X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fwrite_redis.c;h=bafbfe511930fc30e70ff513019e9cb0c4dc8f95;hb=a4b9c9ad2d77656892026ad4b51f9fb7c2a58149;hp=5dd674cf24796b4c78de42378a92dccf981be0b6;hpb=c1219a1c9db2e8400e2ee94b87f86ccd441485d5;p=collectd.git

diff --git a/src/write_redis.c b/src/write_redis.c
index 5dd674cf..bafbfe51 100644
--- a/src/write_redis.c
+++ b/src/write_redis.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/write_redis.c
- * Copyright (C) 2010  Florian Forster
+ * Copyright (C) 2010-2015  Florian Forster
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -25,12 +25,16 @@
  **/
 
 #include "collectd.h"
+
 #include "plugin.h"
 #include "common.h"
-#include "configfile.h"
 
-#include <pthread.h>
-#include <credis.h>
+#include <sys/time.h>
+#include <hiredis/hiredis.h>
+
+#ifndef REDIS_DEFAULT_PREFIX
+# define REDIS_DEFAULT_PREFIX "collectd/"
+#endif
 
 struct wr_node_s
 {
@@ -38,9 +42,13 @@ struct wr_node_s
 
   char *host;
   int port;
-  int timeout;
+  struct timeval timeout;
+  char *prefix;
+  int database;
+  int max_set_size;
+  _Bool store_rates;
 
-  REDIS conn;
+  redisContext *conn;
   pthread_mutex_t lock;
 };
 typedef struct wr_node_s wr_node_t;
@@ -55,21 +63,24 @@ static int wr_write (const data_set_t *ds, /* {{{ */
   wr_node_t *node = ud->data;
   char ident[512];
   char key[512];
-  char value[512];
+  char value[512] = { 0 };
+  char time[24];
   size_t value_size;
   char *value_ptr;
   int status;
+  redisReply   *rr;
 
   status = FORMAT_VL (ident, sizeof (ident), vl);
   if (status != 0)
     return (status);
-  ssnprintf (key, sizeof (key), "collectd/%s", ident);
+  ssnprintf (key, sizeof (key), "%s%s",
+      (node->prefix != NULL) ? node->prefix : REDIS_DEFAULT_PREFIX,
+      ident);
+  ssnprintf (time, sizeof (time), "%.9f", CDTIME_T_TO_DOUBLE(vl->time));
 
-  memset (value, 0, sizeof (value));
   value_size = sizeof (value);
   value_ptr = &value[0];
-
-  status = format_values (value_ptr, value_size, ds, vl, /* store rates = */ 0);
+  status = format_values (value_ptr, value_size, ds, vl, node->store_rates);
   if (status != 0)
     return (status);
 
@@ -77,23 +88,57 @@ static int wr_write (const data_set_t *ds, /* {{{ */
 
   if (node->conn == NULL)
   {
-    node->conn = credis_connect (node->host, node->port, node->timeout);
+    node->conn = redisConnectWithTimeout ((char *)node->host, node->port, node->timeout);
     if (node->conn == NULL)
     {
-      ERROR ("write_redis plugin: Connecting to host \"%s\" (port %i) failed.",
+      ERROR ("write_redis plugin: Connecting to host \"%s\" (port %i) failed: Unknown reason",
           (node->host != NULL) ? node->host : "localhost",
           (node->port != 0) ? node->port : 6379);
       pthread_mutex_unlock (&node->lock);
       return (-1);
     }
+    else if (node->conn->err)
+    {
+      ERROR ("write_redis plugin: Connecting to host \"%s\" (port %i) failed: %s",
+          (node->host != NULL) ? node->host : "localhost",
+          (node->port != 0) ? node->port : 6379,
+          node->conn->errstr);
+      pthread_mutex_unlock (&node->lock);
+      return (-1);
+    }
+
+    rr = redisCommand(node->conn, "SELECT %d", node->database);
+    if (rr == NULL)
+      WARNING("SELECT command error. database:%d message:%s", node->database, node->conn->errstr);
+    else
+      freeReplyObject (rr);
   }
 
-  /* "credis_zadd" doesn't handle a NULL pointer gracefully, so I'd rather
-   * have a meaningful assertion message than a normal segmentation fault. */
-  assert (node->conn != NULL);
-  status = credis_zadd (node->conn, key, (double) vl->time, value);
+  rr = redisCommand (node->conn, "ZADD %s %s %s", key, time, value);
+  if (rr == NULL)
+    WARNING("ZADD command error. key:%s message:%s", key, node->conn->errstr);
+  else
+    freeReplyObject (rr);
 
