--- /dev/null
+/**
+ * collectd - src/pinba.c
+ * Copyright (C) 2010 Phoenix Kayo
+ *
+ * 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:
+ * Phoenix Kayo <kayo.k11.4 at gmail.com>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+
+/*
+ * Service declaration section
+ */
+
+#ifndef PINBA_UDP_BUFFER_SIZE
+#define PINBA_UDP_BUFFER_SIZE 65536
+#endif
+
+typedef struct _pinba_statres_ pinba_statres;
+struct _pinba_statres_ {
+ const char *name;
+ float req_per_sec;
+ float req_time;
+ float ru_utime;
+ float ru_stime;
+ float doc_size;
+ float mem_peak;
+};
+
+/*
+ * Fetch collection datas
+ *
+ * Return value: id of next data, zero if no data.
+ */
+static unsigned int
+service_statnode_collect(pinba_statres *res,
+ unsigned int id);
+static void
+service_statnode_begin();
+static void
+service_statnode_end();
+static void
+service_statnode_free();
+static void
+service_statnode_init();
+static void
+service_statnode_add(const char *name,
+ const char *host,
+ const char *server,
+ const char *script);
+
+static void
+service_config(const char* address,
+ unsigned int port);
+static int
+service_start();
+static int
+service_stop();
+
+/*
+ * Service implementation section
+ */
+
+#include"pinba.pb-c.h"
+
+#include<stdarg.h>
+#include<stdlib.h>
+#include<stdio.h>
+#include<string.h>
+#include<unistd.h>
+#include<errno.h>
+#include<fcntl.h>
+
+#include<sys/types.h>
+#include<math.h>
+#include<pthread.h>
+
+#include<sys/time.h>
+#include<event.h>
+
+#include<netinet/in.h>
+#include<arpa/inet.h>
+#include<sys/socket.h>
+
+typedef struct _pinba_socket_ pinba_socket;
+struct _pinba_socket_ {
+ int listen_sock;
+ struct event *accept_event;
+};
+
+typedef double pinba_time;
+typedef uint32_t pinba_size;
+
+static pinba_time
+now(){
+ static struct timeval tv;
+ static struct timezone tz;
+
+ gettimeofday(&tv, &tz);
+
+ return (double)tv.tv_sec+((double)tv.tv_usec/(double)1000000);
+}
+
+static pthread_rwlock_t
+temp_lock;
+
+static struct event_base *
+temp_base=NULL;
+
+static pinba_socket *
+temp_sock=NULL;
+
+static pthread_t
+temp_thrd;
+
+typedef struct _pinba_statnode_ pinba_statnode;
+struct _pinba_statnode_{
+ /* collector name */
+ char* name;
+ /* query data */
+ char *host;
+ char *server;
+ char *script;
+ /* collected data */
+ pinba_time last_coll;
+ pinba_size req_count;
+ pinba_time req_time;
+ pinba_time ru_utime;
+ pinba_time ru_stime;
+ pinba_size doc_size;
+ pinba_size mem_peak;
+};
+
+static unsigned int
+stat_nodes_count=0;
+
+static pinba_statnode *
+stat_nodes=NULL;
+
+static void
+service_statnode_reset(pinba_statnode *node){
+ node->last_coll=now();
+ node->req_count=0;
+ node->req_time=0.0;
+ node->ru_utime=0.0;
+ node->ru_stime=0.0;
+ node->doc_size=0;
+ node->mem_peak=0;
+}
+
+static inline void
+strdel(char **str){
+ if(*str)free(*str);
+ *str=NULL;
+}
+
+static inline void
+strset(char **str, const char *new){
+ strdel(str);
+ new && (*str=strdup(new));
+}
+
+static void
+service_statnode_add(const char *name,
+ const char *host,
+ const char *server,
+ const char *script){
+ pinba_statnode *node;
+ DEBUG("adding node `%s' to collector { %s, %s, %s }", name, host?host:"", server?server:"", script?script:"");
