/**
* collectd - src/ceph.c
* Copyright (C) 2011 New Dream Network
+ * Copyright (C) 2015 Florian octo Forster
*
* 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
* 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>
+ * Colin McCabe <cmccabe at alumni.cmu.edu>
+ * Dennis Zou <yunzou at cisco.com>
+ * Dan Ryder <daryder at cisco.com>
+ * Florian octo Forster <octo at collectd.org>
**/
+#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 <json/json.h>
-#include <json/json_object_private.h> /* need for struct json_object_iter */
+#include <yajl/yajl_parse.h>
+#if HAVE_YAJL_YAJL_VERSION_H
+#include <yajl/yajl_version.h>
+#endif
+#ifdef HAVE_SYS_CAPABILITY_H
+#include <sys/capability.h>
+#endif
+
+#include <inttypes.h>
#include <limits.h>
+#include <math.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>
-#define MAX_RRD_DS_NAME_LEN 20
-
-#define RETRY_ON_EINTR(ret, expr) \
- while(1) { \
- ret = expr; \
- if (ret >= 0) \
- break; \
- ret = -errno; \
- if (ret != -EINTR) \
- break; \
- }
+
+#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))
+#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 */
+static const char *const 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];
-
- int dset_num;
-
- /** Path to the socket that we use to talk to the ceph daemon */
- char asok_path[UNIX_DOMAIN_SOCK_PATH_MAX];
-
- /** The set of key/value pairs that this daemon reports
- * dset.type The daemon name
- * dset.ds_num Number of data sources (key/value pairs)
- * dset.ds Dynamically allocated array of key/value pairs
- */
- //struct data_set_s dset;
- /** Dynamically allocated array **/
- struct data_set_s *dset;
- int **pc_types;
+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;
};
-enum perfcounter_type_d
-{
- PERFCOUNTER_LATENCY = 0x4, PERFCOUNTER_DERIVE = 0x8,
+/******* 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;
+
+ char *key;
+ char *stack[YAJL_MAX_DEPTH];
+ size_t 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;
+static size_t g_num_daemons = 0;
-static void ceph_daemon_print(const struct ceph_daemon *d)
-{
- DEBUG("name=%s, asok_path=%s", d->name, d->asok_path);
-}
+/**
+ * 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;
+};
-static void ceph_daemons_print(void)
-{
- int i;
- for (i = 0; i < g_num_daemons; ++i)
- {
- ceph_daemon_print(g_daemons[i]);
- }
-}
+/**
+ * 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;
+};
-struct last_data **last_poll_data = NULL;
-int last_idx = 0;
-
-/*static void ceph_daemon_free(struct ceph_daemon *d)
- {
- plugin_unregister_data_set(d->dset.type);
- sfree(d->dset.ds);
- sfree(d);
- }*/
-static void ceph_daemon_free(struct ceph_daemon *d)
-{
- int i = 0;
- for (; i < d->dset_num; i++)
- {
- plugin_unregister_data_set((d->dset + i)->type);
- sfree(d->dset->ds);
- sfree(d->pc_types[i]);
- }
- sfree(d->dset);
- sfree(d->pc_types);
- sfree(d);
-}
+/******* network I/O *******/
+enum cstate_t {
+ CSTATE_UNCONNECTED = 0,
+ CSTATE_WRITE_REQUEST,
+ CSTATE_READ_VERSION,
+ CSTATE_READ_AMT,
+ CSTATE_READ_JSON,
+};
-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];
- 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++)
- {
- strcat(tmp, keys[i]);
- }
- tmp[DATA_MAX_NAME_LEN - 1] = '\0';
- /** to coordinate limitation of length of ds name from RRD
- * we will truncate ds_name
- * when the its length is more than
- * MAX_RRD_DS_NAME_LEN
- */
- if (strlen(tmp) > MAX_RRD_DS_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, MAX_RRD_DS_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;
- }
-}
-static int parse_keys(const char *key_str, char *dset_name, char *ds_name)
-{
- char *ptr, *rptr;
- size_t dset_name_len = 0;
- size_t ds_name_len = 0;
- char tmp_ds_name[DATA_MAX_NAME_LEN];
- memset(tmp_ds_name, 0, sizeof(tmp_ds_name));
- if (dset_name == NULL || ds_name == NULL || key_str == NULL
- || key_str[0] == '\0' || dset_name[0] != '\0' || ds_name[0] != '\0')
- {
- return -1;
- }
- if ((ptr = strchr(key_str, '.')) == NULL
- || (rptr = strrchr(key_str, '.')) == NULL)
- {
- strncpy(dset_name, key_str, DATA_MAX_NAME_LEN - 1);
- strncpy(tmp_ds_name, key_str, DATA_MAX_NAME_LEN - 1);
- goto compact;
- }
- dset_name_len =
- (ptr - key_str) > (DATA_MAX_NAME_LEN - 1) ?
