X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fwrite_mongodb.c;h=3cdc3d1db873847924493a57b0357650bcaa7610;hb=d45f9cdfc084fc5e8783073b993d58b84deb5d58;hp=f61d6224f09705cb75efc425f37a7a03d89aea72;hpb=0239d8d5379de3ea5b0fd995c4773ec5a302efd6;p=collectd.git

diff --git a/src/write_mongodb.c b/src/write_mongodb.c
index f61d6224..3cdc3d1d 100644
--- a/src/write_mongodb.c
+++ b/src/write_mongodb.c
@@ -1,8 +1,9 @@
 /**
  * collectd - src/write_mongodb.c
- * Copyright (C) 2010-2012  Florian Forster
+ * Copyright (C) 2010-2013  Florian Forster
  * Copyright (C) 2010       Akkarit Sangpetch
  * Copyright (C) 2012       Chris Lundquist
+ * Copyright (C) 2017       Saikrishna Arcot
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -23,39 +24,37 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Florian Forster <ff at octo.it>
+ *   Florian Forster <octo at collectd.org>
  *   Akkarit Sangpetch <asangpet at andrew.cmu.edu>
  *   Chris Lundquist <clundquist at bluebox.net>
+ *   Saikrishna Arcot <saiarcot895 at gmail.com>
  **/
 
 #include "collectd.h"
-#include "plugin.h"
+
 #include "common.h"
-#include "configfile.h"
+#include "plugin.h"
 #include "utils_cache.h"
 
-#include <pthread.h>
-
-#if HAVE_STDINT_H
-# define MONGO_HAVE_STDINT 1
-#else
-# define MONGO_USE_LONG_LONG_INT 1
-#endif
-#include <mongo.h>
+#include <mongoc.h>
 
-struct wm_node_s
-{
+struct wm_node_s {
   char name[DATA_MAX_NAME_LEN];
 
   char *host;
   int port;
   int timeout;
 
-  int connected;
+  /* Authentication information */
+  char *db;
+  char *user;
+  char *passwd;
 
   _Bool store_rates;
+  _Bool connected;
 
-  mongo conn[1];
+  mongoc_client_t *client;
+  mongoc_database_t *database;
   pthread_mutex_t lock;
 };
 typedef struct wm_node_s wm_node_t;
@@ -63,212 +62,351 @@ typedef struct wm_node_s wm_node_t;
 /*
  * Functions
  */
-static int wm_write (const data_set_t *ds, /* {{{ */
-    const value_list_t *vl,
-    user_data_t *ud)
-{
-  wm_node_t *node = ud->data;
-  char collection_name[512];
-  int status;
-  int i;
-  bson record;
-
-  gauge_t *rates = NULL;
-  if (node->store_rates)
-  {
-    rates = uc_get_rate (ds, vl);
-    if (rates == NULL)
-    {
-      ERROR ("write_mongodb plugin: uc_get_rate() failed.");
-      return (-1);
+static bson_t *wm_create_bson(const data_set_t *ds, /* {{{ */
+                              const value_list_t *vl, _Bool store_rates) {
+  bson_t *ret;
+  bson_t subarray;
+  gauge_t *rates;
+
+  ret = bson_new();
+  if (!ret) {
+    ERROR("write_mongodb plugin: bson_new failed.");
+    return NULL;
+  }
+
+  if (store_rates) {
+    rates = uc_get_rate(ds, vl);
+    if (rates == NULL) {
+      ERROR("write_mongodb plugin: uc_get_rate() failed.");
+      bson_free(ret);
+      return NULL;
     }
+  } else {
+    rates = NULL;
   }
 
-  ssnprintf(collection_name, sizeof (collection_name), "collectd.%s", vl->plugin);
+  BSON_APPEND_DATE_TIME(ret, "timestamp", CDTIME_T_TO_MS(vl->time));
+  BSON_APPEND_UTF8(ret, "host", vl->host);
+  BSON_APPEND_UTF8(ret, "plugin", vl->plugin);
+  BSON_APPEND_UTF8(ret, "plugin_instance", vl->plugin_instance);
+  BSON_APPEND_UTF8(ret, "type", vl->type);
+  BSON_APPEND_UTF8(ret, "type_instance", vl->type_instance);
 
