--- /dev/null
+/**
+ * collectd - src/ceph.c
+ * Copyright (C) 2011 New Dream Network
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors:
+ * Colin McCabe <cmccabe@alumni.cmu.edu>
+ * Dennis Zou <yunzou@cisco.com>
+ * Dan Ryder <daryder@cisco.com>
+ **/
+
+#define _DEFAULT_SOURCE
+#define _BSD_SOURCE
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <yajl/yajl_parse.h>
+#if HAVE_YAJL_YAJL_VERSION_H
+#include <yajl/yajl_version.h>
+#endif
+
+#include <limits.h>
+#include <poll.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <math.h>
+#include <inttypes.h>
+
+#define RETRY_AVGCOUNT -1
+
+#if defined(YAJL_MAJOR) && (YAJL_MAJOR > 1)
+# define HAVE_YAJL_V2 1
+#endif
+
+#define RETRY_ON_EINTR(ret, expr) \
+ while(1) { \
+ ret = expr; \
+ if(ret >= 0) \
+ break; \
+ ret = -errno; \
+ if(ret != -EINTR) \
+ break; \
+ }
+
+/** Timeout interval in seconds */
+#define CEPH_TIMEOUT_INTERVAL 1
+
+/** Maximum path length for a UNIX domain socket on this system */
+#define UNIX_DOMAIN_SOCK_PATH_MAX (sizeof(((struct sockaddr_un*)0)->sun_path))
+
+/** Yajl callback returns */
+#define CEPH_CB_CONTINUE 1
+#define CEPH_CB_ABORT 0
+
+#if HAVE_YAJL_V2
+typedef size_t yajl_len_t;
+#else
+typedef unsigned int yajl_len_t;
+#endif
+
+/** Number of types for ceph defined in types.db */
+#define CEPH_DSET_TYPES_NUM 3
+/** ceph types enum */
+enum ceph_dset_type_d
+{
+ DSET_LATENCY = 0,
+ DSET_BYTES = 1,
+ DSET_RATE = 2,
+ DSET_TYPE_UNFOUND = 1000
+};
+
+/** Valid types for ceph defined in types.db */
+const char * ceph_dset_types [CEPH_DSET_TYPES_NUM] =
+ {"ceph_latency", "ceph_bytes", "ceph_rate"};
+
+/******* ceph_daemon *******/
+struct ceph_daemon
+{
+ /** Version of the admin_socket interface */
+ uint32_t version;
+ /** daemon name **/
+ char name[DATA_MAX_NAME_LEN];
+
+ /** Path to the socket that we use to talk to the ceph daemon */
+ char asok_path[UNIX_DOMAIN_SOCK_PATH_MAX];
+
+ /** Number of counters */
+ int ds_num;
+ /** Track ds types */
+ uint32_t *ds_types;
+ /** Track ds names to match with types */
+ char **ds_names;
+
+ /**
+ * Keep track of last data for latency values so we can calculate rate
+ * since last poll.
+ */
+ struct last_data **last_poll_data;
+ /** index of last poll data */
+ int last_idx;
+};
+
+/******* JSON parsing *******/
+typedef int (*node_handler_t)(void *, const char*, const char*);
+
+/** Track state and handler while parsing JSON */
+struct yajl_struct
+{
+ node_handler_t handler;
+ void * handler_arg;
+ struct {
+ char key[DATA_MAX_NAME_LEN];
+ int key_len;
+ } state[YAJL_MAX_DEPTH];
+ int depth;
+};
+typedef struct yajl_struct yajl_struct;
+
+enum perfcounter_type_d
+{
+ PERFCOUNTER_LATENCY = 0x4, PERFCOUNTER_DERIVE = 0x8,
+};
+
+/** Give user option to use default (long run = since daemon started) avg */
+static int long_run_latency_avg = 0;
+
+/**
+ * Give user option to use default type for special cases -
+ * filestore.journal_wr_bytes is currently only metric here. Ceph reports the
+ * type as a sum/count pair and will calculate it the same as a latency value.
+ * All other "bytes" metrics (excluding the used/capacity bytes for the OSD)
+ * use the DERIVE type. Unless user specifies to use given type, convert this
+ * metric to use DERIVE.
+ */
+static int convert_special_metrics = 1;
+
+/** Array of daemons to monitor */
+static struct ceph_daemon **g_daemons = NULL;
+
+/** Number of elements in g_daemons */
+static int g_num_daemons = 0;
+
+/**
+ * A set of data that we build up in memory while parsing the JSON.
+ */
+struct values_tmp
+{
+ /** ceph daemon we are processing data for*/
+ struct ceph_daemon *d;
+ /** track avgcount across counters for avgcount/sum latency pairs */
+ uint64_t avgcount;
+ /** current index of counters - used to get type of counter */
+ int index;
+ /** do we already have an avgcount for latency pair */
+ int avgcount_exists;
+ /**
+ * similar to index, but current index of latency type counters -
+ * used to get last poll data of counter
+ */
+ int latency_index;
+ /**
+ * values list - maintain across counters since
+ * host/plugin/plugin instance are always the same
+ */
+ value_list_t vlist;
+};
+
+/**
+ * A set of count/sum pairs to keep track of latency types and get difference
+ * between this poll data and last poll data.