- (DATA_MAX_NAME_LEN - 1) : (ptr - key_str);
- memcpy(dset_name, key_str, dset_name_len);
- ds_name_len =
- (rptr - ptr) > DATA_MAX_NAME_LEN ? DATA_MAX_NAME_LEN : (rptr - ptr);
- if (ds_name_len == 0)
- { /** only have two keys **/
- if (!strncmp(rptr + 1, "type", 4))
- {/** if last key is "type",ignore **/
- strncpy(tmp_ds_name, dset_name, DATA_MAX_NAME_LEN - 1);
- }
- else
- {/** if last key isn't "type", copy last key **/
- strncpy(tmp_ds_name, rptr + 1, DATA_MAX_NAME_LEN - 1);
- }
- }
- else if (!strncmp(rptr + 1, "type", 4))
- {/** more than two keys **/
- memcpy(tmp_ds_name, ptr + 1, ds_name_len - 1);
- }
- else
- {/** copy whole keys **/
- strncpy(tmp_ds_name, ptr + 1, DATA_MAX_NAME_LEN - 1);
- }
- compact: compact_ds_name(tmp_ds_name, ds_name);
- return 0;
+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; }
+
+#define BUFFER_ADD(dest, src) \
+ do { \
+ size_t dest_size = sizeof(dest); \
+ size_t dest_len = strlen(dest); \
+ if (dest_size > dest_len) { \
+ sstrncpy((dest) + dest_len, (src), dest_size - dest_len); \
+ } \
+ (dest)[dest_size - 1] = 0; \
+ } while (0)
+
+static int ceph_cb_number(void *ctx, const char *number_val,
+ yajl_len_t number_len) {
+ yajl_struct *state = (yajl_struct *)ctx;
+ char buffer[number_len + 1];
+ char key[2 * DATA_MAX_NAME_LEN] = {0};
+ _Bool latency_type = 0;
+ int status;
+
+ memcpy(buffer, number_val, number_len);
+ buffer[sizeof(buffer) - 1] = '\0';
+
+ for (size_t i = 0; i < state->depth; i++) {
+ if (state->stack[i] == NULL)
+ continue;
+
+ if (strlen(key) != 0)
+ BUFFER_ADD(key, ".");
+ BUFFER_ADD(key, state->stack[i]);
+ }
+
+ /* Special case for latency metrics. */
+ if ((strcmp("avgcount", state->key) == 0) ||
+ (strcmp("sum", state->key) == 0)) {
+ latency_type = 1;
+
+ /* depth >= 2 => (stack[-1] != NULL && stack[-2] != NULL) */
+ assert((state->depth < 2) || ((state->stack[state->depth - 1] != NULL) &&
+ (state->stack[state->depth - 2] != NULL)));
+
+ /* Super-special case for filestore.journal_wr_bytes.avgcount: 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 (convert_special_metrics && (state->depth >= 2) &&
+ (strcmp("filestore", state->stack[state->depth - 2]) == 0) &&
+ (strcmp("journal_wr_bytes", state->stack[state->depth - 1]) == 0) &&
+ (strcmp("avgcount", state->key) == 0)) {
+ DEBUG("ceph plugin: Skipping avgcount for filestore.JournalWrBytes");
+ return CEPH_CB_CONTINUE;
+ }
+ } else /* not a latency type */
+ {
+ BUFFER_ADD(key, ".");
+ BUFFER_ADD(key, state->key);
+ }
+
+ status = state->handler(state->handler_arg, buffer, key);
+ if ((status == RETRY_AVGCOUNT) && latency_type) {
+ /* Add previously skipped part of the key, either "avgcount" or "sum",
+ * and try again. */
+ BUFFER_ADD(key, ".");
+ BUFFER_ADD(key, state->key);
+
+ status = state->handler(state->handler_arg, buffer, key);
+ }
+
+ if (status != 0) {
+ ERROR("ceph plugin: JSON handler failed with status %d.", status);
+ return CEPH_CB_ABORT;
+ }
+
+ return CEPH_CB_CONTINUE;
}
-int get_matching_dset(const struct ceph_daemon *d, const char *name)
-{
- int idx;
- for (idx = 0; idx < d->dset_num; ++idx)
- {
- if (strcmp(d->dset[idx].type, name) == 0)
- {
- return idx;
- }
- }
- return -1;
+static int ceph_cb_string(void *ctx, const unsigned char *string_val,
+ yajl_len_t string_len) {
+ return CEPH_CB_CONTINUE;
}
-int get_matching_value(const struct data_set_s *dset, const char *name,
- int num_values)
-{
- int idx;
- for (idx = 0; idx < num_values; ++idx)
- {
- if (strcmp(dset->ds[idx].name, name) == 0)
- {
- return idx;
- }
- }
- return -1;
+static int ceph_cb_start_map(void *ctx) {
+ yajl_struct *state = (yajl_struct *)ctx;
+
+ /* Push key to the stack */
+ if (state->depth == YAJL_MAX_DEPTH)
+ return CEPH_CB_ABORT;
+
+ state->stack[state->depth] = state->key;
+ state->depth++;
+ state->key = NULL;
+
+ return CEPH_CB_CONTINUE;
}
-static int ceph_daemon_add_ds_entry(struct ceph_daemon *d, const char *name,
- int pc_type)
-{
- struct data_source_s *ds;
- struct data_set_s *dset;
- struct data_set_s *dset_array;
- int **pc_types_array = NULL;
- int *pc_types;
- int *pc_types_new;
- int idx = 0;
- if (strlen(name) + 1 > DATA_MAX_NAME_LEN)
- return -ENAMETOOLONG;
- char dset_name[DATA_MAX_NAME_LEN];
- char ds_name[MAX_RRD_DS_NAME_LEN];
- memset(dset_name, 0, sizeof(dset_name));
- memset(ds_name, 0, sizeof(ds_name));
- if (parse_keys(name, dset_name, ds_name))
- return 1;
- idx = get_matching_dset(d, dset_name);
- if (idx == -1)
- {/* need to add a dset **/
- dset_array = realloc(d->dset,
- sizeof(struct data_set_s) * (d->dset_num + 1));
- if (!dset_array)
