#include "redis.h"
#include <sys/uio.h>
+static void setProtocolError(redisClient *c, int pos);
+
void *dupClientReplyValue(void *o) {
incrRefCount((robj*)o);
return o;
c->authenticated = 0;
c->replstate = REDIS_REPL_NONE;
c->reply = listCreate();
+ c->reply_bytes = 0;
listSetFreeMethod(c->reply,decrRefCount);
listSetDupMethod(c->reply,dupClientReplyValue);
c->bpop.keys = NULL;
listAddNodeTail(c->reply,o);
}
}
+ c->reply_bytes += sdslen(o->ptr);
}
/* This method takes responsibility over the sds. When it is no longer
return;
}
+ c->reply_bytes += sdslen(s);
if (listLength(c->reply) == 0) {
listAddNodeTail(c->reply,createObject(REDIS_STRING,s));
} else {
listAddNodeTail(c->reply,createStringObject(s,len));
}
}
+ c->reply_bytes += len;
}
/* -----------------------------------------------------------------------------
len = listNodeValue(ln);
len->ptr = sdscatprintf(sdsempty(),"*%ld\r\n",length);
+ c->reply_bytes += sdslen(len->ptr);
if (ln->next != NULL) {
next = listNodeValue(ln->next);
addReplyBulkCBuffer(c,buf,len);
}
+/* Copy 'src' client output buffers into 'dst' client output buffers.
+ * The function takes care of freeing the old output buffers of the
+ * destination client. */
+void copyClientOutputBuffer(redisClient *dst, redisClient *src) {
+ listRelease(dst->reply);
+ dst->reply = listDup(src->reply);
+ memcpy(dst->buf,src->buf,src->bufpos);
+ dst->bufpos = src->bufpos;
+ dst->reply_bytes = src->reply_bytes;
+}
+
static void acceptCommonHandler(int fd) {
redisClient *c;
if ((c = createClient(fd)) == NULL) {
void freeClient(redisClient *c) {
listNode *ln;
+ /* If this is marked as current client unset it */
+ if (server.current_client == c) server.current_client = NULL;
+
/* Note that if the client we are freeing is blocked into a blocking
* call, we have to set querybuf to NULL *before* to call
* unblockClientWaitingData() to avoid processInputBuffer() will get
/* Case 2: we lost the connection with the master. */
if (c->flags & REDIS_MASTER) {
server.master = NULL;
- server.replstate = REDIS_REPL_CONNECT;
+ server.repl_state = REDIS_REPL_CONNECT;
server.repl_down_since = time(NULL);
/* Since we lost the connection with the master, we should also
* close the connection with all our slaves if we have any, so
if (c->sentlen == objlen) {
listDelNode(c->reply,listFirst(c->reply));
c->sentlen = 0;
+ c->reply_bytes -= objlen;
}
}
/* Note that we avoid to send more thank REDIS_MAX_WRITE_PER_EVENT
size_t querylen;
/* Nothing to do without a \r\n */
- if (newline == NULL)
+ if (newline == NULL) {
+ if (sdslen(c->querybuf) > REDIS_INLINE_MAX_SIZE) {
+ addReplyError(c,"Protocol error: too big inline request");
+ setProtocolError(c,0);
+ }
return REDIS_ERR;
+ }
/* Split the input buffer up to the \r\n */
querylen = newline-(c->querybuf);
/* Multi bulk length cannot be read without a \r\n */
newline = strchr(c->querybuf,'\r');
- if (newline == NULL)
+ if (newline == NULL) {
+ if (sdslen(c->querybuf) > REDIS_INLINE_MAX_SIZE) {
+ addReplyError(c,"Protocol error: too big mbulk count string");
+ setProtocolError(c,0);
+ }
return REDIS_ERR;
+ }
/* Buffer should also contain \n */
if (newline-(c->querybuf) > ((signed)sdslen(c->querybuf)-2))
/* Read bulk length if unknown */
if (c->bulklen == -1) {
newline = strchr(c->querybuf+pos,'\r');
- if (newline == NULL)
+ if (newline == NULL) {
+ if (sdslen(c->querybuf) > REDIS_INLINE_MAX_SIZE) {
+ addReplyError(c,"Protocol error: too big bulk count string");