+
+ stat_nodes=realloc(stat_nodes, sizeof(pinba_statnode)*(stat_nodes_count+1));
+ if(!stat_nodes){
+ ERROR("Realloc failed!");
+ exit(-1);
+ }
+
+ node=&stat_nodes[stat_nodes_count];
+
+ /* reset stat data */
+ service_statnode_reset(node);
+
+ /* reset strings */
+ node->name=NULL;
+ node->host=NULL;
+ node->server=NULL;
+ node->script=NULL;
+
+ /* fill query data */
+ strset(&node->name, name);
+ strset(&node->host, host);
+ strset(&node->server, server);
+ strset(&node->script, script);
+
+ /* increment counter */
+ stat_nodes_count++;
+}
+
+static void
+service_statnode_free(){
+ if(stat_nodes_count){
+ DEBUG("shutdowning collector..");
+ unsigned int i;
+
+ for(i=0;i<stat_nodes_count;i++){
+ /* free strings */
+ strdel(&stat_nodes[i].name);
+ strdel(&stat_nodes[i].host);
+ strdel(&stat_nodes[i].server);
+ strdel(&stat_nodes[i].script);
+ }
+
+ free(stat_nodes);
+ stat_nodes_count=0;
+
+ pthread_rwlock_destroy(&temp_lock);
+ }
+}
+
+static void
+service_statnode_init(){
+ /* only total info collect by default */
+ service_statnode_free();
+
+ DEBUG("initializing collector..");
+ pthread_rwlock_init(&temp_lock, 0);
+}
+
+static void
+service_statnode_begin(){
+ service_statnode_init();
+ pthread_rwlock_wrlock(&temp_lock);
+
+ service_statnode_add("total", NULL, NULL, NULL);
+}
+
+static void
+service_statnode_end(){
+ pthread_rwlock_unlock(&temp_lock);
+}
+
+static unsigned int
+service_statnode_collect(pinba_statres *res, unsigned int i){
+ pinba_statnode* node;
+
+ if(stat_nodes_count==0) return 0;
+
+ /* begin collecting */
+ if(i==0){
+ pthread_rwlock_wrlock(&temp_lock);
+ }
+
+ /* find non-empty node */
+ //for(node=stat_nodes+i; node->req_count==0 && ++i<stat_nodes_count; node=stat_nodes+i);
+
+ /* end collecting */
+ if(i>=stat_nodes_count){
+ pthread_rwlock_unlock(&temp_lock);
+ return 0;
+ }
+
+ node=stat_nodes+i;
+
+ pinba_time delta=now()-node->last_coll;
+
+ res->name=node->name;
+
+ res->req_per_sec=node->req_count/delta;
+
+ if(node->req_count==0)node->req_count=1;
+ res->req_time=node->req_time/node->req_count;
+ res->ru_utime=node->ru_utime/node->req_count;
+ res->ru_stime=node->ru_stime/node->req_count;
+ res->ru_stime=node->ru_stime/node->req_count;
+ res->doc_size=node->doc_size/node->req_count;
+ res->mem_peak=node->mem_peak/node->req_count;
+
+ service_statnode_reset(node);
+ return ++i;
+}
+
+static void
+service_statnode_process(pinba_statnode *node,
+ Pinba__Request* request){
+ node->req_count++;
+ node->req_time+=request->request_time;
+ node->ru_utime+=request->ru_utime;
+ node->ru_stime+=request->ru_stime;
+ node->doc_size+=request->document_size;
+ node->mem_peak+=request->memory_peak;
+}
+
+static void
+service_process_request(Pinba__Request* request){
+ unsigned int i;
+ pthread_rwlock_wrlock(&temp_lock);
+
+ DEBUG("Process request..");
+ for(i=0;i<stat_nodes_count;i++){
+ if(stat_nodes[i].host && strcmp(request->hostname, stat_nodes[i].host))continue;
+ if(stat_nodes[i].server && strcmp(request->server_name, stat_nodes[i].server))continue;
+ if(stat_nodes[i].script && strcmp(request->script_name, stat_nodes[i].script))continue;