+ */
+struct last_data
+{
+ char ds_name[DATA_MAX_NAME_LEN];
+ double last_sum;
+ uint64_t last_count;
+};
+
+/******* network I/O *******/
+enum cstate_t
+{
+ CSTATE_UNCONNECTED = 0,
+ CSTATE_WRITE_REQUEST,
+ CSTATE_READ_VERSION,
+ CSTATE_READ_AMT,
+ CSTATE_READ_JSON,
+};
+
+enum request_type_t
+{
+ ASOK_REQ_VERSION = 0,
+ ASOK_REQ_DATA = 1,
+ ASOK_REQ_SCHEMA = 2,
+ ASOK_REQ_NONE = 1000,
+};
+
+struct cconn
+{
+ /** The Ceph daemon that we're talking to */
+ struct ceph_daemon *d;
+
+ /** Request type */
+ uint32_t request_type;
+
+ /** The connection state */
+ enum cstate_t state;
+
+ /** The socket we use to talk to this daemon */
+ int asok;
+
+ /** The amount of data remaining to read / write. */
+ uint32_t amt;
+
+ /** Length of the JSON to read */
+ uint32_t json_len;
+
+ /** Buffer containing JSON data */
+ unsigned char *json;
+
+ /** Keep data important to yajl processing */
+ struct yajl_struct yajl;
+};
+
+static int ceph_cb_null(void *ctx)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_boolean(void *ctx, int bool_val)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static int
+ceph_cb_number(void *ctx, const char *number_val, yajl_len_t number_len)
+{
+ yajl_struct *yajl = (yajl_struct*)ctx;
+ char buffer[number_len+1];
+ int i, latency_type = 0, result;
+ char key[128];
+
+ memcpy(buffer, number_val, number_len);
+ buffer[sizeof(buffer) - 1] = 0;
+
+ ssnprintf(key, yajl->state[0].key_len, "%s", yajl->state[0].key);
+ for(i = 1; i < yajl->depth; i++)
+ {
+ if((i == yajl->depth-1) && ((strcmp(yajl->state[i].key,"avgcount") == 0)
+ || (strcmp(yajl->state[i].key,"sum") == 0)))
+ {
+ if(convert_special_metrics)
+ {
+ /**
+ * Special case for filestore:JournalWrBytes. For some reason,
+ * Ceph schema encodes this as a count/sum pair while all
+ * other "Bytes" data (excluding used/capacity bytes for OSD
+ * space) uses a single "Derive" type. To spare further
+ * confusion, keep this KPI as the same type of other "Bytes".
+ * Instead of keeping an "average" or "rate", use the "sum" in
+ * the pair and assign that to the derive value.
+ */
+ if((strcmp(yajl->state[i-1].key, "journal_wr_bytes") == 0) &&
+ (strcmp(yajl->state[i-2].key,"filestore") == 0) &&
+ (strcmp(yajl->state[i].key,"avgcount") == 0))
+ {
+ DEBUG("ceph plugin: Skipping avgcount for filestore.JournalWrBytes");
+ yajl->depth = (yajl->depth - 1);
+ return CEPH_CB_CONTINUE;
+ }
+ }
+ //probably a avgcount/sum pair. if not - we'll try full key later
+ latency_type = 1;
+ break;
+ }
+ strncat(key, ".", 1);
+ strncat(key, yajl->state[i].key, yajl->state[i].key_len+1);
+ }
+
+ result = yajl->handler(yajl->handler_arg, buffer, key);
+
+ if((result == RETRY_AVGCOUNT) && latency_type)
+ {
+ strncat(key, ".", 1);
+ strncat(key, yajl->state[yajl->depth-1].key,
+ yajl->state[yajl->depth-1].key_len+1);
+ result = yajl->handler(yajl->handler_arg, buffer, key);
+ }
+
+ if(result == -ENOMEM)
+ {
+ ERROR("ceph plugin: memory allocation failed");
+ return CEPH_CB_ABORT;
+ }
+
+ yajl->depth = (yajl->depth - 1);
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_string(void *ctx, const unsigned char *string_val,
+ yajl_len_t string_len)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_start_map(void *ctx)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static int
+ceph_cb_map_key(void *ctx, const unsigned char *key, yajl_len_t string_len)
+{
+ yajl_struct *yajl = (yajl_struct*)ctx;
+
+ if((yajl->depth+1) >= YAJL_MAX_DEPTH)
+ {
+ ERROR("ceph plugin: depth exceeds max, aborting.");
+ return CEPH_CB_ABORT;
+ }
+
+ char buffer[string_len+1];
+
+ memcpy(buffer, key, string_len);
+ buffer[sizeof(buffer) - 1] = 0;
+
+ snprintf(yajl->state[yajl->depth].key, sizeof(buffer), "%s", buffer);
+ yajl->state[yajl->depth].key_len = sizeof(buffer);
+ yajl->depth = (yajl->depth + 1);
+
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_end_map(void *ctx)
+{
+ yajl_struct *yajl = (yajl_struct*)ctx;
+
+ yajl->depth = (yajl->depth - 1);
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_start_array(void *ctx)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static int ceph_cb_end_array(void *ctx)
+{
+ return CEPH_CB_CONTINUE;
+}
+
+static yajl_callbacks callbacks = {
+ ceph_cb_null,
+ ceph_cb_boolean,
+ NULL,
+ NULL,
+ ceph_cb_number,
+ ceph_cb_string,
+ ceph_cb_start_map,
+ ceph_cb_map_key,
+ ceph_cb_end_map,
+ ceph_cb_start_array,
+ ceph_cb_end_array
+};
+
+static void ceph_daemon_print(const struct ceph_daemon *d)
+{
+ DEBUG("ceph plugin: name=%s, asok_path=%s", d->name, d->asok_path);
+}
+
+static void ceph_daemons_print(void)
