refine config heartbeat, add new stats. 0.9.175

@@ -42,7 +42,10 @@ max_connections     1000;
 # @remark: donot support reload.
 # default: on
 daemon              on;
+
 # heartbeat to api server
+# @remark, the ip report to server, is retrieve from system stat,
+#       which need the config item stats.network_device_index.
 heartbeat {
     # whether heartbeat is enalbed.
     # default: off
@@ -61,10 +64,6 @@ heartbeat {
     url             http://127.0.0.1:8085/api/v1/servers;
     # the id of devide.
     device_id       "my-srs-device";
-    # the index of device ip.
-    # we may retrieve more than one network device.
-    # default: 0
-    device_index    0;
     # whether report with summaries
     # if true, put /api/v1/summaries to the request data:
     #   {
@@ -115,6 +114,19 @@ http_stream {
     dir             ./objs/nginx/html;
 }
 
+# system statistics section.
+# the main cycle will retrieve the system stat,
+# for example, the cpu/mem/network/disk-io data,
+# the http api, for instance, /api/v1/summaries will show these data.
+# @remark the heartbeat depends on the network_device_index,
+#       for example, the eth0 maybe the device which index is 0.
+stats {
+    # the index of device ip.
+    # we may retrieve more than one network device.
+    # default: 0
+    network_device_index    0;
+}
+
 #############################################################################################
 # RTMP/HTTP VHOST sections
 #############################################################################################

@@ -8,6 +8,10 @@ heartbeat {
     interval        9.3;
     url             http://127.0.0.1:8085/api/v1/servers;
     device_id       "my-srs-device";
+    summaries       on;
+}
+stats {
+    network_device_index    0;
 }
 vhost __defaultVhost__ {
 }

@@ -1202,7 +1202,7 @@ int SrsConfig::check_config()
         if (n != "listen" && n != "pid" && n != "chunk_size" && n != "ff_log_dir" 
             && n != "srs_log_tank" && n != "srs_log_level" && n != "srs_log_file"
             && n != "max_connections" && n != "daemon" && n != "heartbeat"
-            && n != "http_api" && n != "http_stream" && n != "vhost"
+            && n != "http_api" && n != "http_stream" && n != "stats" && n != "vhost"
             && n != "pithy_print") 
         {
             ret = ERROR_SYSTEM_CONFIG_INVALID;
@@ -1237,7 +1237,7 @@ int SrsConfig::check_config()
         for (int i = 0; conf && i < (int)conf->directives.size(); i++) {
             string n = conf->at(i)->name;
             if (n != "enabled" && n != "interval" && n != "url" 
-                && n != "device_id" && n != "device_index" && n != "summaries"
+                && n != "device_id" && n != "summaries"
             ) {
                 ret = ERROR_SYSTEM_CONFIG_INVALID;
                 srs_error("unsupported heartbeat directive %s, ret=%d", n.c_str(), ret);
@@ -1246,6 +1246,17 @@ int SrsConfig::check_config()
         }
     }
     if (true) {
+        SrsConfDirective* conf = get_stats();
+        for (int i = 0; conf && i < (int)conf->directives.size(); i++) {
+            string n = conf->at(i)->name;
+            if (n != "network_device_index") {
+                ret = ERROR_SYSTEM_CONFIG_INVALID;
+                srs_error("unsupported stats directive %s, ret=%d", n.c_str(), ret);
+                return ret;
+            }
+        }
+    }
+    if (true) {
         SrsConfDirective* conf = get_pithy_print();
         for (int i = 0; conf && i < (int)conf->directives.size(); i++) {
             string n = conf->at(i)->name;
@@ -1427,10 +1438,14 @@ int SrsConfig::check_config()
             get_heartbeat_interval(), ret);
         return ret;
     }
-    if (get_heartbeat_device_index() < 0) {
+    
+    ////////////////////////////////////////////////////////////////////////
+    // check stats
+    ////////////////////////////////////////////////////////////////////////
+    if (get_stats_network_device_index() < 0) {
         ret = ERROR_SYSTEM_CONFIG_INVALID;
-        srs_error("directive heartbeat device_index invalid, device_index=%d, ret=%d", 
-            get_heartbeat_device_index(), ret);
+        srs_error("directive stats network_device_index invalid, network_device_index=%d, ret=%d", 
+            get_stats_network_device_index(), ret);
         return ret;
     }
     
@@ -3142,36 +3157,41 @@ string SrsConfig::get_heartbeat_device_id()
     return conf->arg0();
 }
 
-int SrsConfig::get_heartbeat_device_index()
+bool SrsConfig::get_heartbeat_summaries()
 {
     SrsConfDirective* conf = get_heartbeart();
     
