#include <inttypes.h>
#include <pthread.h>
#include <syslog.h>
+#include <netinet/in.h>
#include "ae.h" /* Event driven programming library */
#include "sds.h" /* Dynamic safe strings */
#include "ziplist.h" /* Compact list data structure */
#include "intset.h" /* Compact integer set structure */
#include "version.h"
+#include "util.h"
/* Error codes */
#define REDIS_OK 0
#define REDIS_ZSET 3
#define REDIS_HASH 4
#define REDIS_VMPOINTER 8
+
/* Object types only used for persistence in .rdb files */
#define REDIS_HASH_ZIPMAP 9
#define REDIS_LIST_ZIPLIST 10
#define REDIS_SET_INTSET 11
+#define REDIS_ZSET_ZIPLIST 12
/* Objects encoding. Some kind of objects like Strings and Hashes can be
* internally represented in multiple ways. The 'encoding' field of the object
#define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
#define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
#define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
+#define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
/* Object types only used for dumping to disk */
#define REDIS_EXPIRETIME 253
#define REDIS_VERBOSE 1
#define REDIS_NOTICE 2
#define REDIS_WARNING 3
+#define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
/* Anti-warning macro... */
#define REDIS_NOTUSED(V) ((void) V)
#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
#define REDIS_LIST_MAX_ZIPLIST_VALUE 64
#define REDIS_SET_MAX_INTSET_ENTRIES 512
+#define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
+#define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
/* Sets operations codes */
#define REDIS_OP_UNION 0
*integers[REDIS_SHARED_INTEGERS];
};
-/* Global server state structure */
+/* ZSETs use a specialized version of Skiplists */
+typedef struct zskiplistNode {
+ robj *obj;
+ double score;
+ struct zskiplistNode *backward;
+ struct zskiplistLevel {
+ struct zskiplistNode *forward;
+ unsigned int span;
+ } level[];
+} zskiplistNode;
+
+typedef struct zskiplist {
+ struct zskiplistNode *header, *tail;
+ unsigned long length;
+ int level;
+} zskiplist;
+
+typedef struct zset {
+ dict *dict;
+ zskiplist *zsl;
+} zset;
+
+/*-----------------------------------------------------------------------------
+ * Redis cluster data structures
+ *----------------------------------------------------------------------------*/
+
+#define REDIS_CLUSTER_SLOTS 4096
+#define REDIS_CLUSTER_OK 0 /* Everything looks ok */
+#define REDIS_CLUSTER_FAIL 1 /* The cluster can't work */
+#define REDIS_CLUSTER_NEEDHELP 2 /* The cluster works, but needs some help */
+#define REDIS_CLUSTER_NAMELEN 40 /* sha1 hex length */
+#define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
+
+struct clusterNode;
+
+/* clusterLink encapsulates everything needed to talk with a remote node. */
+typedef struct clusterLink {
+ int fd; /* TCP socket file descriptor */
+ sds sndbuf; /* Packet send buffer */
+ sds rcvbuf; /* Packet reception buffer */
+ struct clusterNode *node; /* Node related to this link if any, or NULL */
+} clusterLink;
+
+/* Node flags */
+#define REDIS_NODE_MASTER 1 /* The node is a master */
+#define REDIS_NODE_SLAVE 2 /* The node is a slave */
+#define REDIS_NODE_PFAIL 4 /* Failure? Need acknowledge */
+#define REDIS_NODE_FAIL 8 /* The node is believed to be malfunctioning */
+#define REDIS_NODE_MYSELF 16 /* This node is myself */
+#define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
+#define REDIS_NODE_NOADDR 64 /* We don't know the address of this node */
+#define REDIS_NODE_MEET 128 /* Send a MEET message to this node */
+#define REDIS_NODE_NULL_NAME "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
+
+struct clusterNode {
+ char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
+ int flags; /* REDIS_NODE_... */
+ unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
+ int numslaves; /* Number of slave nodes, if this is a master */
+ struct clusterNode **slaves; /* pointers to slave nodes */
+ struct clusterNode *slaveof; /* pointer to the master node */
+ time_t ping_sent; /* Unix time we sent latest ping */
+ time_t pong_received; /* Unix time we received the pong */