+ service_statnode_process(&stat_nodes[i], request);
+ }
+
+ pthread_rwlock_unlock(&temp_lock);
+}
+
+char
+service_status=0;
+
+char *
+service_address=PINBA_DEFAULT_ADDRESS;
+
+unsigned int
+service_port=PINBA_DEFAULT_PORT;
+
+static void
+service_config(const char* address,
+ unsigned int port){
+ char need_restart=0;
+
+ if(address && (service_address && strcmp(service_address, address))){
+ strset(&service_address, address);
+ need_restart++;
+ }
+
+ if(port>0 && port<65536 && service_port!=port){
+ service_port=port;
+ need_restart++;
+ }
+
+ if(service_status && need_restart){
+ service_stop();
+ service_start();
+ }
+}
+
+static void
+pinba_socket_free (pinba_socket *socket);
+
+static pinba_socket *
+pinba_socket_open (const char *ip,
+ int listen_port);
+
+static void *
+pinba_main(void *arg){
+ DEBUG("entering listen-loop..");
+
+ service_status=1;
+ event_base_dispatch(temp_base);
+
+ /* unreachable */
+ return NULL;
+}
+
+static int
+service_cleanup(){
+ DEBUG("closing socket..");
+ if(temp_sock){
+ pthread_rwlock_wrlock(&temp_lock);
+ pinba_socket_free(temp_sock);
+ pthread_rwlock_unlock(&temp_lock);
+ }
+
+ DEBUG("shutdowning event..");
+ event_base_free(temp_base);
+
+ DEBUG("shutting down..");
+}
+
+static int
+service_start(){
+ DEBUG("starting up..");
+
+ DEBUG("initializing event..");
+ temp_base = event_base_new();
+
+ DEBUG("opening socket..");
+
+ temp_sock = pinba_socket_open(service_address, service_port);
+
+ if (!temp_sock) {
+ service_cleanup();
+ return 1;
+ }
+
+ if (pthread_create(&temp_thrd, NULL, pinba_main, NULL)) {
+ service_cleanup();
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
+service_stop(){
+ pthread_cancel(temp_thrd);
+ pthread_join(temp_thrd, NULL);
+ service_status=0;
+ DEBUG("terminating listen-loop..");
+
+ service_cleanup();
+
+ return 0;
+}
+
+static int
+pinba_process_stats_packet (const unsigned char *buf,
+ int buf_len) {
+ Pinba__Request *request;
+
+ request = pinba__request__unpack(NULL, buf_len, buf);
+
+ if (!request) {
+ return P_FAILURE;
+ } else {
+ service_process_request(request);
+
+ pinba__request__free_unpacked(request, NULL);
+
+ return P_SUCCESS;
+ }
+}
+
+static void
+pinba_udp_read_callback_fn (int sock,
+ short event,
+ void *arg) {
+ if (event & EV_READ) {
+ int ret;
+ unsigned char buf[PINBA_UDP_BUFFER_SIZE];
+ struct sockaddr_in from;
+ socklen_t fromlen = sizeof(struct sockaddr_in);
+
+ ret = recvfrom(sock, buf, PINBA_UDP_BUFFER_SIZE-1, MSG_DONTWAIT, (struct sockaddr *)&from, &fromlen);
+ if (ret > 0) {
+ if (pinba_process_stats_packet(buf, ret) != P_SUCCESS) {
+ DEBUG("failed to parse data received from %s", inet_ntoa(from.sin_addr));
+ }
+ } else if (ret < 0) {
+ if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK) {
+ return;
+ }
+ WARNING("recv() failed: %s (%d)", strerror(errno), errno);
+ } else {
+ WARNING("recv() returned 0");
+ }
+ }
+}
+
+static void
+pinba_socket_free (pinba_socket *socket) {
+ if (!socket) return;
+
+ if (socket->listen_sock >= 0) {
+ close(socket->listen_sock);
+ socket->listen_sock = -1;
+ }
+
+ if (socket->accept_event) {
+ event_del(socket->accept_event);