+ setProtocolError(c,0);
+ }
break;
+ }
/* Buffer should also contain \n */
if (newline-(c->querybuf) > ((signed)sdslen(c->querybuf)-2))
if (pos) c->querybuf = sdsrange(c->querybuf,pos,-1);
/* We're done when c->multibulk == 0 */
- if (c->multibulklen == 0) {
- return REDIS_OK;
- }
+ if (c->multibulklen == 0) return REDIS_OK;
+
+ /* Still not read to process the command */
return REDIS_ERR;
}
REDIS_NOTUSED(el);
REDIS_NOTUSED(mask);
+ server.current_client = c;
readlen = REDIS_IOBUF_LEN;
/* If this is a multi bulk request, and we are processing a bulk reply
* that is large enough, try to maximize the probabilty that the query
sdsIncrLen(c->querybuf,nread);
c->lastinteraction = time(NULL);
} else {
+ server.current_client = NULL;
return;
}
if (sdslen(c->querybuf) > server.client_max_querybuf_len) {
return;
}
processInputBuffer(c);
+ server.current_client = NULL;
}
void getClientsMaxBuffers(unsigned long *longest_output_list,
if (emask & AE_WRITABLE) *p++ = 'w';
*p = '\0';
return sdscatprintf(sdsempty(),
- "addr=%s:%d fd=%d idle=%ld flags=%s db=%d sub=%d psub=%d qbuf=%lu obl=%lu oll=%lu events=%s cmd=%s",
+ "addr=%s:%d fd=%d idle=%ld flags=%s db=%d sub=%d psub=%d qbuf=%lu obl=%lu oll=%lu omem=%lu events=%s cmd=%s",
ip,port,client->fd,
(long)(now - client->lastinteraction),
flags,
(unsigned long) sdslen(client->querybuf),
(unsigned long) client->bufpos,
(unsigned long) listLength(client->reply),
+ getClientOutputBufferMemoryUsage(client),
events,
client->lastcmd ? client->lastcmd->name : "NULL");
}
listRewind(server.clients,&li);
while ((ln = listNext(&li)) != NULL) {
+ sds cs;
+
client = listNodeValue(ln);
- o = sdscatsds(o,getClientInfoString(client));
+ cs = getClientInfoString(client);
+ o = sdscatsds(o,cs);
+ sdsfree(cs);
o = sdscatlen(o,"\n",1);
}
return o;
redisAssertWithInfo(c,NULL,c->cmd != NULL);
}
}
+
+/* This function returns the number of bytes that Redis is virtually
+ * using to store the reply still not read by the client.
+ * It is "virtual" since the reply output list may contain objects that
+ * are shared and are not really using additional memory.
+ *
+ * The function returns the total sum of the length of all the objects
+ * stored in the output list, plus the memory used to allocate every
+ * list node. The static reply buffer is not taken into account since it
+ * is allocated anyway.
+ *
+ * Note: this function is very fast so can be called as many time as
+ * the caller wishes. The main usage of this function currently is
+ * enforcing the client output lenght limits. */
+unsigned long getClientOutputBufferMemoryUsage(redisClient *c) {
+ unsigned long list_item_size = sizeof(listNode);
+
+ return c->reply_bytes + (list_item_size*listLength(c->reply));
+}
+
+/* Get the class of a client, used in order to envorce limits to different
+ * classes of clients.
+ *
+ * The function will return one of the following:
+ * REDIS_CLIENT_LIMIT_CLASS_NORMAL -> Normal client
+ * REDIS_CLIENT_LIMIT_CLASS_SLAVE -> Slave or client executing MONITOR command
+ * REDIS_CLIENT_LIMIT_CLASS_PUBSUB -> Client subscribed to Pub/Sub channels
+ */
+int getClientLimitClass(redisClient *c) {
+ if (c->flags & REDIS_SLAVE) return REDIS_CLIENT_LIMIT_CLASS_SLAVE;
+ if (dictSize(c->pubsub_channels) || listLength(c->pubsub_patterns))
+ return REDIS_CLIENT_LIMIT_CLASS_PUBSUB;
+ return REDIS_CLIENT_LIMIT_CLASS_NORMAL;
+}
projects / redis.git / blobdiff