-  bson_init(&record);
-  bson_append_double (&record, "time", CDTIME_T_TO_DOUBLE (vl->time));
-  bson_append_string (&record, "host", vl->host);
-  bson_append_string (&record, "plugin_instance", vl->plugin_instance);
-  bson_append_string (&record, "type", vl->type);
-  bson_append_string (&record, "type_instance", vl->type_instance);
+  BSON_APPEND_ARRAY_BEGIN(ret, "values", &subarray); /* {{{ */
+  for (int i = 0; i < ds->ds_num; i++) {
+    char key[16];
+
+    ssnprintf(key, sizeof(key), "%i", i);
 
-  for (i = 0; i < ds->ds_num; i++)
-  {
     if (ds->ds[i].type == DS_TYPE_GAUGE)
-      bson_append_double(&record, ds->ds[i].name, vl->values[i].gauge);
-    else if (node->store_rates)
-      bson_append_double(&record, ds->ds[i].name, (double) rates[i]);
+      BSON_APPEND_DOUBLE(&subarray, key, vl->values[i].gauge);
+    else if (store_rates)
+      BSON_APPEND_DOUBLE(&subarray, key, (double)rates[i]);
     else if (ds->ds[i].type == DS_TYPE_COUNTER)
-      bson_append_long(&record, ds->ds[i].name, vl->values[i].counter);
+      BSON_APPEND_INT64(&subarray, key, vl->values[i].counter);
     else if (ds->ds[i].type == DS_TYPE_DERIVE)
-      bson_append_long(&record, ds->ds[i].name, vl->values[i].derive);
+      BSON_APPEND_INT64(&subarray, key, vl->values[i].derive);
     else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
-      bson_append_long(&record, ds->ds[i].name, vl->values[i].absolute);
+      BSON_APPEND_INT64(&subarray, key, vl->values[i].absolute);
+    else {
+      ERROR("write_mongodb plugin: Unknown ds_type %d for index %d",
+            ds->ds[i].type, i);
+      bson_free(ret);
+      return NULL;
+    }
+  }
+  bson_append_array_end(ret, &subarray); /* }}} values */
+
+  BSON_APPEND_ARRAY_BEGIN(ret, "dstypes", &subarray); /* {{{ */
+  for (int i = 0; i < ds->ds_num; i++) {
+    char key[16];
+
+    ssnprintf(key, sizeof(key), "%i", i);
+
+    if (store_rates)
+      BSON_APPEND_UTF8(&subarray, key, "gauge");
     else
-      assert (23 == 42);
+      BSON_APPEND_UTF8(&subarray, key, DS_TYPE_TO_STRING(ds->ds[i].type));
   }
-  /* We must finish the record, other wise the insert will fail */
-  bson_finish(&record);
-
-  sfree (rates);
-
-  pthread_mutex_lock (&node->lock);
-
-  if (node->connected == 0)
-  {
-    status = mongo_connect(node->conn, node->host, node->port);
-    if (status != MONGO_OK) {
-      ERROR ("write_mongodb plugin: Connecting to host \"%s\" (port %i) failed.",
-          (node->host != NULL) ? node->host : "localhost",
-          (node->port != 0) ? node->port : MONGO_DEFAULT_PORT);
-      mongo_destroy(node->conn);
-      pthread_mutex_unlock (&node->lock);
-      return (-1);
-    }
+  bson_append_array_end(ret, &subarray); /* }}} dstypes */
 