+ free(socket->accept_event);
+ socket->accept_event = NULL;
+ }
+
+ free(socket);
+}
+
+static pinba_socket *
+pinba_socket_open (const char *ip,
+ int listen_port) {
+ struct sockaddr_in addr;
+ pinba_socket *s;
+ int sfd, flags, yes = 1;
+
+ if ((sfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+ ERROR("socket() failed: %s (%d)", strerror(errno), errno);
+ return NULL;
+ }
+
+ if ((flags = fcntl(sfd, F_GETFL, 0)) < 0 || fcntl(sfd, F_SETFL, flags | O_NONBLOCK) < 0) {
+ close(sfd);
+ return NULL;
+ }
+
+ if(setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) {
+ close(sfd);
+ return NULL;
+ }
+
+ s = (pinba_socket *)calloc(1, sizeof(pinba_socket));
+ if (!s) {
+ return NULL;
+ }
+ s->listen_sock = sfd;
+
+ memset(&addr, 0, sizeof(addr));
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(listen_port);
+ addr.sin_addr.s_addr = htonl(INADDR_ANY);
+
+ if (ip && *ip) {
+ struct in_addr tmp;
+
+ if (inet_aton(ip, &tmp)) {
+ addr.sin_addr.s_addr = tmp.s_addr;
+ } else {
+ WARNING("inet_aton(%s) failed, listening on ANY IP-address", ip);
+ }
+ }
+
+ if (bind(s->listen_sock, (struct sockaddr *)&addr, sizeof(addr))) {
+ pinba_socket_free(s);
+ ERROR("bind() failed: %s (%d)", strerror(errno), errno);
+ return NULL;
+ }
+
+ s->accept_event = (struct event *)calloc(1, sizeof(struct event));
+ if (!s->accept_event) {
+ ERROR("calloc() failed: %s (%d)", strerror(errno), errno);
+ pinba_socket_free(s);
+ return NULL;
+ }
+
+ event_set(s->accept_event, s->listen_sock, EV_READ | EV_PERSIST, pinba_udp_read_callback_fn, s);
+ event_base_set(temp_base, s->accept_event);
+ event_add(s->accept_event, NULL);
+
+ return s;
+}
+
+/*
+ * Plugin declaration section
+ */
+
+#include<stdint.h>
+
+static int
+config_set (char **var, const char *value) {
+ /* code from nginx plugin for collectd */
+ if (*var != NULL) {
+ free (*var);
+ *var = NULL;
+ }
+
+ if ((*var = strdup (value)) == NULL) return (1);
+ else return (0);
+}
+
+static int
+plugin_config (oconfig_item_t *ci) {
+ unsigned int i, o;
+ int pinba_port = 0;
+ char *pinba_address = NULL;
+
+ INFO("Pinba Configure..");
+
+ service_statnode_begin();
+
+ /* Set default values */
+ config_set(&pinba_address, PINBA_DEFAULT_ADDRESS);
+ pinba_port = PINBA_DEFAULT_PORT;
+
+ for (i = 0; i < ci->children_num; i++) {
+ oconfig_item_t *child = ci->children + i;
+ if (strcasecmp ("Address", child->key) == 0) {
+ if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING)){
+ WARNING ("pinba plugin: `Address' needs exactly one string argument.");
+ return (-1);
+ }
+ config_set(&pinba_address, child->values[0].value.string);
+ } else if (strcasecmp ("Port", child->key) == 0) {
+ if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_NUMBER)){
+ WARNING ("pinba plugin: `Port' needs exactly one number argument.");
+ return (-1);
+ }
+ pinba_port=child->values[0].value.number;
+ } else if (strcasecmp ("View", child->key) == 0) {
+ const char *name=NULL, *host=NULL, *server=NULL, *script=NULL;
+ if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING) || strlen(child->values[0].value.string)==0){
+ WARNING ("pinba plugin: `View' needs exactly one non-empty string argument.");