- return -ENOMEM;
- pc_types_array = realloc(d->pc_types,
- sizeof(int *) * (d->dset_num + 1));
- if (!pc_types_array)
- return -ENOMEM;
- dset = &dset_array[d->dset_num];
- /** this step is very important, otherwise,
- * realloc for dset->ds will tricky because of
- * a random addr in dset->ds
- */
- memset(dset, 0, sizeof(struct data_set_s));
- dset->ds_num = 0;
- snprintf(dset->type, DATA_MAX_NAME_LEN, "%s", dset_name);
- pc_types = pc_types_array[d->dset_num] = NULL;
- d->dset = dset_array;
- }
- else
- {
- dset = &d->dset[idx];
- pc_types = d->pc_types[idx];
- }
- struct data_source_s *ds_array = realloc(dset->ds,
- sizeof(struct data_source_s) * (dset->ds_num + 1));
- if (!ds_array)
- {
- return -ENOMEM;
- }
- pc_types_new = realloc(pc_types, sizeof(int) * (dset->ds_num + 1));
- if (!pc_types_new)
- {
- return -ENOMEM;
- }
- dset->ds = ds_array;
- if (idx == -1)
- {
- pc_types_array[d->dset_num] = pc_types_new;
- d->pc_types = pc_types_array;
- d->pc_types[d->dset_num][dset->ds_num] = pc_type;
- d->dset_num++;
- }
- else
- {
- d->pc_types[idx] = pc_types_new;
- d->pc_types[idx][dset->ds_num] = pc_type;
- }
- ds = &ds_array[dset->ds_num++];
- snprintf(ds->name, MAX_RRD_DS_NAME_LEN, "%s", ds_name);
- ds->type =
- (pc_type & PERFCOUNTER_DERIVE) ? DS_TYPE_DERIVE : DS_TYPE_GAUGE;
-
- /** Special case for filestore:JournalWrBytes, we don't want to
- use what the Ceph schema gives us (sum/count pair) */
- if((strcmp(dset_name,"filestore") == 0) &&
- (strcmp(ds_name,"JournalWrBytes") == 0))
- {
- ds->type = DS_TYPE_DERIVE;
- }
- /** Use min of 0 for DERIVE types so we dont' get negative values
- on Ceph service restart */
- if(ds->type == DS_TYPE_DERIVE)
- {
- ds->min = 0;
- }
- else if(ds->type == DS_TYPE_GAUGE)
- {
- ds->min = NAN;
- }
+static int ceph_cb_end_map(void *ctx) {
+ yajl_struct *state = (yajl_struct *)ctx;
- ds->max = NAN;
- return 0;
+ /* Pop key from the stack */
+ if (state->depth == 0)
+ return CEPH_CB_ABORT;
+
+ sfree(state->key);
+ state->depth--;
+ state->key = state->stack[state->depth];
+ state->stack[state->depth] = NULL;
+
+ return CEPH_CB_CONTINUE;
}
-/******* 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 ceph_cb_map_key(void *ctx, const unsigned char *key,
+ yajl_len_t string_len) {
+ yajl_struct *state = (yajl_struct *)ctx;
+ size_t sz = ((size_t)string_len) + 1;
+
+ sfree(state->key);
+ state->key = malloc(sz);
+ if (state->key == NULL) {
+ ERROR("ceph plugin: malloc failed.");
+ return CEPH_CB_ABORT;
+ }
+
+ memmove(state->key, key, sz - 1);
+ state->key[sz - 1] = 0;
+
+ return CEPH_CB_CONTINUE;
}
-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));
+static int ceph_cb_start_array(void *ctx) { return CEPH_CB_CONTINUE; }
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING("ceph plugin: `Daemon' blocks need exactly one string argument.");
- return (-1);
- }
+static int ceph_cb_end_array(void *ctx) { return CEPH_CB_CONTINUE; }
- 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 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 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)
- return ret;
- }
- else
- {
- WARNING("ceph plugin: ignoring unknown option %s", child->key);
- }
- }
- return 0;
+static void ceph_daemons_print(void) {
+ for (size_t i = 0; i < g_num_daemons; ++i) {
+ ceph_daemon_print(g_daemons[i]);
+ }
}
-/******* JSON parsing *******/
-typedef int (*node_handler_t)(void*, json_object*, const char*);
-
-/** Perform a depth-first traversal of the JSON parse tree,
- * calling node_handler at each node.*/
-static int traverse_json_impl(json_object *jo, char *key, int max_key,
- node_handler_t handler, void *handler_arg)
-{
- struct json_object_iter iter;
- int ret, plen, klen;
-
- if (json_object_get_type(jo) != json_type_object)
- return 0;
- plen = strlen(key);
- json_object_object_foreachC(jo, iter)
- {
- klen = strlen(iter.key);
- if (plen + klen + 2 > max_key)
- return -ENAMETOOLONG;
- if (plen != 0)
- strncat(key, ".", max_key); /* really should be strcat */
- strncat(key, iter.key, max_key);
-
- ret = handler(handler_arg, iter.val, key);
- if (ret == 1)
- {
- ret = traverse_json_impl(iter.val, key, max_key, handler,
- handler_arg);
- }
- else if (ret != 0)
- {
- return ret;
- }
-
- key[plen] = '\0';
- }
- return 0;
+static void ceph_daemon_free(struct ceph_daemon *d) {
+ for (int i = 0; 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 (int 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 removed the special characters ":", "_", "-" and "+" from the
+ * intput string. Characters following these special characters are capitalized.