-    if (node->timeout > 0) {
-      status = mongo_set_op_timeout (node->conn, node->timeout);
-      if (status != MONGO_OK) {
-        WARNING ("write_mongodb plugin: mongo_set_op_timeout(%i) failed: %s",
-            node->timeout, node->conn->errstr);
-      }
+  BSON_APPEND_ARRAY_BEGIN(ret, "dsnames", &subarray); /* {{{ */
+  for (int i = 0; i < ds->ds_num; i++) {
+    char key[16];
+
+    ssnprintf(key, sizeof(key), "%i", i);
+    BSON_APPEND_UTF8(&subarray, key, ds->ds[i].name);
+  }
+  bson_append_array_end(ret, &subarray); /* }}} dsnames */
+
+  sfree(rates);
+
+  size_t error_location;
+  if (!bson_validate(ret, BSON_VALIDATE_UTF8, &error_location)) {
+    ERROR("write_mongodb plugin: Error in generated BSON document "
+        "at byte %zu", error_location);
+    bson_free(ret);
+    return NULL;
+  }
+
+  return ret;
+} /* }}} bson *wm_create_bson */
+
+static int wm_initialize(wm_node_t *node) /* {{{ */
+{
+  char *uri;
+  size_t uri_length;
+  char const *format_string;
+
+  if (node->connected) {
+    return 0;
+  }
+
+  INFO("write_mongodb plugin: Connecting to [%s]:%i",
+       (node->host != NULL) ? node->host : "localhost",
+       (node->port != 0) ? node->port : MONGOC_DEFAULT_PORT);
+
+  if ((node->db != NULL) && (node->user != NULL) && (node->passwd != NULL)) {
+    format_string = "mongodb://%s:%s@%s:%d/?authSource=%s";
+    uri_length = strlen(format_string) + strlen(node->user) +
+                 strlen(node->passwd) + strlen(node->host) + 5 +
+                 strlen(node->db) + 1;
+    if ((uri = calloc(1, uri_length)) == NULL) {
+      ERROR("write_mongodb plugin: Not enough memory to assemble "
+            "authentication string.");
+      mongoc_client_destroy(node->client);
+      node->client = NULL;
+      node->connected = 0;
+      return -1;
     }
+    ssnprintf(uri, uri_length, format_string, node->user, node->passwd,
+              node->host, node->port, node->db);
+
+    node->client = mongoc_client_new(uri);
+    if (!node->client) {
+      ERROR("write_mongodb plugin: Authenticating to [%s]%i for database "
+            "\"%s\" as user \"%s\" failed.",
+            (node->host != NULL) ? node->host : "localhost",
+            (node->port != 0) ? node->port : MONGOC_DEFAULT_PORT, node->db,
+            node->user);
+      node->connected = 0;
+      sfree(uri);
+      return -1;
+    }
+  } else {
+    format_string = "mongodb://%s:%d";
+    uri_length = strlen(format_string) + strlen(node->host) + 5 + 1;
+    if ((uri = calloc(1, uri_length)) == NULL) {
+      ERROR("write_mongodb plugin: Not enough memory to assemble "
+            "authentication string.");
+      mongoc_client_destroy(node->client);
+      node->client = NULL;
+      node->connected = 0;
+      return -1;
+    }
+    snprintf(uri, uri_length, format_string, node->host, node->port);
+
+    node->client = mongoc_client_new(uri);
+    if (!node->client) {
+      ERROR("write_mongodb plugin: Connecting to [%s]:%i failed.",
+            (node->host != NULL) ? node->host : "localhost",
+            (node->port != 0) ? node->port : MONGOC_DEFAULT_PORT);
+      node->connected = 0;
+      sfree(uri);
+      return -1;
+    }
+  }
+  sfree(uri);
+
+  node->database = mongoc_client_get_database(node->client, "collectd");
+  if (!node->database) {
+    ERROR("write_mongodb plugin: error creating/getting database");
+    mongoc_client_destroy(node->client);
+    node->client = NULL;
+    node->connected = 0;
+    return -1;
+  }
 
-    node->connected = 1;
+  node->connected = 1;
+  return 0;
+} /* }}} int wm_initialize */
+
+static int wm_write(const data_set_t *ds, /* {{{ */
+                    const value_list_t *vl, user_data_t *ud) {
+  wm_node_t *node = ud->data;
+  mongoc_collection_t *collection = NULL;
+  bson_t *bson_record;
+  bson_error_t error;
+  int status;
+
+  bson_record = wm_create_bson(ds, vl, node->store_rates);
+  if (!bson_record) {
+    ERROR("write_mongodb plugin: error making insert bson");
+    return -1;
   }
 