+ char *configdigest; /* Configuration digest of this node */
+ time_t configdigest_ts; /* Configuration digest timestamp */
+ char ip[16]; /* Latest known IP address of this node */
+ int port; /* Latest known port of this node */
+ clusterLink *link; /* TCP/IP link with this node */
+};
+typedef struct clusterNode clusterNode;
+
+typedef struct {
+ char *configfile;
+ clusterNode *myself; /* This node */
+ int state; /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
+ int node_timeout;
+ dict *nodes; /* Hash table of name -> clusterNode structures */
+ clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
+ clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
+ clusterNode *slots[REDIS_CLUSTER_SLOTS];
+ zskiplist *slots_to_keys;
+} clusterState;
+
+/* Redis cluster messages header */
+
+/* Note that the PING, PONG and MEET messages are actually the same exact
+ * kind of packet. PONG is the reply to ping, in the extact format as a PING,
+ * while MEET is a special PING that forces the receiver to add the sender
+ * as a node (if it is not already in the list). */
+#define CLUSTERMSG_TYPE_PING 0 /* Ping */
+#define CLUSTERMSG_TYPE_PONG 1 /* Pong (reply to Ping) */
+#define CLUSTERMSG_TYPE_MEET 2 /* Meet "let's join" message */
+#define CLUSTERMSG_TYPE_FAIL 3 /* Mark node xxx as failing */
+
+/* Initially we don't know our "name", but we'll find it once we connect
+ * to the first node, using the getsockname() function. Then we'll use this
+ * address for all the next messages. */
+typedef struct {
+ char nodename[REDIS_CLUSTER_NAMELEN];
+ uint32_t ping_sent;
+ uint32_t pong_received;
+ char ip[16]; /* IP address last time it was seen */
+ uint16_t port; /* port last time it was seen */
+ uint16_t flags;
+ uint32_t notused; /* for 64 bit alignment */
+} clusterMsgDataGossip;
+
+typedef struct {
+ char nodename[REDIS_CLUSTER_NAMELEN];
+} clusterMsgDataFail;
+
+union clusterMsgData {
+ /* PING, MEET and PONG */
+ struct {
+ /* Array of N clusterMsgDataGossip structures */
+ clusterMsgDataGossip gossip[1];
+ } ping;
+ /* FAIL */
+ struct {
+ clusterMsgDataFail about;
+ } fail;
+};
+
+typedef struct {
+ uint32_t totlen; /* Total length of this message */
+ uint16_t type; /* Message type */
+ uint16_t count; /* Only used for some kind of messages. */
+ char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
+ unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
+ char slaveof[REDIS_CLUSTER_NAMELEN];
+ char configdigest[32];
+ uint16_t port; /* Sender TCP base port */
+ unsigned char state; /* Cluster state from the POV of the sender */
+ unsigned char notused[5]; /* Reserved for future use. For alignment. */
+ union clusterMsgData data;
+} clusterMsg;
+
+/*-----------------------------------------------------------------------------
+ * Global server state
+ *----------------------------------------------------------------------------*/
+
struct redisServer {
/* General */
pthread_t mainthread;
char *unixsocket;
int ipfd;
int sofd;
+ int cfd;
list *clients;
list *slaves, *monitors;
char neterr[ANET_ERR_LEN];
long long stat_evictedkeys; /* number of evicted keys (maxmemory) */
long long stat_keyspace_hits; /* number of successful lookups of keys */
long long stat_keyspace_misses; /* number of failed lookups of keys */
+ size_t stat_peak_memory; /* max used memory record */
/* Configuration */
int verbosity;
int maxidletime;
size_t list_max_ziplist_entries;
size_t list_max_ziplist_value;
size_t set_max_intset_entries;
+ size_t zset_max_ziplist_entries;
+ size_t zset_max_ziplist_value;
time_t unixtime; /* Unix time sampled every second. */
/* Virtual memory I/O threads stuff */
/* An I/O thread process an element taken from the io_jobs queue and
/* Misc */
unsigned lruclock:22; /* clock incrementing every minute, for LRU */
unsigned lruclock_padding:10;
+ /* Cluster */
+ int cluster_enabled;
+ clusterState cluster;
};
typedef struct pubsubPattern {
robj *pattern;
} redisSortOperation;
-/* ZSETs use a specialized version of Skiplists */
-typedef struct zskiplistNode {
- robj *obj;
- double score;
- struct zskiplistNode *backward;