+ * Trailing "+" and "-" characters are replaces with the strings "Plus" and
+ * "Minus". */
+static int compact_ds_name(char *buffer, size_t buffer_size, char const *src) {
+ char *src_copy;
+ size_t src_len;
+ char *ptr = buffer;
+ size_t ptr_size = buffer_size;
+ _Bool append_plus = 0;
+ _Bool append_minus = 0;
+
+ if ((buffer == NULL) || (buffer_size <= strlen("Minus")) || (src == NULL))
+ return EINVAL;
+
+ src_copy = strdup(src);
+ src_len = strlen(src);
+
+ /* Remove trailing "+" and "-". */
+ if (src_copy[src_len - 1] == '+') {
+ append_plus = 1;
+ src_len--;
+ src_copy[src_len] = 0;
+ } else if (src_copy[src_len - 1] == '-') {
+ append_minus = 1;
+ src_len--;
+ src_copy[src_len] = 0;
+ }
+
+ /* Split at special chars, capitalize first character, append to buffer. */
+ char *dummy = src_copy;
+ char *token;
+ char *save_ptr = NULL;
+ while ((token = strtok_r(dummy, ":_-+", &save_ptr)) != NULL) {
+ size_t len;
+
+ dummy = NULL;
+
+ token[0] = toupper((int)token[0]);
+
+ assert(ptr_size > 1);
+
+ len = strlen(token);
+ if (len >= ptr_size)
+ len = ptr_size - 1;
+
+ assert(len > 0);
+ assert(len < ptr_size);
+
+ sstrncpy(ptr, token, len + 1);
+ ptr += len;
+ ptr_size -= len;
+
+ assert(*ptr == 0);
+ if (ptr_size <= 1)
+ break;
+ }
+
+ /* Append "Plus" or "Minus" if "+" or "-" has been stripped above. */
+ if (append_plus || append_minus) {
+ char const *append = "Plus";
+ if (append_minus)
+ append = "Minus";
+
+ size_t offset = buffer_size - (strlen(append) + 1);
+ if (offset > strlen(buffer))
+ offset = strlen(buffer);
+
+ sstrncpy(buffer + offset, append, buffer_size - offset);
+ }
+
+ sfree(src_copy);
+ return 0;
}
-static int traverse_json(const char *json, node_handler_t handler,
- void *handler_arg)
-{
- json_object *root;
- char buf[128];
- buf[0] = '\0';
- root = json_tokener_parse(json);
- if (!root)
- return -EDOM;
- int result = traverse_json_impl(root, buf, sizeof(buf), handler, handler_arg);
- json_object_put(root);
- return result;
+static _Bool has_suffix(char const *str, char const *suffix) {
+ size_t str_len = strlen(str);
+ size_t suffix_len = strlen(suffix);
+ size_t offset;
+
+ if (suffix_len > str_len)
+ return 0;
+ offset = str_len - suffix_len;
+
+ if (strcmp(str + offset, suffix) == 0)
+ return 1;
+
+ return 0;
}
-static int node_handler_define_schema(void *arg, json_object *jo,
- const char *key)
-{
- struct ceph_daemon *d = (struct ceph_daemon *) arg;
- int pc_type;
- if (json_object_get_type(jo) == json_type_object)
- return 1;
- else if (json_object_get_type(jo) != json_type_int)
- return -EDOM;
- pc_type = json_object_get_int(jo);
- DEBUG("\nceph_daemon_add_ds_entry(d=%s,key=%s,pc_type=%04x)",
- d->name, key, pc_type);
- return ceph_daemon_add_ds_entry(d, key, pc_type);
+/* count_parts returns the number of elements a "foo.bar.baz" style key has. */
+static size_t count_parts(char const *key) {
+ size_t parts_num = 0;
+
+ for (const char *ptr = key; ptr != NULL; ptr = strchr(ptr + 1, '.'))