-  /* Assert if the connection has been established */
-  assert (node->connected == 1);
+  pthread_mutex_lock(&node->lock);
+  if (wm_initialize(node) < 0) {
+    ERROR("write_mongodb plugin: error making connection to server");
+    pthread_mutex_unlock(&node->lock);
+    bson_free(bson_record);
+    return -1;
+  }
 
-  DEBUG ( "write_mongodb plugin: writing record");
-  /* bson_print(&record); */
+  collection =
+      mongoc_client_get_collection(node->client, "collectd", vl->plugin);
+  if (!collection) {
+    ERROR("write_mongodb plugin: error creating/getting collection");
+    mongoc_database_destroy(node->database);
+    mongoc_client_destroy(node->client);
+    node->database = NULL;
+    node->client = NULL;
+    node->connected = 0;
+    pthread_mutex_unlock(&node->lock);
+    bson_free(bson_record);
+    return -1;
+  }
 
-  status = mongo_insert(node->conn,collection_name,&record);
+  status = mongoc_collection_insert(collection, MONGOC_INSERT_NONE, bson_record,
+                                    NULL, &error);
 
-  if(status != MONGO_OK)
-  {
-    ERROR ( "write_mongodb plugin: error inserting record: %d", node->conn->err);
-    if (node->conn->err == MONGO_BSON_INVALID)
-      ERROR ("write_mongodb plugin: %s", node->conn->errstr);
-    else if (record.err)
-      ERROR ("write_mongodb plugin: %s", record.errstr);
+  if (!status) {
+    ERROR("write_mongodb plugin: error inserting record: %s", error.message);
+    mongoc_database_destroy(node->database);
+    mongoc_client_destroy(node->client);
+    node->database = NULL;
+    node->client = NULL;
+    node->connected = 0;
+    pthread_mutex_unlock(&node->lock);
+    bson_free(bson_record);
+    mongoc_collection_destroy(collection);
+    return -1;
   }
 
-  pthread_mutex_unlock (&node->lock);
   /* free our resource as not to leak memory */
-  bson_destroy(&record);
+  mongoc_collection_destroy(collection);
+
+  pthread_mutex_unlock(&node->lock);
 
-  return (0);
+  bson_free(bson_record);
+
+  return 0;
 } /* }}} int wm_write */
 
-static void wm_config_free (void *ptr) /* {{{ */
+static void wm_config_free(void *ptr) /* {{{ */
 {
   wm_node_t *node = ptr;
 
   if (node == NULL)
     return;
 
-  if (node->connected != 0)
-  {
-    mongo_destroy(node->conn);
-    node->connected = 0;
-  }
+  mongoc_database_destroy(node->database);
+  mongoc_client_destroy(node->client);
+  node->database = NULL;
+  node->client = NULL;
+  node->connected = 0;
 
-  sfree (node->host);
-  sfree (node);
+  sfree(node->host);
+  sfree(node);
 } /* }}} void wm_config_free */
 
-static int wm_config_node (oconfig_item_t *ci) /* {{{ */
+static int wm_config_node(oconfig_item_t *ci) /* {{{ */
 {
   wm_node_t *node;
   int status;
-  int i;
 
-  node = malloc (sizeof (*node));
+  node = calloc(1, sizeof(*node));
   if (node == NULL)
-    return (ENOMEM);
-  memset (node, 0, sizeof (*node));
+    return ENOMEM;
+  mongoc_init();
   node->host = NULL;
   node->store_rates = 1;
-  pthread_mutex_init (&node->lock, /* attr = */ NULL);
+  pthread_mutex_init(&node->lock, /* attr = */ NULL);
 
-  status = cf_util_get_string_buffer (ci, node->name, sizeof (node->name));
+  status = cf_util_get_string_buffer(ci, node->name, sizeof(node->name));
 
-  if (status != 0)
-  {
-    sfree (node);
-    return (status);
+  if (status != 0) {
+    sfree(node);
+    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;
 