- struct zskiplistLevel {
- struct zskiplistNode *forward;
- unsigned int span;
- } level[];
-} zskiplistNode;
-
-typedef struct zskiplist {
- struct zskiplistNode *header, *tail;
- unsigned long length;
- int level;
-} zskiplist;
-
-typedef struct zset {
- dict *dict;
- zskiplist *zsl;
-} zset;
-
/* DIsk store threaded I/O request message */
#define REDIS_IOJOB_LOAD 0
#define REDIS_IOJOB_SAVE 1
extern struct sharedObjectsStruct shared;
extern dictType setDictType;
extern dictType zsetDictType;
+extern dictType clusterNodesDictType;
extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
dictType hashDictType;
robj *createObject(int type, void *ptr);
robj *createStringObject(char *ptr, size_t len);
robj *dupStringObject(robj *o);
+int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
robj *tryObjectEncoding(robj *o);
robj *getDecodedObject(robj *o);
size_t stringObjectLen(robj *o);
robj *createIntsetObject(void);
robj *createHashObject(void);
robj *createZsetObject(void);
+robj *createZsetZiplistObject(void);
int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
int checkType(redisClient *c, robj *o, int type);
int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
int fwriteBulkDouble(FILE *fp, double d);
int fwriteBulkLongLong(FILE *fp, long long l);
int fwriteBulkObject(FILE *fp, robj *obj);
+int fwriteBulkCount(FILE *fp, char prefix, int count);
/* Replication */
void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
void backgroundRewriteDoneHandler(int exitcode, int bysignal);
/* Sorted sets data type */
+
+/* Struct to hold a inclusive/exclusive range spec. */
+typedef struct {
+ double min, max;
+ int minex, maxex; /* are min or max exclusive? */
+} zrangespec;
+
zskiplist *zslCreate(void);
void zslFree(zskiplist *zsl);
zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
+unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
+int zslDelete(zskiplist *zsl, double score, robj *obj);
+zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
+double zzlGetScore(unsigned char *sptr);
+void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
+void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
+unsigned int zsetLength(robj *zobj);
+void zsetConvert(robj *zobj, int encoding);
/* Core functions */
void freeMemoryIfNeeded(void);
void freePubsubPattern(void *p);
int listMatchPubsubPattern(void *a, void *b);
-/* Utility functions */
-int stringmatchlen(const char *pattern, int patternLen,
- const char *string, int stringLen, int nocase);
-int stringmatch(const char *pattern, const char *string, int nocase);
-long long memtoll(const char *p, int *err);
-int ll2string(char *s, size_t len, long long value);
-int isStringRepresentableAsLong(sds s, long *longval);
-int isStringRepresentableAsLongLong(sds s, long long *longval);
-int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
-
/* Configuration */
void loadServerConfig(char *filename);
void appendServerSaveParams(time_t seconds, int changes);
int selectDb(redisClient *c, int id);
void signalModifiedKey(redisDb *db, robj *key);
void signalFlushedDb(int dbid);
+unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
/* API to get key arguments from commands */
#define REDIS_GETKEYS_ALL 0
int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
+/* Cluster */
+void clusterInit(void);
+unsigned short crc16(const char *buf, int len);
+unsigned int keyHashSlot(char *key, int keylen);
+clusterNode *createClusterNode(char *nodename, int flags);
+int clusterAddNode(clusterNode *node);
+void clusterCron(void);
+clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
+
/* Git SHA1 */
char *redisGitSHA1(void);
char *redisGitDirty(void);
void publishCommand(redisClient *c);
void watchCommand(redisClient *c);
void unwatchCommand(redisClient *c);
+void clusterCommand(redisClient *c);
+void restoreCommand(redisClient *c);
+void migrateCommand(redisClient *c);
+void dumpCommand(redisClient *c);
+void objectCommand(redisClient *c);
+void clientCommand(redisClient *c);
#if defined(__GNUC__)
void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
projects / redis.git / blobdiff