+{
+ int i;
+ for(i = 0; i < g_num_daemons; ++i)
+ {
+ ceph_daemon_print(g_daemons[i]);
+ }
+}
+
+static void ceph_daemon_free(struct ceph_daemon *d)
+{
+ int i = 0;
+ for(; i < d->last_idx; i++)
+ {
+ sfree(d->last_poll_data[i]);
+ }
+ sfree(d->last_poll_data);
+ d->last_poll_data = NULL;
+ d->last_idx = 0;
+ for(i = 0; i < d->ds_num; i++)
+ {
+ sfree(d->ds_names[i]);
+ }
+ sfree(d->ds_types);
+ sfree(d->ds_names);
+ sfree(d);
+}
+
+/**
+ * Compact ds name by removing special characters and trimming length to
+ * DATA_MAX_NAME_LEN if necessary
+ */
+static void compact_ds_name(char *source, char *dest)
+{
+ int keys_num = 0, i;
+ char *save_ptr = NULL, *tmp_ptr = source;
+ char *keys[16];
+ char len_str[3];
+ char tmp[DATA_MAX_NAME_LEN];
+ size_t key_chars_remaining = (DATA_MAX_NAME_LEN-1);
+ int reserved = 0;
+ int offset = 0;
+ memset(tmp, 0, sizeof(tmp));
+ if(source == NULL || dest == NULL || source[0] == '\0' || dest[0] != '\0')
+ {
+ return;
+ }
+ size_t src_len = strlen(source);
+ snprintf(len_str, sizeof(len_str), "%zu", src_len);
+ unsigned char append_status = 0x0;
+ append_status |= (source[src_len - 1] == '-') ? 0x1 : 0x0;
+ append_status |= (source[src_len - 1] == '+') ? 0x2 : 0x0;
+ while ((keys[keys_num] = strtok_r(tmp_ptr, ":_-+", &save_ptr)) != NULL)
+ {
+ tmp_ptr = NULL;
+ /** capitalize 1st char **/
+ keys[keys_num][0] = toupper(keys[keys_num][0]);
+ keys_num++;
+ if(keys_num >= 16)
+ {
+ break;
+ }
+ }
+ /** concatenate each part of source string **/
+ for(i = 0; i < keys_num; i++)
+ {
+ strncat(tmp, keys[i], key_chars_remaining);
+ key_chars_remaining -= strlen(keys[i]);
+ }
+ tmp[DATA_MAX_NAME_LEN - 1] = '\0';
+ /** to coordinate limitation of length of type_instance
+ * we will truncate ds_name
+ * when the its length is more than
+ * DATA_MAX_NAME_LEN
+ */
+ if(strlen(tmp) > DATA_MAX_NAME_LEN - 1)
+ {
+ append_status |= 0x4;
+ /** we should reserve space for
+ * len_str
+ */
+ reserved += 2;
+ }
+ if(append_status & 0x1)
+ {
+ /** we should reserve space for
+ * "Minus"
+ */
+ reserved += 5;
+ }
+ if(append_status & 0x2)
+ {
+ /** we should reserve space for
+ * "Plus"
+ */
+ reserved += 4;
+ }
+ snprintf(dest, DATA_MAX_NAME_LEN - reserved, "%s", tmp);
+ offset = strlen(dest);
+ switch (append_status)
+ {
+ case 0x1:
+ memcpy(dest + offset, "Minus", 5);
+ break;
+ case 0x2:
+ memcpy(dest + offset, "Plus", 5);
+ break;
+ case 0x4:
+ memcpy(dest + offset, len_str, 2);
+ break;
+ case 0x5:
+ memcpy(dest + offset, "Minus", 5);
+ memcpy(dest + offset + 5, len_str, 2);
+ break;
+ case 0x6:
+ memcpy(dest + offset, "Plus", 4);
+ memcpy(dest + offset + 4, len_str, 2);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * Parse key to remove "type" if this is for schema and initiate compaction
+ */
+static int parse_keys(const char *key_str, char *ds_name)
+{
+ char *ptr, *rptr;
+ size_t ds_name_len = 0;
+ /**
+ * allow up to 100 characters before compaction - compact_ds_name will not
+ * allow more than DATA_MAX_NAME_LEN chars
+ */
+ int max_str_len = 100;
+ char tmp_ds_name[max_str_len];
+ memset(tmp_ds_name, 0, sizeof(tmp_ds_name));
+ if(ds_name == NULL || key_str == NULL || key_str[0] == '\0' ||
+ ds_name[0] != '\0')
+ {
+ return -1;
+ }
+ if((ptr = strchr(key_str, '.')) == NULL
+ || (rptr = strrchr(key_str, '.')) == NULL)
+ {
+ memcpy(tmp_ds_name, key_str, max_str_len - 1);
+ goto compact;
+ }
+
+ ds_name_len = (rptr - ptr) > max_str_len ? max_str_len : (rptr - ptr);
+ if((ds_name_len == 0) || strncmp(rptr + 1, "type", 4))
+ { /** copy whole key **/
+ memcpy(tmp_ds_name, key_str, max_str_len - 1);
+ }
+ else
+ {/** more than two keys **/
+ memcpy(tmp_ds_name, key_str, ((rptr - key_str) > (max_str_len - 1) ?
+ (max_str_len - 1) : (rptr - key_str)));
+ }
+
+ compact: compact_ds_name(tmp_ds_name, ds_name);
+ return 0;
+}
+
+/**
+ * while parsing ceph admin socket schema, save counter name and type for later
+ * data processing
+ */
+static int ceph_daemon_add_ds_entry(struct ceph_daemon *d, const char *name,
+ int pc_type)
+{
+ uint32_t type;
+ char ds_name[DATA_MAX_NAME_LEN];
+ memset(ds_name, 0, sizeof(ds_name));
+
+ if(convert_special_metrics)
+ {
+ /**
+ * Special case for filestore:JournalWrBytes. For some reason, Ceph
+ * schema encodes this as a count/sum pair while all other "Bytes" data
+ * (excluding used/capacity bytes for OSD space) uses a single "Derive"
+ * type. To spare further confusion, keep this KPI as the same type of
+ * other "Bytes". Instead of keeping an "average" or "rate", use the
+ * "sum" in the pair and assign that to the derive value.
