9) == -1) goto werr;
+
for (j = 0; j < server.dbnum; j++) {
redisDb *db = server.db+j;
dict *d = db->dict;
}
/* Write the SELECT DB opcode */
- if (rdbSaveType(fp,REDIS_SELECTDB) == -1) goto werr;
- if (rdbSaveLen(fp,j) == -1) goto werr;
+ if (rdbSaveType(&rdb,REDIS_SELECTDB) == -1) goto werr;
+ if (rdbSaveLen(&rdb,j) == -1) goto werr;
/* Iterate this DB writing every entry */
while((de = dictNext(di)) != NULL) {
initStaticStringObject(key,keystr);
expire = getExpire(db,&key);
- if (rdbSaveKeyValuePair(fp,&key,o,expire,now) == -1) goto werr;
+ if (rdbSaveKeyValuePair(&rdb,&key,o,expire,now) == -1) goto werr;
}
dictReleaseIterator(di);
}
/* EOF opcode */
- if (rdbSaveType(fp,REDIS_EOF) == -1) goto werr;
+ if (rdbSaveType(&rdb,REDIS_EOF) == -1) goto werr;
/* Make sure data will not remain on the OS's output buffers */
fflush(fp);
unlink(tmpfile);
}
-int rdbLoadType(FILE *fp) {
+int rdbLoadType(rio *rdb) {
unsigned char type;
- if (fread(&type,1,1,fp) == 0) return -1;
+ if (rioRead(rdb,&type,1) == 0) return -1;
return type;
}
-time_t rdbLoadTime(FILE *fp) {
+time_t rdbLoadTime(rio *rdb) {
int32_t t32;
- if (fread(&t32,4,1,fp) == 0) return -1;
+ if (rioRead(rdb,&t32,4) == 0) return -1;
return (time_t) t32;
}
*
* isencoded is set to 1 if the readed length is not actually a length but
* an "encoding type", check the above comments for more info */
-uint32_t rdbLoadLen(FILE *fp, int *isencoded) {
+uint32_t rdbLoadLen(rio *rdb, int *isencoded) {
unsigned char buf[2];
uint32_t len;
int type;
if (isencoded) *isencoded = 0;
- if (fread(buf,1,1,fp) == 0) return REDIS_RDB_LENERR;
+ if (rioRead(rdb,buf,1) == 0) return REDIS_RDB_LENERR;
type = (buf[0]&0xC0)>>6;
if (type == REDIS_RDB_6BITLEN) {
/* Read a 6 bit len */
return buf[0]&0x3F;
} else if (type == REDIS_RDB_14BITLEN) {
/* Read a 14 bit len */
- if (fread(buf+1,1,1,fp) == 0) return REDIS_RDB_LENERR;
+ if (rioRead(rdb,buf+1,1) == 0) return REDIS_RDB_LENERR;
return ((buf[0]&0x3F)<<8)|buf[1];
} else {
/* Read a 32 bit len */
- if (fread(&len,4,1,fp) == 0) return REDIS_RDB_LENERR;
+ if (rioRead(rdb,&len,4) == 0) return REDIS_RDB_LENERR;
return ntohl(len);
}
}
* encoding type 'enctype'. If encode is true the function may return
* an integer-encoded object as reply, otherwise the returned object
* will always be encoded as a raw string. */
-robj *rdbLoadIntegerObject(FILE *fp, int enctype, int encode) {
+robj *rdbLoadIntegerObject(rio *rdb, int enctype, int encode) {
unsigned char enc[4];
long long val;
if (enctype == REDIS_RDB_ENC_INT8) {
- if (fread(enc,1,1,fp) == 0) return NULL;
+ if (rioRead(rdb,enc,1) == 0) return NULL;
val = (signed char)enc[0];
} else if (enctype == REDIS_RDB_ENC_INT16) {
uint16_t v;
- if (fread(enc,2,1,fp) == 0) return NULL;
+ if (rioRead(rdb,enc,2) == 0) return NULL;