+ parts_num++;
+
+ return parts_num;
}
-struct values_holder
-{
- int values_len;
- value_t *values;
-};
-/** A set of values_t data that we build up in memory while parsing the JSON. */
-struct values_tmp
-{
- struct ceph_daemon *d;
- int holder_num;
- struct values_holder vh[0];
-};
+/**
+ * Parse key to remove "type" if this is for schema and initiate compaction
+ */
+static int parse_keys(char *buffer, size_t buffer_size, const char *key_str) {
+ char tmp[2 * buffer_size];
-struct last_data
-{
- char dset_name[DATA_MAX_NAME_LEN];
- char ds_name[MAX_RRD_DS_NAME_LEN];
- double last_sum;
- uint64_t last_count;
-};
+ if (buffer == NULL || buffer_size == 0 || key_str == NULL ||
+ strlen(key_str) == 0)
+ return EINVAL;
-int add_last(const char *dset_n, const char *ds_n, double cur_sum, uint64_t cur_count)
-{
- last_poll_data[last_idx] = malloc(1 * sizeof(struct last_data));
- if(!last_poll_data[last_idx])
- {
- return ENOMEM;
- }
- sstrncpy(last_poll_data[last_idx]->dset_name,dset_n,sizeof(last_poll_data[last_idx]->dset_name));
- sstrncpy(last_poll_data[last_idx]->ds_name,ds_n,sizeof(last_poll_data[last_idx]->ds_name));
- last_poll_data[last_idx]->last_sum = cur_sum;
- last_poll_data[last_idx]->last_count = cur_count;
- last_idx++;
- return 1;
+ if ((count_parts(key_str) > 2) && has_suffix(key_str, ".type")) {
+ /* strip ".type" suffix iff the key has more than two parts. */
+ size_t sz = strlen(key_str) - strlen(".type") + 1;
+
+ if (sz > sizeof(tmp))
+ sz = sizeof(tmp);
+ sstrncpy(tmp, key_str, sz);
+ } else {
+ sstrncpy(tmp, key_str, sizeof(tmp));
+ }
+
+ return compact_ds_name(buffer, buffer_size, tmp);
}
-int update_last(const char *dset_n, const char *ds_n, double cur_sum, uint64_t cur_count)
-{
- int i;
- for(i = 0; i < last_idx; i++)
- {
- if(strcmp(last_poll_data[i]->dset_name,dset_n) == 0)
- {
- if(strcmp(last_poll_data[i]->ds_name,ds_n) == 0)
- {
- last_poll_data[i]->last_sum = cur_sum;
- last_poll_data[i]->last_count = cur_count;
- return 1;
- }
- }
- }
+/**
+ * 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];
+
+ 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(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(ds_name, sizeof(ds_name), 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;
+}
- if(NULL == last_poll_data)
- {
- last_poll_data = malloc(1 * sizeof(struct last_data *));
- if(!last_poll_data)
- {
- return ENOMEM;
- }
- }
- else
- {
- struct last_data **tmp_last = realloc(last_poll_data, ((last_idx+1) * sizeof(struct last_data *)));
- if(!tmp_last)
- {
- return ENOMEM;
- }
- last_poll_data = tmp_last;
- }
- add_last(dset_n,ds_n,cur_sum,cur_count);
- return -1;
+/******* 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;
}
-double get_last_avg(const char *dset_n, const char *ds_n, double cur_sum, uint64_t cur_count)
-{
- int i;
- double result = -1.1;
- double sum_delt = 0.0;
- uint64_t count_delt = 0;
- for(i = 0; i < last_idx; i++)
- {
- if(strcmp(last_poll_data[i]->dset_name,dset_n) == 0)
- {
- if(strcmp(last_poll_data[i]->ds_name,ds_n) == 0)
- {
- if(cur_count < last_poll_data[i]->last_count)
- {
- break;
- }
- sum_delt = (cur_sum - last_poll_data[i]->last_sum);
- count_delt = (cur_count - last_poll_data[i]->last_count);
- result = (sum_delt / count_delt);
- break;
- }
- }
- }
+static int cc_handle_bool(struct oconfig_item_s *item, int *dest) {
+ if (item->values_num != 1) {
+ return -ENOTSUP;
+ }
- result = (result == -1.1) ? NAN : result;
- update_last(dset_n,ds_n,cur_sum,cur_count);
- return result;
+ if (item->values[0].type != OCONFIG_TYPE_BOOLEAN) {
+ return -ENOTSUP;
+ }
+
+ *dest = (item->values[0].value.boolean) ? 1 : 0;
+ return 0;
}
-static int node_handler_fetch_data(void *arg, json_object *jo, const char *key)
-{
- int dset_idx, ds_idx;
- value_t *uv;
- char dset_name[DATA_MAX_NAME_LEN];
- char ds_name[MAX_RRD_DS_NAME_LEN];
- struct values_tmp *vtmp = (struct values_tmp*) arg;
- memset(dset_name, 0, sizeof(dset_name));
- memset(ds_name, 0, sizeof(ds_name));
- if (parse_keys(key, dset_name, ds_name))
- return 1;DEBUG("enter node_handler_fetch_data");
- dset_idx = get_matching_dset(vtmp->d, dset_name);
- if (dset_idx == -1)
- return 1;
- ds_idx = get_matching_value(&vtmp->d->dset[dset_idx], ds_name,
- vtmp->d->dset[dset_idx].ds_num);
- if (ds_idx == -1)
- return 1;DEBUG("DSet:%s, DS:%s, DSet idx:%d, DS idx:%d",
- dset_name,ds_name,dset_idx,ds_idx);
- uv = &(vtmp->vh[dset_idx].values[ds_idx]);