+ */
+ if((strcmp(name,"filestore.journal_wr_bytes.type") == 0))
+ {
+ pc_type = 10;
+ }
+ }
+
+ d->ds_names = realloc(d->ds_names, sizeof(char *) * (d->ds_num + 1));
+ if(!d->ds_names)
+ {
+ return -ENOMEM;
+ }
+
+ d->ds_types = realloc(d->ds_types, sizeof(uint32_t) * (d->ds_num + 1));
+ if(!d->ds_types)
+ {
+ return -ENOMEM;
+ }
+
+ d->ds_names[d->ds_num] = malloc(sizeof(char) * DATA_MAX_NAME_LEN);
+ if(!d->ds_names[d->ds_num])
+ {
+ return -ENOMEM;
+ }
+
+ type = (pc_type & PERFCOUNTER_DERIVE) ? DSET_RATE :
+ ((pc_type & PERFCOUNTER_LATENCY) ? DSET_LATENCY : DSET_BYTES);
+ d->ds_types[d->ds_num] = type;
+
+ if(parse_keys(name, ds_name))
+ {
+ return 1;
+ }
+
+ sstrncpy(d->ds_names[d->ds_num], ds_name, DATA_MAX_NAME_LEN -1);
+ d->ds_num = (d->ds_num + 1);
+
+ return 0;
+}
+
+/******* ceph_config *******/
+static int cc_handle_str(struct oconfig_item_s *item, char *dest, int dest_len)
+{
+ const char *val;
+ if(item->values_num != 1)
+ {
+ return -ENOTSUP;
+ }
+ if(item->values[0].type != OCONFIG_TYPE_STRING)
+ {
+ return -ENOTSUP;
+ }
+ val = item->values[0].value.string;
+ if(snprintf(dest, dest_len, "%s", val) > (dest_len - 1))
+ {
+ ERROR("ceph plugin: configuration parameter '%s' is too long.\n",
+ item->key);
+ return -ENAMETOOLONG;
+ }
+ return 0;
+}
+
+static int cc_handle_bool(struct oconfig_item_s *item, int *dest)
+{
+ if(item->values_num != 1)
+ {
+ return -ENOTSUP;
+ }
+
+ if(item->values[0].type != OCONFIG_TYPE_BOOLEAN)
+ {
+ return -ENOTSUP;
+ }
+
+ *dest = (item->values[0].value.boolean) ? 1 : 0;
+ return 0;
+}
+
+static int cc_add_daemon_config(oconfig_item_t *ci)
+{
+ int ret, i;
+ struct ceph_daemon *array, *nd, cd;
+ memset(&cd, 0, sizeof(struct ceph_daemon));
+
+ if((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING("ceph plugin: `Daemon' blocks need exactly one string "
+ "argument.");
+ return (-1);
+ }
+
+ ret = cc_handle_str(ci, cd.name, DATA_MAX_NAME_LEN);
+ if(ret)
+ {
+ return ret;
+ }
+
+ for(i=0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if(strcasecmp("SocketPath", child->key) == 0)
+ {
+ ret = cc_handle_str(child, cd.asok_path, sizeof(cd.asok_path));
+ if(ret)
+ {
+ return ret;
+ }
+ }
+ else
+ {
+ WARNING("ceph plugin: ignoring unknown option %s", child->key);
+ }
+ }
+ if(cd.name[0] == '\0')
+ {
+ ERROR("ceph plugin: you must configure a daemon name.\n");
+ return -EINVAL;
+ }
+ else if(cd.asok_path[0] == '\0')
+ {
+ ERROR("ceph plugin(name=%s): you must configure an administrative "
+ "socket path.\n", cd.name);
+ return -EINVAL;
+ }
+ else if(!((cd.asok_path[0] == '/') ||
+ (cd.asok_path[0] == '.' && cd.asok_path[1] == '/')))
+ {
+ ERROR("ceph plugin(name=%s): administrative socket paths must begin "
+ "with '/' or './' Can't parse: '%s'\n", cd.name, cd.asok_path);
+ return -EINVAL;
+ }
+
+ array = realloc(g_daemons,
+ sizeof(struct ceph_daemon *) * (g_num_daemons + 1));
+ if(array == NULL)
+ {
+ /* The positive return value here indicates that this is a
+ * runtime error, not a configuration error. */
+ return ENOMEM;
+ }
+ g_daemons = (struct ceph_daemon**) array;
+ nd = malloc(sizeof(struct ceph_daemon));
+ if(!nd)
+ {
+ return ENOMEM;
+ }
+ memcpy(nd, &cd, sizeof(struct ceph_daemon));
+ g_daemons[g_num_daemons++] = nd;
+ return 0;
+}
+
+static int ceph_config(oconfig_item_t *ci)
+{
+ int ret, i;
+
+ for(i = 0; i < ci->children_num; ++i)
+ {
+ oconfig_item_t *child = ci->children + i;
+ if(strcasecmp("Daemon", child->key) == 0)
+ {
+ ret = cc_add_daemon_config(child);
+ if(ret == ENOMEM)
+ {
+ ERROR("ceph plugin: Couldn't allocate memory");
+ return ret;
+ }
+ else if(ret)
+ {
+ //process other daemons and ignore this one
+ continue;
+ }
+ }
+ else if(strcasecmp("LongRunAvgLatency", child->key) == 0)
+ {
+ ret = cc_handle_bool(child, &long_run_latency_avg);
+ if(ret)
+ {
+ return ret;
+ }
+ }
+ else if(strcasecmp("ConvertSpecialMetricTypes", child->key) == 0)
+ {
+ ret = cc_handle_bool(child, &convert_special_metrics);
+ if(ret)
+ {
+ return ret;
+ }
+ }
+ else
+ {
+ WARNING("ceph plugin: ignoring unknown option %s", child->key);
+ }
+ }
+ return 0;
+}
+
+/**
+ * Parse JSON and get error message if present
+ */
+static int
+traverse_json(const unsigned char *json, uint32_t json_len, yajl_handle hand)
+{
+ yajl_status status = yajl_parse(hand, json, json_len);
+ unsigned char *msg;
+
+ switch(status)
+ {
+ case yajl_status_error:
+ msg = yajl_get_error(hand, /* verbose = */ 1,
+ /* jsonText = */ (unsigned char *) json,
+ (unsigned int) json_len);
+ ERROR ("ceph plugin: yajl_parse failed: %s", msg);
+ yajl_free_error(hand, msg);
+ return 1;
+ case yajl_status_client_canceled:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+/**
+ * Add entry for each counter while parsing schema
+ */
+static int
+node_handler_define_schema(void *arg, const char *val, const char *key)
+{
+ struct ceph_daemon *d = (struct ceph_daemon *) arg;
+ int pc_type;
+ pc_type = atoi(val);
+ return ceph_daemon_add_ds_entry(d, key, pc_type);
+}
+
+/**
+ * Latency counter does not yet have an entry in last poll data - add it.