v = enc[0]|(enc[1]<<8);
val = (int16_t)v;
} else if (enctype == REDIS_RDB_ENC_INT32) {
uint32_t v;
- if (fread(enc,4,1,fp) == 0) return NULL;
+ if (rioRead(rdb,enc,4) == 0) return NULL;
v = enc[0]|(enc[1]<<8)|(enc[2]<<16)|(enc[3]<<24);
val = (int32_t)v;
} else {
return createObject(REDIS_STRING,sdsfromlonglong(val));
}
-robj *rdbLoadLzfStringObject(FILE*fp) {
+robj *rdbLoadLzfStringObject(rio *rdb) {
unsigned int len, clen;
unsigned char *c = NULL;
sds val = NULL;
- if ((clen = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
- if ((len = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((clen = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((len = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
if ((c = zmalloc(clen)) == NULL) goto err;
if ((val = sdsnewlen(NULL,len)) == NULL) goto err;
- if (fread(c,clen,1,fp) == 0) goto err;
+ if (rioRead(rdb,c,clen) == 0) goto err;
if (lzf_decompress(c,clen,val,len) == 0) goto err;
zfree(c);
return createObject(REDIS_STRING,val);
return NULL;
}
-robj *rdbGenericLoadStringObject(FILE*fp, int encode) {
+robj *rdbGenericLoadStringObject(rio *rdb, int encode) {
int isencoded;
uint32_t len;
sds val;
- len = rdbLoadLen(fp,&isencoded);
+ len = rdbLoadLen(rdb,&isencoded);
if (isencoded) {
switch(len) {
case REDIS_RDB_ENC_INT8:
case REDIS_RDB_ENC_INT16:
case REDIS_RDB_ENC_INT32:
- return rdbLoadIntegerObject(fp,len,encode);
+ return rdbLoadIntegerObject(rdb,len,encode);
case REDIS_RDB_ENC_LZF:
- return rdbLoadLzfStringObject(fp);
+ return rdbLoadLzfStringObject(rdb);
default:
redisPanic("Unknown RDB encoding type");
}
if (len == REDIS_RDB_LENERR) return NULL;
val = sdsnewlen(NULL,len);
- if (len && fread(val,len,1,fp) == 0) {
+ if (len && rioRead(rdb,val,len) == 0) {
sdsfree(val);
return NULL;
}
return createObject(REDIS_STRING,val);
}
-robj *rdbLoadStringObject(FILE *fp) {
- return rdbGenericLoadStringObject(fp,0);
+robj *rdbLoadStringObject(rio *rdb) {
+ return rdbGenericLoadStringObject(rdb,0);
}
-robj *rdbLoadEncodedStringObject(FILE *fp) {
- return rdbGenericLoadStringObject(fp,1);
+robj *rdbLoadEncodedStringObject(rio *rdb) {
+ return rdbGenericLoadStringObject(rdb,1);
}
/* For information about double serialization check rdbSaveDoubleValue() */
-int rdbLoadDoubleValue(FILE *fp, double *val) {
+int rdbLoadDoubleValue(rio *rdb, double *val) {
char buf[128];
unsigned char len;
- if (fread(&len,1,1,fp) == 0) return -1;
+ if (rioRead(rdb,&len,1) == 0) return -1;
switch(len) {
case 255: *val = R_NegInf; return 0;
case 254: *val = R_PosInf; return 0;
case 253: *val = R_Nan; return 0;
default:
- if (fread(buf,len,1,fp) == 0) return -1;
+ if (rioRead(rdb,buf,len) == 0) return -1;
buf[len] = '\0';
sscanf(buf, "%lg", val);
return 0;
/* Load a Redis object of the specified type from the specified file.