-  credis_sadd (node->conn, "collectd/values", ident);
+  if (node->max_set_size >= 0)
+  {
+    rr = redisCommand (node->conn, "ZREMRANGEBYRANK %s %d %d", key, 0, (-1 * node->max_set_size) - 1);
+    if (rr == NULL)
+      WARNING("ZREMRANGEBYRANK command error. key:%s message:%s", key, node->conn->errstr);
+    else
+      freeReplyObject (rr);
+  }
+
+  /* TODO(octo): This is more overhead than necessary. Use the cache and
+   * metadata to determine if it is a new metric and call SADD only once for
+   * each metric. */
+  rr = redisCommand (node->conn, "SADD %svalues %s",
+      (node->prefix != NULL) ? node->prefix : REDIS_DEFAULT_PREFIX,
+      ident);
+  if (rr==NULL)
+    WARNING("SADD command error. ident:%s message:%s", ident, node->conn->errstr);
+  else
+    freeReplyObject (rr);
 
   pthread_mutex_unlock (&node->lock);
 
@@ -109,7 +154,7 @@ static void wr_config_free (void *ptr) /* {{{ */
 
   if (node->conn != NULL)
   {
-    credis_close (node->conn);
+    redisFree (node->conn);
     node->conn = NULL;
   }
 
@@ -120,17 +165,21 @@ static void wr_config_free (void *ptr) /* {{{ */
 static int wr_config_node (oconfig_item_t *ci) /* {{{ */
 {
   wr_node_t *node;
+  int timeout;
   int status;
-  int i;
 
-  node = malloc (sizeof (*node));
+  node = calloc (1, sizeof (*node));
   if (node == NULL)
     return (ENOMEM);
-  memset (node, 0, sizeof (*node));
   node->host = NULL;
   node->port = 0;
-  node->timeout = 1000;
+  node->timeout.tv_sec = 0;
+  node->timeout.tv_usec = 1000;
   node->conn = NULL;
+  node->prefix = NULL;
+  node->database = 0;
+  node->max_set_size = -1;
+  node->store_rates = 1;
   pthread_mutex_init (&node->lock, /* attr = */ NULL);
 
   status = cf_util_get_string_buffer (ci, node->name, sizeof (node->name));
@@ -140,7 +189,7 @@ static int wr_config_node (oconfig_item_t *ci) /* {{{ */
     return (status);
   }
 
-  for (i = 0; i < ci->children_num; i++)
+  for (int i = 0; i < ci->children_num; i++)
   {
     oconfig_item_t *child = ci->children + i;
 
@@ -155,8 +204,22 @@ static int wr_config_node (oconfig_item_t *ci) /* {{{ */
         status = 0;
       }
     }
-    else if (strcasecmp ("Timeout", child->key) == 0)
-      status = cf_util_get_int (child, &node->timeout);
+    else if (strcasecmp ("Timeout", child->key) == 0) {
+      status = cf_util_get_int (child, &timeout);
+      if (status == 0) node->timeout.tv_usec = timeout;
+    }
+    else if (strcasecmp ("Prefix", child->key) == 0) {
+      status = cf_util_get_string (child, &node->prefix);
+    }
+    else if (strcasecmp ("Database", child->key) == 0) {
+      status = cf_util_get_int (child, &node->database);
+    }
+    else if (strcasecmp ("MaxSetSize", child->key) == 0) {
+      status = cf_util_get_int (child, &node->max_set_size);
+    }
+    else if (strcasecmp ("StoreRates", child->key) == 0) {
+      status = cf_util_get_boolean (child, &node->store_rates);
+    }
     else
       WARNING ("write_redis plugin: Ignoring unknown config option \"%s\".",
           child->key);
@@ -168,14 +231,14 @@ static int wr_config_node (oconfig_item_t *ci) /* {{{ */
   if (status == 0)
   {
     char cb_name[DATA_MAX_NAME_LEN];
-    user_data_t ud;
 
     ssnprintf (cb_name, sizeof (cb_name), "write_redis/%s", node->name);
 
-    ud.data = node;
-    ud.free_func = wr_config_free;
-
-    status = plugin_register_write (cb_name, wr_write, &ud);
+    status = plugin_register_write (cb_name, wr_write,
+        &(user_data_t) {
+          .data = node,
+          .free_func = wr_config_free,
+        });
   }
 
   if (status != 0)
@@ -186,9 +249,7 @@ static int wr_config_node (oconfig_item_t *ci) /* {{{ */
 
 static int wr_config (oconfig_item_t *ci) /* {{{ */
 {
-  int i;
-
-  for (i = 0; i < ci->children_num; i++)
+  for (int i = 0; i < ci->children_num; i++)
   {
     oconfig_item_t *child = ci->children + i;