+ */
+static int add_last(struct ceph_daemon *d, const char *ds_n, double cur_sum,
+ uint64_t cur_count)
+{
+ d->last_poll_data[d->last_idx] = malloc(1 * sizeof(struct last_data));
+ if(!d->last_poll_data[d->last_idx])
+ {
+ return -ENOMEM;
+ }
+ sstrncpy(d->last_poll_data[d->last_idx]->ds_name,ds_n,
+ sizeof(d->last_poll_data[d->last_idx]->ds_name));
+ d->last_poll_data[d->last_idx]->last_sum = cur_sum;
+ d->last_poll_data[d->last_idx]->last_count = cur_count;
+ d->last_idx = (d->last_idx + 1);
+ return 0;
+}
+
+/**
+ * Update latency counter or add new entry if it doesn't exist
+ */
+static int update_last(struct ceph_daemon *d, const char *ds_n, int index,
+ double cur_sum, uint64_t cur_count)
+{
+ if((d->last_idx > index) && (strcmp(d->last_poll_data[index]->ds_name, ds_n) == 0))
+ {
+ d->last_poll_data[index]->last_sum = cur_sum;
+ d->last_poll_data[index]->last_count = cur_count;
+ return 0;
+ }
+
+ if(!d->last_poll_data)
+ {
+ d->last_poll_data = malloc(1 * sizeof(struct last_data *));
+ if(!d->last_poll_data)
+ {
+ return -ENOMEM;
+ }
+ }
+ else
+ {
+ struct last_data **tmp_last = realloc(d->last_poll_data,
+ ((d->last_idx+1) * sizeof(struct last_data *)));
+ if(!tmp_last)
+ {
+ return -ENOMEM;
+ }
+ d->last_poll_data = tmp_last;
+ }
+ return add_last(d, ds_n, cur_sum, cur_count);
+}
+
+/**
+ * If using index guess failed (shouldn't happen, but possible if counters
+ * get rearranged), resort to searching for counter name
+ */
+static int backup_search_for_last_avg(struct ceph_daemon *d, const char *ds_n)
+{
+ int i = 0;
+ for(; i < d->last_idx; i++)
+ {
+ if(strcmp(d->last_poll_data[i]->ds_name, ds_n) == 0)
+ {
+ return i;
+ }
+ }
+ return -1;
+}
+
+/**
+ * Calculate average b/t current data and last poll data
+ * if last poll data exists
+ */
+static double get_last_avg(struct ceph_daemon *d, const char *ds_n, int index,
+ double cur_sum, uint64_t cur_count)
+{
+ double result = -1.1, sum_delt = 0.0;
+ uint64_t count_delt = 0;
+ int tmp_index = 0;
+ if(d->last_idx > index)
+ {
+ if(strcmp(d->last_poll_data[index]->ds_name, ds_n) == 0)
+ {
+ tmp_index = index;
+ }
+ //test previous index
+ else if((index > 0) && (strcmp(d->last_poll_data[index-1]->ds_name, ds_n) == 0))
+ {
+ tmp_index = (index - 1);
+ }
+ else
+ {
+ tmp_index = backup_search_for_last_avg(d, ds_n);
+ }
+
+ if((tmp_index > -1) && (cur_count > d->last_poll_data[tmp_index]->last_count))
+ {
+ sum_delt = (cur_sum - d->last_poll_data[tmp_index]->last_sum);
+ count_delt = (cur_count - d->last_poll_data[tmp_index]->last_count);
+ result = (sum_delt / count_delt);
+ }
+ }
+
+ if(result == -1.1)
+ {
+ result = NAN;
+ }
+ if(update_last(d, ds_n, tmp_index, cur_sum, cur_count) == -ENOMEM)
+ {
+ return -ENOMEM;
+ }
+ return result;
+}
+
+/**
+ * If using index guess failed, resort to searching for counter name
+ */
+static uint32_t backup_search_for_type(struct ceph_daemon *d, char *ds_name)
+{
+ int idx = 0;
+ for(; idx < d->ds_num; idx++)
+ {
+ if(strcmp(d->ds_names[idx], ds_name) == 0)
+ {
+ return d->ds_types[idx];
+ }
+ }
+ return DSET_TYPE_UNFOUND;
+}
+
+/**
+ * Process counter data and dispatch values
+ */
+static int node_handler_fetch_data(void *arg, const char *val, const char *key)
+{
+ value_t uv;
+ double tmp_d;
+ uint64_t tmp_u;
+ struct values_tmp *vtmp = (struct values_tmp*) arg;
+ uint32_t type = DSET_TYPE_UNFOUND;
+ int index = vtmp->index;
+
+ char ds_name[DATA_MAX_NAME_LEN];
+ memset(ds_name, 0, sizeof(ds_name));
+
+ if(parse_keys(key, ds_name))
+ {
+ return 1;
+ }
+
+ if(index >= vtmp->d->ds_num)
+ {
+ //don't overflow bounds of array
+ index = (vtmp->d->ds_num - 1);
+ }
+
+ /**
+ * counters should remain in same order we parsed schema... we maintain the
+ * index variable to keep track of current point in list of counters. first
+ * use index to guess point in array for retrieving type. if that doesn't
+ * work, use the old way to get the counter type
+ */
+ if(strcmp(ds_name, vtmp->d->ds_names[index]) == 0)
+ {
+ //found match
+ type = vtmp->d->ds_types[index];
+ }
+ else if((index > 0) && (strcmp(ds_name, vtmp->d->ds_names[index-1]) == 0))
+ {
+ //try previous key
+ type = vtmp->d->ds_types[index-1];
+ }
+
+ if(type == DSET_TYPE_UNFOUND)
+ {
+ //couldn't find right type by guessing, check the old way
+ type = backup_search_for_type(vtmp->d, ds_name);
+ }
+
+ switch(type)
+ {
+ case DSET_LATENCY:
+ if(vtmp->avgcount_exists == -1)
+ {
+ sscanf(val, "%" PRIu64, &vtmp->avgcount);
+ vtmp->avgcount_exists = 0;
+ //return after saving avgcount - don't dispatch value
+ //until latency calculation
+ return 0;
+ }
+ else
+ {