+ return (-1);
+ }
+ name = child->values[0].value.string;
+ for(o=0; o<child->children_num; o++){
+ oconfig_item_t *node = child->children + o;
+ if (strcasecmp ("Host", node->key) == 0) {
+ if ((node->values_num != 1) || (node->values[0].type != OCONFIG_TYPE_STRING) || strlen(node->values[0].value.string)==0){
+ WARNING ("pinba plugin: `View->Host' needs exactly one non-empty string argument.");
+ return (-1);
+ }
+ host = node->values[0].value.string;
+ } else if (strcasecmp ("Server", node->key) == 0) {
+ if ((node->values_num != 1) || (node->values[0].type != OCONFIG_TYPE_STRING) || strlen(node->values[0].value.string)==0){
+ WARNING ("pinba plugin: `View->Server' needs exactly one non-empty string argument.");
+ return (-1);
+ }
+ server = node->values[0].value.string;
+ } else if (strcasecmp ("Script", node->key) == 0) {
+ if ((node->values_num != 1) || (node->values[0].type != OCONFIG_TYPE_STRING) || strlen(node->values[0].value.string)==0){
+ WARNING ("pinba plugin: `View->Script' needs exactly one non-empty string argument.");
+ return (-1);
+ }
+ script = node->values[0].value.string;
+ } else {
+ WARNING ("pinba plugin: In `<View>' context allowed only `Host', `Server' and `Script' options but not the `%s'.", node->key);
+ return (-1);
+ }
+ }
+ /* add new statnode */
+ service_statnode_add(name, host, server, script);
+ } else {
+ WARNING ("pinba plugin: In `<Plugin pinba>' context allowed only `Address', `Port' and `Observe' options but not the `%s'.", child->key);
+ return (-1);
+ }
+ }
+
+ service_statnode_end();
+
+ service_config(pinba_address, pinba_port);
+} /* int pinba_config */
+
+static int
+plugin_init (void) {
+ INFO("Pinba Starting..");
+ service_start();
+ return 0;
+}
+
+static int
+plugin_shutdown (void) {
+ INFO("Pinba Stopping..");
+ service_stop();
+ service_statnode_free();
+ return 0;
+}
+
+static int
+plugin_submit (const char *plugin_instance,
+ const char *type,
+ const pinba_statres *res) {
+ value_t values[6];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ values[0].gauge = res->req_per_sec;
+ values[1].gauge = res->req_time;
+ values[2].gauge = res->ru_utime;
+ values[3].gauge = res->ru_stime;
+ values[4].gauge = res->doc_size;
+ values[5].gauge = res->mem_peak;
+
+ vl.values = values;
+ vl.values_len = 6;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "pinba", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, plugin_instance,
+ sizeof(vl.plugin_instance));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ INFO("Pinba Dispatch");
+ plugin_dispatch_values (&vl);
+}
+
+static int
+plugin_read (void) {
+ DEBUG("Pinba Read..");
+ unsigned int i=0;
+ static pinba_statres res;
+
+ for(; i=service_statnode_collect(&res, i); ){
+ plugin_submit(res.name, "pinba_view", &res);
+ }
+
+ return 0;
+}
+
+void module_register (void) {
+ plugin_register_complex_config ("pinba", plugin_config);
+ plugin_register_init ("pinba", plugin_init);
+ plugin_register_read ("pinba", plugin_read);
+ plugin_register_shutdown ("pinba", plugin_shutdown);
+} /* void module_register */
+
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