-
- /** Special case for filestore:JournalWrBytes, we don't want to
- use what the Ceph schema gives us */
- if((strcmp(dset_name,"filestore") == 0) &&
- (strcmp(ds_name,"JournalWrBytes") == 0))
- {
- json_object *sum;
- sum = json_object_object_get(jo, "sum");
- if(!sum)
- return -EINVAL;
- uv->derive = (uint64_t) json_object_get_double(sum);
- DEBUG("uv derive = %" PRIu64 "",(uint64_t) uv->derive);
- }
- else if (vtmp->d->pc_types[dset_idx][ds_idx] & PERFCOUNTER_LATENCY)
- {
- json_object *avgcount, *sum;
- uint64_t avgcounti;
- double sumd;
- if (json_object_get_type(jo) != json_type_object)
- return -EINVAL;
- avgcount = json_object_object_get(jo, "avgcount");
- sum = json_object_object_get(jo, "sum");
- if ((!avgcount) || (!sum))
- return -EINVAL;
- avgcounti = json_object_get_int(avgcount);
- DEBUG("avgcounti:%ld",avgcounti);
- if (avgcounti == 0)
- avgcounti = 1;
- sumd = json_object_get_double(sum);
- DEBUG("sumd:%lf",sumd);
- double last_avg = get_last_avg(dset_name, ds_name, sumd, avgcounti);
- uv->gauge = last_avg;
- DEBUG("uv->gauge = (sumd_now - sumd_last) / (avgcounti_now - avgcounti_last) = :%lf",uv->gauge);
- }
- else if (vtmp->d->pc_types[dset_idx][ds_idx] & PERFCOUNTER_DERIVE)
- {
- /* We use json_object_get_double here because anything > 32
- * bits may get truncated by json_object_get_int */
- uv->derive = (uint64_t) json_object_get_double(jo);
- DEBUG("uv->derive %" PRIu64 "",(uint64_t)uv->derive);
- }
- else
- {
- uv->gauge = json_object_get_double(jo);
- DEBUG("uv->gauge %lf",uv->gauge);
- }
- return 0;
+static int cc_add_daemon_config(oconfig_item_t *ci) {
+ int ret;
+ struct ceph_daemon *nd, cd = {0};
+ struct ceph_daemon **tmp;
+
+ 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 (int 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;
+ }
+
+ tmp = realloc(g_daemons, (g_num_daemons + 1) * sizeof(*g_daemons));
+ if (tmp == NULL) {
+ /* The positive return value here indicates that this is a
+ * runtime error, not a configuration error. */
+ return ENOMEM;
+ }
+ g_daemons = tmp;
+
+ nd = malloc(sizeof(*nd));
+ if (!nd) {
+ return ENOMEM;
+ }
+ memcpy(nd, &cd, sizeof(*nd));
+ g_daemons[g_num_daemons] = nd;
+ g_num_daemons++;
+ return 0;
}
-/******* network I/O *******/
-enum cstate_t
-{
- CSTATE_UNCONNECTED = 0,
- CSTATE_WRITE_REQUEST,
- CSTATE_READ_VERSION,
- CSTATE_READ_AMT,
- CSTATE_READ_JSON,
-};
+static int ceph_config(oconfig_item_t *ci) {
+ int ret;
+
+ for (int 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;
+}
-enum request_type_t
-{
- ASOK_REQ_VERSION = 0,
- ASOK_REQ_DATA = 1,
- ASOK_REQ_SCHEMA = 2,
- ASOK_REQ_NONE = 1000,
-};
+/**
+ * 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;
+ }
+}
-struct cconn
-{
- /** The Ceph daemon that we're talking to */
- struct ceph_daemon *d;
+/**
+ * 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);
+}
- /** Request type */
- uint32_t request_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(sizeof(*d->last_poll_data[d->last_idx]));
+ 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;
+}
- /** The connection state */
- enum cstate_t state;
+/**
+ * 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(sizeof(*d->last_poll_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);
+}
- /** The socket we use to talk to this daemon */
- int asok;
+/**
+ * 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) {
+ for (int i = 0; i < d->last_idx; i++) {
+ if (strcmp(d->last_poll_data[i]->ds_name, ds_n) == 0) {
+ return i;
+ }
+ }
+ return -1;
+}
- /** The amount of data remaining to read / write. */
- uint32_t amt;
+/**
+ * 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;
+}
- /** Length of the JSON to read */
- uint32_t json_len;
+/**
+ * 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) {
+ for (int i = 0; i < d->ds_num; i++) {
+ if (strcmp(d->ds_names[i], ds_name) == 0) {
+ return d->ds_types[i];
+ }
+ }
+ return DSET_TYPE_UNFOUND;
+}
- /** Buffer containing JSON data */
- char *json;
-};
+/**
+ * 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];
+
+ if (parse_keys(ds_name, sizeof(ds_name), key)) {
+ 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("cconn_connect: io->state != CSTATE_UNCONNECTED");
- return -EDOM;
- }
- fd = socket(PF_UNIX, SOCK_STREAM, 0);
- if (fd < 0)
- {
- int err = -errno;
- ERROR("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("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("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 int cconn_connect(struct cconn *io) {