+ double sum, result;
+ sscanf(val, "%lf", &sum);
+
+ if(vtmp->avgcount == 0)
+ {
+ vtmp->avgcount = 1;
+ }
+
+ /** User wants latency values as long run avg */
+ if(long_run_latency_avg)
+ {
+ result = (sum / vtmp->avgcount);
+ }
+ else
+ {
+ result = get_last_avg(vtmp->d, ds_name, vtmp->latency_index, sum, vtmp->avgcount);
+ if(result == -ENOMEM)
+ {
+ return -ENOMEM;
+ }
+ }
+
+ uv.gauge = result;
+ vtmp->avgcount_exists = -1;
+ vtmp->latency_index = (vtmp->latency_index + 1);
+ }
+ break;
+ case DSET_BYTES:
+ sscanf(val, "%lf", &tmp_d);
+ uv.gauge = tmp_d;
+ break;
+ case DSET_RATE:
+ sscanf(val, "%" PRIu64, &tmp_u);
+ uv.derive = tmp_u;
+ break;
+ case DSET_TYPE_UNFOUND:
+ default:
+ ERROR("ceph plugin: ds %s was not properly initialized.", ds_name);
+ return -1;
+ }
+
+ sstrncpy(vtmp->vlist.type, ceph_dset_types[type], sizeof(vtmp->vlist.type));
+ sstrncpy(vtmp->vlist.type_instance, ds_name, sizeof(vtmp->vlist.type_instance));
+ vtmp->vlist.values = &uv;
+ vtmp->vlist.values_len = 1;
+
+ vtmp->index = (vtmp->index + 1);
+ plugin_dispatch_values(&vtmp->vlist);
+
+ return 0;
+}
+
+static int cconn_connect(struct cconn *io)
+{
+ struct sockaddr_un address;
+ int flags, fd, err;
+ if(io->state != CSTATE_UNCONNECTED)
+ {
+ ERROR("ceph plugin: cconn_connect: io->state != CSTATE_UNCONNECTED");
+ return -EDOM;
+ }
+ fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if(fd < 0)
+ {
+ int err = -errno;
+ ERROR("ceph plugin: cconn_connect: socket(PF_UNIX, SOCK_STREAM, 0) "
+ "failed: error %d", err);
+ return err;
+ }
+ memset(&address, 0, sizeof(struct sockaddr_un));
+ address.sun_family = AF_UNIX;
+ snprintf(address.sun_path, sizeof(address.sun_path), "%s",
+ io->d->asok_path);
+ RETRY_ON_EINTR(err,
+ connect(fd, (struct sockaddr *) &address, sizeof(struct sockaddr_un)));
+ if(err < 0)
+ {
+ ERROR("ceph plugin: cconn_connect: connect(%d) failed: error %d",
+ fd, err);
+ return err;
+ }
+
+ flags = fcntl(fd, F_GETFL, 0);
+ if(fcntl(fd, F_SETFL, flags | O_NONBLOCK) != 0)
+ {
+ err = -errno;
+ ERROR("ceph plugin: cconn_connect: fcntl(%d, O_NONBLOCK) error %d",
+ fd, err);
+ return err;
+ }
+ io->asok = fd;
+ io->state = CSTATE_WRITE_REQUEST;
+ io->amt = 0;
+ io->json_len = 0;
+ io->json = NULL;
+ return 0;
+}
+
+static void cconn_close(struct cconn *io)
+{
+ io->state = CSTATE_UNCONNECTED;
+ if(io->asok != -1)
+ {
+ int res;
+ RETRY_ON_EINTR(res, close(io->asok));
+ }
+ io->asok = -1;
+ io->amt = 0;
+ io->json_len = 0;
+ sfree(io->json);
+ io->json = NULL;
+}
+
+/* Process incoming JSON counter data */
+static int
+cconn_process_data(struct cconn *io, yajl_struct *yajl, yajl_handle hand)
+{
+ int ret;
+ struct values_tmp *vtmp = calloc(1, sizeof(struct values_tmp) * 1);
+ if(!vtmp)
+ {
+ return -ENOMEM;
+ }
+
+ vtmp->vlist = (value_list_t)VALUE_LIST_INIT;
+ sstrncpy(vtmp->vlist.host, hostname_g, sizeof(vtmp->vlist.host));
+ sstrncpy(vtmp->vlist.plugin, "ceph", sizeof(vtmp->vlist.plugin));
+ sstrncpy(vtmp->vlist.plugin_instance, io->d->name, sizeof(vtmp->vlist.plugin_instance));
+
+ vtmp->d = io->d;
+ vtmp->avgcount_exists = -1;
+ vtmp->latency_index = 0;
+ vtmp->index = 0;
+ yajl->handler_arg = vtmp;
+ ret = traverse_json(io->json, io->json_len, hand);
+ sfree(vtmp);
+ return ret;
+}
+
+/**
+ * Initiate JSON parsing and print error if one occurs
+ */
+static int cconn_process_json(struct cconn *io)
+{
+ if((io->request_type != ASOK_REQ_DATA) &&
+ (io->request_type != ASOK_REQ_SCHEMA))
+ {
+ return -EDOM;
+ }
+
+ int result = 1;
+ yajl_handle hand;
+ yajl_status status;
+
+ hand = yajl_alloc(&callbacks,
+#if HAVE_YAJL_V2
+ /* alloc funcs = */ NULL,
+#else
+ /* alloc funcs = */ NULL, NULL,
+#endif
+ /* context = */ (void *)(&io->yajl));
+
+ if(!hand)
+ {
+ ERROR ("ceph plugin: yajl_alloc failed.");
+ return ENOMEM;
+ }
+
+ io->yajl.depth = 0;
+
+ switch(io->request_type)
+ {
+ case ASOK_REQ_DATA:
+ io->yajl.handler = node_handler_fetch_data;
+ result = cconn_process_data(io, &io->yajl, hand);
+ break;
+ case ASOK_REQ_SCHEMA:
+ //init daemon specific variables
+ io->d->ds_num = 0;
+ io->d->last_idx = 0;
+ io->d->last_poll_data = NULL;
+ io->yajl.handler = node_handler_define_schema;
+ io->yajl.handler_arg = io->d;
+ result = traverse_json(io->json, io->json_len, hand);
+ break;
+ }
+
+ if(result)
+ {
+ goto done;
+ }
+
+#if HAVE_YAJL_V2
+ status = yajl_complete_parse(hand);
+#else
+ status = yajl_parse_complete(hand);
+#endif
+
+ if (status != yajl_status_ok)
+ {
+ unsigned char *errmsg = yajl_get_error (hand, /* verbose = */ 0,
+ /* jsonText = */ NULL, /* jsonTextLen = */ 0);
+ ERROR ("ceph plugin: yajl_parse_complete failed: %s",