-    if (strcasecmp ("Host", child->key) == 0)
-      status = cf_util_get_string (child, &node->host);
-    else if (strcasecmp ("Port", child->key) == 0)
-    {
-      status = cf_util_get_port_number (child);
-      if (status > 0)
-      {
+    if (strcasecmp("Host", child->key) == 0)
+      status = cf_util_get_string(child, &node->host);
+    else if (strcasecmp("Port", child->key) == 0) {
+      status = cf_util_get_port_number(child);
+      if (status > 0) {
         node->port = status;
         status = 0;
       }
-    }
-    else if (strcasecmp ("Timeout", child->key) == 0)
-      status = cf_util_get_int (child, &node->timeout);
-    else if (strcasecmp ("StoreRates", child->key) == 0)
-      status = cf_util_get_boolean (child, &node->store_rates);
+    } else if (strcasecmp("Timeout", child->key) == 0)
+      status = cf_util_get_int(child, &node->timeout);
+    else if (strcasecmp("StoreRates", child->key) == 0)
+      status = cf_util_get_boolean(child, &node->store_rates);
+    else if (strcasecmp("Database", child->key) == 0)
+      status = cf_util_get_string(child, &node->db);
+    else if (strcasecmp("User", child->key) == 0)
+      status = cf_util_get_string(child, &node->user);
+    else if (strcasecmp("Password", child->key) == 0)
+      status = cf_util_get_string(child, &node->passwd);
     else
-      WARNING ("write_mongodb plugin: Ignoring unknown config option \"%s\".",
-          child->key);
+      WARNING("write_mongodb plugin: Ignoring unknown config option \"%s\".",
+              child->key);
 
     if (status != 0)
       break;
   } /* for (i = 0; i < ci->children_num; i++) */
 
-  if (status == 0)
-  {
-    char cb_name[DATA_MAX_NAME_LEN];
-    user_data_t ud;
+  if ((node->db != NULL) || (node->user != NULL) || (node->passwd != NULL)) {
+    if ((node->db == NULL) || (node->user == NULL) || (node->passwd == NULL)) {
+      WARNING(
+          "write_mongodb plugin: Authentication requires the "
+          "\"Database\", \"User\" and \"Password\" options to be specified, "
+          "but at last one of them is missing. Authentication will NOT be "
+          "used.");
+      sfree(node->db);
+      sfree(node->user);
+      sfree(node->passwd);
+    }
+  }
 
-    ssnprintf (cb_name, sizeof (cb_name), "write_mongodb/%s", node->name);
+  if (status == 0) {
+    char cb_name[DATA_MAX_NAME_LEN];
 
-    ud.data = node;
-    ud.free_func = wm_config_free;
+    ssnprintf(cb_name, sizeof(cb_name), "write_mongodb/%s", node->name);
 
-    status = plugin_register_write (cb_name, wm_write, &ud);
-    INFO ("write_mongodb plugin: registered write plugin %s %d",cb_name,status);
+    status = plugin_register_write(
+        cb_name, wm_write, &(user_data_t){
+                               .data = node, .free_func = wm_config_free,
+                           });
+    INFO("write_mongodb plugin: registered write plugin %s %d", cb_name,
+         status);
   }
 
   if (status != 0)
-    wm_config_free (node);
+    wm_config_free(node);
 
-  return (status);
+  return status;
 } /* }}} int wm_config_node */
 
-static int wm_config (oconfig_item_t *ci) /* {{{ */
+static int wm_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;
 
-    if (strcasecmp ("Node", child->key) == 0)
-      wm_config_node (child);
+    if (strcasecmp("Node", child->key) == 0)
+      wm_config_node(child);
     else
-      WARNING ("write_mongodb plugin: Ignoring unknown "
-          "configuration option \"%s\" at top level.", child->key);
+      WARNING("write_mongodb plugin: Ignoring unknown "
+              "configuration option \"%s\" at top level.",
+              child->key);
   }
 
-  return (0);
+  return 0;
 } /* }}} int wm_config */
 
-void module_register (void)
-{
-  plugin_register_complex_config ("write_mongodb", wm_config);
+void module_register(void) {
+  plugin_register_complex_config("write_mongodb", wm_config);
 }
-
-/* vim: set sw=2 sts=2 tw=78 et fdm=marker : */