X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/dbb27a0a90ca3800f5be1d8170e404b9e7b9bc44..60ef787efad8be46afa29ec751532e3ea7ebd70c:/src/redis-cli.c diff --git a/src/redis-cli.c b/src/redis-cli.c index 827e4061..bdaa3964 100644 --- a/src/redis-cli.c +++ b/src/redis-cli.c @@ -49,6 +49,10 @@ #define REDIS_NOTUSED(V) ((void) V) +#define OUTPUT_STANDARD 0 +#define OUTPUT_RAW 1 +#define OUTPUT_CSV 2 + static redisContext *context; static struct config { char *hostip; @@ -64,9 +68,10 @@ static struct config { int latency_mode; int cluster_mode; int cluster_reissue_command; + int slave_mode; int stdinarg; /* get last arg from stdin. (-x option) */ char *auth; - int raw_output; /* output mode per command */ + int output; /* output mode, see OUTPUT_* defines */ sds mb_delim; char prompt[128]; char *eval; @@ -434,10 +439,46 @@ static sds cliFormatReplyRaw(redisReply *r) { return out; } +static sds cliFormatReplyCSV(redisReply *r) { + unsigned int i; + + sds out = sdsempty(); + switch (r->type) { + case REDIS_REPLY_ERROR: + out = sdscat(out,"ERROR,"); + out = sdscatrepr(out,r->str,strlen(r->str)); + break; + case REDIS_REPLY_STATUS: + out = sdscatrepr(out,r->str,r->len); + break; + case REDIS_REPLY_INTEGER: + out = sdscatprintf(out,"%lld",r->integer); + break; + case REDIS_REPLY_STRING: + out = sdscatrepr(out,r->str,r->len); + break; + case REDIS_REPLY_NIL: + out = sdscat(out,"NIL\n"); + break; + case REDIS_REPLY_ARRAY: + for (i = 0; i < r->elements; i++) { + sds tmp = cliFormatReplyCSV(r->element[i]); + out = sdscatlen(out,tmp,sdslen(tmp)); + if (i != r->elements-1) out = sdscat(out,","); + sdsfree(tmp); + } + break; + default: + fprintf(stderr,"Unknown reply type: %d\n", r->type); + exit(1); + } + return out; +} + static int cliReadReply(int output_raw_strings) { void *_reply; redisReply *reply; - sds out; + sds out = NULL; int output = 1; if (redisGetReply(context,&_reply) != REDIS_OK) { @@ -457,7 +498,8 @@ static int cliReadReply(int output_raw_strings) { reply = (redisReply*)_reply; - /* Check if we need to connect to a different node and reissue the request. */ + /* Check if we need to connect to a different node and reissue the + * request. */ if (config.cluster_mode && reply->type == REDIS_REPLY_ERROR && (!strncmp(reply->str,"MOVED",5) || !strcmp(reply->str,"ASK"))) { @@ -489,11 +531,14 @@ static int cliReadReply(int output_raw_strings) { if (output_raw_strings) { out = cliFormatReplyRaw(reply); } else { - if (config.raw_output) { + if (config.output == OUTPUT_RAW) { out = cliFormatReplyRaw(reply); out = sdscat(out,"\n"); - } else { + } else if (config.output == OUTPUT_STANDARD) { out = cliFormatReplyTTY(reply,""); + } else if (config.output == OUTPUT_CSV) { + out = cliFormatReplyCSV(reply); + out = sdscat(out,"\n"); } } fwrite(out,sdslen(out),1,stdout); @@ -545,7 +590,7 @@ static int cliSendCommand(int argc, char **argv, int repeat) { } if (config.pubsub_mode) { - if (!config.raw_output) + if (config.output != OUTPUT_RAW) printf("Reading messages... (press Ctrl-C to quit)\n"); while (1) { if (cliReadReply(output_raw) != REDIS_OK) exit(1); @@ -603,9 +648,13 @@ static int parseOptions(int argc, char **argv) { } else if (!strcmp(argv[i],"-a") && !lastarg) { config.auth = argv[++i]; } else if (!strcmp(argv[i],"--raw")) { - config.raw_output = 1; + config.output = OUTPUT_RAW; + } else if (!strcmp(argv[i],"--csv")) { + config.output = OUTPUT_CSV; } else if (!strcmp(argv[i],"--latency")) { config.latency_mode = 1; + } else if (!strcmp(argv[i],"--slave")) { + config.slave_mode = 1; } else if (!strcmp(argv[i],"--eval") && !lastarg) { config.eval = argv[++i]; } else if (!strcmp(argv[i],"-c")) { @@ -661,6 +710,7 @@ static void usage() { " -c Enable cluster mode (follow -ASK and -MOVED redirections)\n" " --raw Use raw formatting for replies (default when STDOUT is not a tty)\n" " --latency Enter a special mode continuously sampling latency.\n" +" --slave Simulate a slave showing commands received from the master.\n" " --eval Send an EVAL command using the Lua script at .\n" " --help Output this help and exit\n" " --version Output version and exit\n" @@ -866,6 +916,54 @@ static void latencyMode(void) { } } +static void slaveMode(void) { + /* To start we need to send the SYNC command and return the payload. + * The hiredis client lib does not understand this part of the protocol + * and we don't want to mess with its buffers, so everything is performed + * using direct low-level I/O. */ + int fd = context->fd; + char buf[1024], *p; + ssize_t nread; + unsigned long long payload; + + /* Send the SYNC command. */ + if (write(fd,"SYNC\r\n",6) != 6) { + fprintf(stderr,"Error writing to master\n"); + exit(1); + } + + /* Read $\r\n, making sure to read just up to "\n" */ + p = buf; + while(1) { + nread = read(fd,p,1); + if (nread <= 0) { + fprintf(stderr,"Error reading bulk length while SYNCing\n"); + exit(1); + } + if (*p == '\n') break; + p++; + } + *p = '\0'; + payload = strtoull(buf+1,NULL,10); + fprintf(stderr,"SYNC with master, discarding %lld bytes of bulk tranfer...\n", + payload); + + /* Discard the payload. */ + while(payload) { + nread = read(fd,buf,(payload > sizeof(buf)) ? sizeof(buf) : payload); + if (nread <= 0) { + fprintf(stderr,"Error reading RDB payload while SYNCing\n"); + exit(1); + } + payload -= nread; + } + fprintf(stderr,"SYNC done. Logging commands from master.\n"); + + /* Now we can use the hiredis to read the incoming protocol. */ + config.output = OUTPUT_CSV; + while (cliReadReply(0) == REDIS_OK); +} + int main(int argc, char **argv) { int firstarg; @@ -884,7 +982,10 @@ int main(int argc, char **argv) { config.stdinarg = 0; config.auth = NULL; config.eval = NULL; - config.raw_output = !isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL); + if (!isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL)) + config.output = OUTPUT_RAW; + else + config.output = OUTPUT_STANDARD; config.mb_delim = sdsnew("\n"); cliInitHelp(); @@ -898,6 +999,12 @@ int main(int argc, char **argv) { latencyMode(); } + /* Start in slave mode if appropriate */ + if (config.slave_mode) { + cliConnect(0); + slaveMode(); + } + /* Start interactive mode when no command is provided */ if (argc == 0 && !config.eval) { /* Note that in repl mode we don't abort on connection error.