+ (char *) errmsg);
+ yajl_free_error (hand, errmsg);
+ yajl_free (hand);
+ return 1;
+ }
+
+ done:
+ yajl_free (hand);
+ return result;
+}
+
+static int cconn_validate_revents(struct cconn *io, int revents)
+{
+ if(revents & POLLERR)
+ {
+ ERROR("ceph plugin: cconn_validate_revents(name=%s): got POLLERR",
+ io->d->name);
+ return -EIO;
+ }
+ switch (io->state)
+ {
+ case CSTATE_WRITE_REQUEST:
+ return (revents & POLLOUT) ? 0 : -EINVAL;
+ case CSTATE_READ_VERSION:
+ case CSTATE_READ_AMT:
+ case CSTATE_READ_JSON:
+ return (revents & POLLIN) ? 0 : -EINVAL;
+ default:
+ ERROR("ceph plugin: cconn_validate_revents(name=%s) got to "
+ "illegal state on line %d", io->d->name, __LINE__);
+ return -EDOM;
+ }
+}
+
+/** Handle a network event for a connection */
+static int cconn_handle_event(struct cconn *io)
+{
+ int ret;
+ switch (io->state)
+ {
+ case CSTATE_UNCONNECTED:
+ ERROR("ceph plugin: cconn_handle_event(name=%s) got to illegal "
+ "state on line %d", io->d->name, __LINE__);
+
+ return -EDOM;
+ case CSTATE_WRITE_REQUEST:
+ {
+ char cmd[32];
+ snprintf(cmd, sizeof(cmd), "%s%d%s", "{ \"prefix\": \"",
+ io->request_type, "\" }\n");
+ size_t cmd_len = strlen(cmd);
+ RETRY_ON_EINTR(ret,
+ write(io->asok, ((char*)&cmd) + io->amt, cmd_len - io->amt));
+ DEBUG("ceph plugin: cconn_handle_event(name=%s,state=%d,amt=%d,ret=%d)",
+ io->d->name, io->state, io->amt, ret);
+ if(ret < 0)
+ {
+ return ret;
+ }
+ io->amt += ret;
+ if(io->amt >= cmd_len)
+ {
+ io->amt = 0;
+ switch (io->request_type)
+ {
+ case ASOK_REQ_VERSION:
+ io->state = CSTATE_READ_VERSION;
+ break;
+ default:
+ io->state = CSTATE_READ_AMT;
+ break;
+ }
+ }
+ return 0;
+ }
+ case CSTATE_READ_VERSION:
+ {
+ RETRY_ON_EINTR(ret,
+ read(io->asok, ((char*)(&io->d->version)) + io->amt,
+ sizeof(io->d->version) - io->amt));
+ DEBUG("ceph plugin: cconn_handle_event(name=%s,state=%d,ret=%d)",
+ io->d->name, io->state, ret);
+ if(ret < 0)
+ {
+ return ret;
+ }
+ io->amt += ret;
+ if(io->amt >= sizeof(io->d->version))
+ {
+ io->d->version = ntohl(io->d->version);
+ if(io->d->version != 1)
+ {
+ ERROR("ceph plugin: cconn_handle_event(name=%s) not "
+ "expecting version %d!", io->d->name, io->d->version);
+ return -ENOTSUP;
+ }
+ DEBUG("ceph plugin: cconn_handle_event(name=%s): identified as "
+ "version %d", io->d->name, io->d->version);
+ io->amt = 0;
+ cconn_close(io);
+ io->request_type = ASOK_REQ_SCHEMA;
+ }
+ return 0;
+ }
+ case CSTATE_READ_AMT:
+ {
+ RETRY_ON_EINTR(ret,
+ read(io->asok, ((char*)(&io->json_len)) + io->amt,
+ sizeof(io->json_len) - io->amt));
+ DEBUG("ceph plugin: cconn_handle_event(name=%s,state=%d,ret=%d)",
+ io->d->name, io->state, ret);
+ if(ret < 0)
+ {
+ return ret;
+ }
+ io->amt += ret;
+ if(io->amt >= sizeof(io->json_len))
+ {
+ io->json_len = ntohl(io->json_len);
+ io->amt = 0;
+ io->state = CSTATE_READ_JSON;
+ io->json = calloc(1, io->json_len + 1);
+ if(!io->json)
+ {
+ ERROR("ceph plugin: error callocing io->json");
+ return -ENOMEM;
+ }
+ }
+ return 0;
+ }
+ case CSTATE_READ_JSON:
+ {
+ RETRY_ON_EINTR(ret,
+ read(io->asok, io->json + io->amt, io->json_len - io->amt));
+ DEBUG("ceph plugin: cconn_handle_event(name=%s,state=%d,ret=%d)",
+ io->d->name, io->state, ret);
+ if(ret < 0)
+ {
+ return ret;
+ }
+ io->amt += ret;
+ if(io->amt >= io->json_len)
+ {
+ ret = cconn_process_json(io);
+ if(ret)
+ {
+ return ret;
+ }
+ cconn_close(io);
+ io->request_type = ASOK_REQ_NONE;
+ }
+ return 0;
+ }
+ default:
+ ERROR("ceph plugin: cconn_handle_event(name=%s) got to illegal "
+ "state on line %d", io->d->name, __LINE__);
+ return -EDOM;
+ }
+}
+
+static int cconn_prepare(struct cconn *io, struct pollfd* fds)
+{
+ int ret;
+ if(io->request_type == ASOK_REQ_NONE)
+ {
+ /* The request has already been serviced. */
+ return 0;
+ }
+ else if((io->request_type == ASOK_REQ_DATA) && (io->d->ds_num == 0))
+ {
+ /* If there are no counters to report on, don't bother
+ * connecting */
+ return 0;
+ }
+
+ switch (io->state)
+ {
+ case CSTATE_UNCONNECTED:
+ ret = cconn_connect(io);
+ if(ret > 0)
+ {
+ return -ret;
+ }
+ else if(ret < 0)
+ {
+ return ret;
+ }
+ fds->fd = io->asok;
+ fds->events = POLLOUT;
+ return 1;
+ case CSTATE_WRITE_REQUEST:
+ fds->fd = io->asok;
+ fds->events = POLLOUT;
+ return 1;
+ case CSTATE_READ_VERSION:
+ case CSTATE_READ_AMT:
+ case CSTATE_READ_JSON:
+ fds->fd = io->asok;
+ fds->events = POLLIN;
+ return 1;
+ default:
+ ERROR("ceph plugin: cconn_prepare(name=%s) got to illegal state "
+ "on line %d", io->d->name, __LINE__);
+ return -EDOM;
+ }
+}
+
+/** Returns the difference between two struct timevals in milliseconds.