+ struct sockaddr_un address = {0};
+ 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) {
+ err = -errno;
+ ERROR("ceph plugin: cconn_connect: socket(PF_UNIX, SOCK_STREAM, 0) "
+ "failed: error %d",
+ err);
+ return err;
+ }
+ 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);
+ close(fd);
+ 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);
+ close(fd);
+ 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;
+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)
- {
- int ret;
- value_list_t vl = VALUE_LIST_INIT;
- struct values_tmp *vtmp = calloc(1, sizeof(struct values_tmp) +
- (sizeof(value_t) * io->d->dset.ds_num));
- if (!vtmp)
- return -ENOMEM;
- vtmp->d = io->d;
- vtmp->values_len = io->d->dset.ds_num;
- ret = traverse_json(io->json, node_handler_fetch_data, vtmp);
- if (ret)
- goto done;
- sstrncpy(vl.host, hostname_g, sizeof(vl.host));
- sstrncpy(vl.plugin, "ceph", sizeof(vl.plugin));
- sstrncpy(vl.type, io->d->dset.type, sizeof(vl.type));
- vl.values = vtmp->values;
- vl.values_len = vtmp->values_len;
- DEBUG("cconn_process_data(io=%s): vl.values_len=%d, json=\"%s\"",
- io->d->dset.type, vl.values_len, io->json);
- ret = plugin_dispatch_values(&vl);
- done:
- sfree(vtmp);
- return ret;
- }*/
-static int cconn_process_data(struct cconn *io)
-{
- int i, ret = 0;
- struct values_tmp *vtmp = calloc(1,
- sizeof(struct values_tmp)
- + (sizeof(struct values_holder)) * io->d->dset_num);
- if (!vtmp)
- return -ENOMEM;
- for (i = 0; i < io->d->dset_num; i++)
- {
- value_t *val = calloc(1, (sizeof(value_t) * io->d->dset[i].ds_num));
- vtmp->vh[i].values = val;
- vtmp->vh[i].values_len = io->d->dset[i].ds_num;
- }
- vtmp->d = io->d;
- vtmp->holder_num = io->d->dset_num;
- ret = traverse_json(io->json, node_handler_fetch_data, vtmp);
- if (ret)
- goto done;
- for (i = 0; i < vtmp->holder_num; i++)
- {
- value_list_t vl = VALUE_LIST_INIT;
- sstrncpy(vl.host, hostname_g, sizeof(vl.host));
- sstrncpy(vl.plugin, "ceph", sizeof(vl.plugin));
- strncpy(vl.plugin_instance, io->d->name, sizeof(vl.plugin_instance));
- sstrncpy(vl.type, io->d->dset[i].type, sizeof(vl.type));
- vl.values = vtmp->vh[i].values;
- vl.values_len = vtmp->vh[i].values_len;
- DEBUG("cconn_process_data(io=%s): vl.values_len=%d, json=\"%s\"",
- io->d->name, vl.values_len, io->json);
- ret = plugin_dispatch_values(&vl);
- if (ret)
- goto done;
- }
-
- done: for (i = 0; i < vtmp->holder_num; i++)
- {
- sfree(vtmp->vh[i].values);
- }
- sfree(vtmp);
- return ret;
+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.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;
}
-static int cconn_process_json(struct cconn *io)
-{
- switch (io->request_type)
- {
- case ASOK_REQ_DATA:
- return cconn_process_data(io);
- case ASOK_REQ_SCHEMA:
- return traverse_json(io->json, node_handler_define_schema, io->d);
- default:
- return -EDOM;
- }
+/**
+ * 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("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;
- return (revents & POLLIN) ? 0 : -EINVAL;
- default:
- ERROR("cconn_validate_revents(name=%s) got to illegal state on line %d",
- io->d->name, __LINE__);
- return -EDOM;
- }
+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("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,
- "\"}");*/
- char req_type_str[2];
- snprintf(req_type_str, sizeof(req_type_str), "%1.1d", io->request_type);
- json_object *cmd_object = json_object_new_object();
- json_object_object_add(cmd_object, "prefix",
- json_object_new_string(req_type_str));
- const char *cmd_json = json_object_to_json_string(cmd_object);
- /** we should send '\n' to server **/
- snprintf(cmd, sizeof(cmd), "%s\n", cmd_json);
- size_t cmd_len = strlen(cmd);
- RETRY_ON_EINTR(ret,
- write(io->asok, ((char*)&cmd) + io->amt, cmd_len - io->amt));
- DEBUG("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;
- }
- }
- json_object_put(cmd_object);
- 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("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("cconn_handle_event(name=%s) not "
- "expecting version %d!", io->d->name, io->d->version);
- return -ENOTSUP;
- }DEBUG("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("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)
- 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("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("cconn_handle_event(name=%s) got to illegal state on "