* On success a newly allocated object is returned, otherwise NULL. */
-robj *rdbLoadObject(int type, FILE *fp) {
+robj *rdbLoadObject(int type, rio *rdb) {
robj *o, *ele, *dec;
size_t len;
unsigned int i;
- redisLog(REDIS_DEBUG,"LOADING OBJECT %d (at %d)\n",type,ftell(fp));
+ redisLog(REDIS_DEBUG,"LOADING OBJECT %d (at %d)\n",type,rdb->tell(rdb));
if (type == REDIS_STRING) {
/* Read string value */
- if ((o = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
+ if ((o = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
o = tryObjectEncoding(o);
} else if (type == REDIS_LIST) {
/* Read list value */
- if ((len = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((len = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
/* Use a real list when there are too many entries */
if (len > server.list_max_ziplist_entries) {
/* Load every single element of the list */
while(len--) {
- if ((ele = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
+ if ((ele = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
/* If we are using a ziplist and the value is too big, convert
* the object to a real list. */
}
} else if (type == REDIS_SET) {
/* Read list/set value */
- if ((len = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((len = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
/* Use a regular set when there are too many entries. */
if (len > server.set_max_intset_entries) {
/* Load every single element of the list/set */
for (i = 0; i < len; i++) {
long long llval;
- if ((ele = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
+ if ((ele = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
ele = tryObjectEncoding(ele);
if (o->encoding == REDIS_ENCODING_INTSET) {
size_t maxelelen = 0;
zset *zs;
- if ((zsetlen = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((zsetlen = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
o = createZsetObject();
zs = o->ptr;
double score;
zskiplistNode *znode;
- if ((ele = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
+ if ((ele = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
ele = tryObjectEncoding(ele);
- if (rdbLoadDoubleValue(fp,&score) == -1) return NULL;
+ if (rdbLoadDoubleValue(rdb,&score) == -1) return NULL;
/* Don't care about integer-encoded strings. */
if (ele->encoding == REDIS_ENCODING_RAW &&
} else if (type == REDIS_HASH) {
size_t hashlen;
- if ((hashlen = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
+ if ((hashlen = rdbLoadLen(rdb,NULL)) == REDIS_RDB_LENERR) return NULL;
o = createHashObject();
/* Too many entries? Use an hash table. */
if (hashlen > server.hash_max_zipmap_entries)
while(hashlen--) {
robj *key, *val;
- if ((key = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
- if ((val = rdbLoadEncodedStringObject(fp)) == NULL) return NULL;
+ if ((key = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
+ if ((val = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
/* If we are using a zipmap and there are too big values
* the object is converted to real hash table encoding. */
if (o->encoding != REDIS_ENCODING_HT &&
type == REDIS_SET_INTSET ||
type == REDIS_ZSET_ZIPLIST)
{
- robj *aux = rdbLoadStringObject(fp);
+ robj *aux = rdbLoadStringObject(rdb);
if (aux == NULL) return NULL;
o = createObject(REDIS_STRING,NULL); /* string is just placeholder */
}
int rdbLoad(char *filename) {
- FILE *fp;
uint32_t dbid;
int type, retval, rdbver;
redisDb *db = server.db+0;
char buf[1024];
time_t expiretime, now = time(NULL);
long loops = 0;
+ FILE *fp;
+ rio rdb;
fp = fopen(filename,"r");
if (!fp) return REDIS_ERR;
}
startLoading(fp);
+ rdb = rioInitWithFile(fp);
while(1) {
robj *key, *val;
expiretime = -1;
/* Serve the clients from time to time */
if (!(loops++ % 1000)) {
- loadingProgress(ftello(fp));
+ loadingProgress(rdb.tell(&rdb));
aeProcessEvents(server.el, AE_FILE_EVENTS|AE_DONT_WAIT);
}
/* Read type. */
- if ((type = rdbLoadType(fp)) == -1) goto eoferr;
+ if ((type = rdbLoadType(&rdb)) == -1) goto eoferr;
if (type == REDIS_EXPIRETIME) {
- if ((expiretime = rdbLoadTime(fp)) == -1) goto eoferr;
+ if ((expiretime = rdbLoadTime(&rdb)) == -1) goto eoferr;
/* We read the time so we need to read the object type again */
- if ((type = rdbLoadType(fp)) == -1) goto eoferr;
+ if ((type = rdbLoadType(&rdb)) == -1) goto eoferr;
}
if (type == REDIS_EOF) break;
/* Handle SELECT DB opcode as a special case */
if (type == REDIS_SELECTDB) {
- if ((dbid = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR)
+ if ((dbid = rdbLoadLen(&rdb,NULL)) == REDIS_RDB_LENERR)
goto eoferr;
if (dbid >= (unsigned)server.dbnum) {
redisLog(REDIS_WARNING,"FATAL: Data file was created with a Redis server configured to handle more than %d databases. Exiting\n", server.dbnum);
continue;
}
/* Read key */
- if ((key = rdbLoadStringObject(fp)) == NULL) goto eoferr;
+ if ((key = rdbLoadStringObject(&rdb)) == NULL) goto eoferr;
/* Read value */
- if ((val = rdbLoadObject(type,fp)) == NULL) goto eoferr;
+ if ((val = rdbLoadObject(type,&rdb)) == NULL) goto eoferr;
/* Check if the key already expired */
if (expiretime != -1 && expiretime < now) {
decrRefCount(key);
projects / redis.git / commitdiff