+ * On overflow, we return max/min int.
+ */
+static int milli_diff(const struct timeval *t1, const struct timeval *t2)
+{
+ int64_t ret;
+ int sec_diff = t1->tv_sec - t2->tv_sec;
+ int usec_diff = t1->tv_usec - t2->tv_usec;
+ ret = usec_diff / 1000;
+ ret += (sec_diff * 1000);
+ return (ret > INT_MAX) ? INT_MAX : ((ret < INT_MIN) ? INT_MIN : (int)ret);
+}
+
+/** This handles the actual network I/O to talk to the Ceph daemons.
+ */
+static int cconn_main_loop(uint32_t request_type)
+{
+ int i, ret, some_unreachable = 0;
+ struct timeval end_tv;
+ struct cconn io_array[g_num_daemons];
+
+ DEBUG("ceph plugin: entering cconn_main_loop(request_type = %d)", request_type);
+
+ /* create cconn array */
+ memset(io_array, 0, sizeof(io_array));
+ for(i = 0; i < g_num_daemons; ++i)
+ {
+ io_array[i].d = g_daemons[i];
+ io_array[i].request_type = request_type;
+ io_array[i].state = CSTATE_UNCONNECTED;
+ }
+
+ /** Calculate the time at which we should give up */
+ gettimeofday(&end_tv, NULL);
+ end_tv.tv_sec += CEPH_TIMEOUT_INTERVAL;
+
+ while (1)
+ {
+ int nfds, diff;
+ struct timeval tv;
+ struct cconn *polled_io_array[g_num_daemons];
+ struct pollfd fds[g_num_daemons];
+ memset(fds, 0, sizeof(fds));
+ nfds = 0;
+ for(i = 0; i < g_num_daemons; ++i)
+ {
+ struct cconn *io = io_array + i;
+ ret = cconn_prepare(io, fds + nfds);
+ if(ret < 0)
+ {
+ WARNING("ceph plugin: cconn_prepare(name=%s,i=%d,st=%d)=%d",
+ io->d->name, i, io->state, ret);
+ cconn_close(io);
+ io->request_type = ASOK_REQ_NONE;
+ some_unreachable = 1;
+ }
+ else if(ret == 1)
+ {
+ polled_io_array[nfds++] = io_array + i;
+ }
+ }
+ if(nfds == 0)
+ {
+ /* finished */
+ ret = 0;
+ goto done;
+ }
+ gettimeofday(&tv, NULL);
+ diff = milli_diff(&end_tv, &tv);
+ if(diff <= 0)
+ {
+ /* Timed out */
+ ret = -ETIMEDOUT;
+ WARNING("ceph plugin: cconn_main_loop: timed out.");
+ goto done;
+ }
+ RETRY_ON_EINTR(ret, poll(fds, nfds, diff));
+ if(ret < 0)
+ {
+ ERROR("ceph plugin: poll(2) error: %d", ret);
+ goto done;
+ }
+ for(i = 0; i < nfds; ++i)
+ {
+ struct cconn *io = polled_io_array[i];
+ int revents = fds[i].revents;
+ if(revents == 0)
+ {
+ /* do nothing */
+ }
+ else if(cconn_validate_revents(io, revents))
+ {
+ WARNING("ceph plugin: cconn(name=%s,i=%d,st=%d): "
+ "revents validation error: "
+ "revents=0x%08x", io->d->name, i, io->state, revents);
+ cconn_close(io);
+ io->request_type = ASOK_REQ_NONE;
+ some_unreachable = 1;
+ }
+ else
+ {
+ int ret = cconn_handle_event(io);
+ if(ret)
+ {
+ WARNING("ceph plugin: cconn_handle_event(name=%s,"
+ "i=%d,st=%d): error %d", io->d->name, i, io->state, ret);
+ cconn_close(io);
+ io->request_type = ASOK_REQ_NONE;
+ some_unreachable = 1;
+ }
+ }
+ }
+ }
+ done: for(i = 0; i < g_num_daemons; ++i)
+ {
+ cconn_close(io_array + i);
+ }
+ if(some_unreachable)
+ {
+ DEBUG("ceph plugin: cconn_main_loop: some Ceph daemons were unreachable.");
+ }
+ else
+ {
+ DEBUG("ceph plugin: cconn_main_loop: reached all Ceph daemons :)");
+ }
+ return ret;
+}
+
+static int ceph_read(void)
+{
+ return cconn_main_loop(ASOK_REQ_DATA);
+}
+
+/******* lifecycle *******/
+static int ceph_init(void)
+{
+ int ret;
+ ceph_daemons_print();
+
+ ret = cconn_main_loop(ASOK_REQ_VERSION);
+
+ return (ret) ? ret : 0;
+}
+
+static int ceph_shutdown(void)
+{
+ int i;
+ for(i = 0; i < g_num_daemons; ++i)
+ {
+ ceph_daemon_free(g_daemons[i]);
+ }
+ sfree(g_daemons);
+ g_daemons = NULL;
+ g_num_daemons = 0;
+ DEBUG("ceph plugin: finished ceph_shutdown");
+ return 0;
+}
+
+void module_register(void)
+{
+ plugin_register_complex_config("ceph", ceph_config);
+ plugin_register_init("ceph", ceph_init);
+ plugin_register_read("ceph", ceph_read);
+ plugin_register_shutdown("ceph", ceph_shutdown);
+}
projects / collectd.git / commitdiff