- "line %d", io->d->name, __LINE__);
- return -EDOM;
- }
+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->dset_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("cconn_prepare(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);
- if (ret > INT_MAX)
- return INT_MAX;
- else if (ret < INT_MIN)
- return INT_MIN;
- return (int) ret;
+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("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("ERROR: 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)
- {
- DEBUG("did cconn_prepare(name=%s,i=%d,st=%d)",
- io->d->name, i, io->state);
- polled_io_array[nfds++] = io_array + i;
- }
- }
- if (nfds == 0)
- {
- /* finished */
- ret = 0;
- DEBUG("cconn_main_loop: no more cconn to manage.");
- goto done;
- }
- gettimeofday(&tv, NULL);
- diff = milli_diff(&end_tv, &tv);
- if (diff <= 0)
- {
- /* Timed out */
- ret = -ETIMEDOUT;
- WARNING("ERROR: cconn_main_loop: timed out.\n");
- goto done;
- }
- RETRY_ON_EINTR(ret, poll(fds, nfds, diff));
- if (ret < 0)
- {
- ERROR("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("ERROR: 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("ERROR: 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("cconn_main_loop: some Ceph daemons were unreachable.");
- }
- else
- {
- DEBUG("cconn_main_loop: reached all Ceph daemons :)");
- }
- return ret;
+static int cconn_main_loop(uint32_t request_type) {
+ int ret, some_unreachable = 0;
+ struct timeval end_tv;
+ struct cconn io_array[g_num_daemons];
+
+ DEBUG("ceph plugin: entering cconn_main_loop(request_type = %" PRIu32 ")",
+ request_type);
+
+ if (g_num_daemons < 1) {
+ ERROR("ceph plugin: No daemons configured. See the \"Daemon\" config "
+ "option.");
+ return ENOENT;
+ }
+
+ /* create cconn array */
+ for (size_t i = 0; i < g_num_daemons; i++) {
+ io_array[i] = (struct cconn){
+ .d = g_daemons[i],
+ .request_type = request_type,
+ .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 (size_t 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=%zu,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 (int i = 0; i < nfds; ++i) {
+ struct cconn *io = polled_io_array[i];
+ int revents = fds[i].revents;
+ if (revents == 0) {
+ /* do nothing */
+ continue;
+ } 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 {
+ 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 (size_t 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);
-}
+static int ceph_read(void) { return cconn_main_loop(ASOK_REQ_DATA); }
/******* lifecycle *******/
-static int ceph_init(void)
-{
- int i, ret, j;
- DEBUG("ceph_init");
- ceph_daemons_print();
-
- ret = cconn_main_loop(ASOK_REQ_VERSION);
- if (ret)
- return ret;
- for (i = 0; i < g_num_daemons; ++i)
- {
- struct ceph_daemon *d = g_daemons[i];
- for (j = 0; j < d->dset_num; j++)
- {
- ret = plugin_register_data_set(d->dset + j);
- if (ret)
- {
- ERROR("plugin_register_data_set(%s) failed!", d->name);
- }
- else
- {
- DEBUG("plugin_register_data_set(%s): "
- "(d->dset)[%d]->ds_num=%d",
- d->name, j, d->dset[j].ds_num);
- }
- }
- }
- return 0;
+static int ceph_init(void) {
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_DAC_OVERRIDE)
+ if (check_capability(CAP_DAC_OVERRIDE) != 0) {
+ if (getuid() == 0)
+ WARNING("ceph plugin: Running collectd as root, but the "
+ "CAP_DAC_OVERRIDE capability is missing. The plugin's read "
+ "function will probably fail. Is your init system dropping "
+ "capabilities?");
+ else
+ WARNING(
+ "ceph plugin: collectd doesn't have the CAP_DAC_OVERRIDE "
+ "capability. If you don't want to run collectd as root, try running "
+ "\"setcap cap_dac_override=ep\" on the collectd binary.");
+ }
+#endif
+
+ ceph_daemons_print();
+
+ if (g_num_daemons < 1) {
+ ERROR("ceph plugin: No daemons configured. See the \"Daemon\" config "
+ "option.");
+ return ENOENT;
+ }
+
+ return cconn_main_loop(ASOK_REQ_VERSION);
}
-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;
- for(i = 0; i < last_idx; i++)
- {
- sfree(last_poll_data[i]);
- }
- sfree(last_poll_data);
- last_poll_data = NULL;
- last_idx = 0;
- DEBUG("finished ceph_shutdown");
- return 0;
+static int ceph_shutdown(void) {
+ for (size_t 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);
+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);
}
+/* vim: set sw=4 sts=4 et : */
projects / collectd.git / blobdiff