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INDEX;
+        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES;
     }
     
-    conf = conf->get("device_index");
-    if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INDEX;
+    conf = conf->get("summaries");
+    if (!conf || conf->arg0() != "on") {
+        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES;
     }
     
-    return ::atoi(conf->arg0().c_str());
+    return true;
 }
 
-bool SrsConfig::get_heartbeat_summaries()
+SrsConfDirective* SrsConfig::get_stats()
 {
-    SrsConfDirective* conf = get_heartbeart();
+    return root->get("stats");
+}
+
+int SrsConfig::get_stats_network_device_index()
+{
+    SrsConfDirective* conf = get_stats();
     
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES;
+        return SRS_CONF_DEFAULT_STATS_NETWORK_DEVICE_INDEX;
     }
     
-    conf = conf->get("summaries");
-    if (!conf || conf->arg0() != "on") {
-        return SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES;
+    conf = conf->get("network_device_index");
+    if (!conf || conf->arg0().empty()) {
+        return SRS_CONF_DEFAULT_STATS_NETWORK_DEVICE_INDEX;
     }
     
-    return true;
+    return ::atoi(conf->arg0().c_str());
 }
 
 namespace _srs_internal

@@ -74,9 +74,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_ENABLED false
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INTERVAL 9.9
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_URL "http://"SRS_CONSTS_LOCALHOST":8085/api/v1/servers"
-#define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INDEX 0
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES false
 
+#define SRS_CONF_DEFAULT_STATS_NETWORK_DEVICE_INDEX 0
+
 #define SRS_CONF_DEFAULT_STAGE_PLAY_USER_INTERVAL_MS 10000
 #define SRS_CONF_DEFAULT_STAGE_PUBLISH_USER_INTERVAL_MS 10000
 #define SRS_CONF_DEFAULT_STAGE_FORWARDER_INTERVAL_MS 10000
@@ -926,14 +927,22 @@ public:
     */
     virtual std::string         get_heartbeat_device_id();
     /**
-    * get the network device index, to report to server.
-    * for example, 0 means the eth0 maybe.
-    */
-    virtual int                 get_heartbeat_device_index();
-    /**
     * whether report with summaries of http api: /api/v1/summaries.
     */
     virtual bool                get_heartbeat_summaries();
+// stats section
+private:
+    /**
+    * get the stats directive.
+    */
+    virtual SrsConfDirective*   get_stats();
+public:
+    /**
+    * get the network device index, used to retrieve the ip of device,
+    * for heartbeat to report to server, or to get the local ip.
+    * for example, 0 means the eth0 maybe.
+    */
+    virtual int                 get_stats_network_device_index();
 };
 
 namespace _srs_internal

@@ -61,7 +61,7 @@ void SrsHttpHeartbeat::heartbeat()
     
     vector<string>& ips = srs_get_local_ipv4_ips();
     if (!ips.empty()) {
-        ip = ips[_srs_config->get_heartbeat_device_index() % (int)ips.size()];
+        ip = ips[_srs_config->get_stats_network_device_index() % (int)ips.size()];
     }
     
     std::stringstream ss;

@@ -367,7 +367,7 @@ SrsDiskStat* srs_get_disk_stat()
     return &_srs_disk_stat;
 }
 
-bool srs_get_disk_stat(SrsDiskStat& r)
+bool srs_get_disk_vmstat_stat(SrsDiskStat& r)
 {
     FILE* f = fopen("/proc/vmstat", "r");
     if (f == NULL) {
@@ -401,10 +401,15 @@ bool srs_get_disk_stat(SrsDiskStat& r)
     return true;
 }
 
+bool srs_get_disk_diskstats_stat(SrsDiskStat& r)
+{
+    return true;
+}
+
 void srs_update_disk_stat()
 {
     SrsDiskStat r;
-    if (!srs_get_disk_stat(r)) {
+    if (!srs_get_disk_vmstat_stat(r)) {
         return;
     }
     

@@ -348,6 +348,8 @@ public:
     // the out(write) page count, pgpgout*1024 is the write bytes.
     // Total number of kilobytes the system paged out to disk per second.
     unsigned long pgpgout;
+    
+    // @see: https://www.kernel.org/doc/Documentation/iostats.txt
 
 public:
     SrsDiskStat();

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "174"
+#define VERSION_REVISION "175"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"

@@ -96,10 +96,6 @@ std::string __full_conf = ""
     "    url             http://127.0.0.1:8085/api/v1/servers;                                                                              \n"
     "    # the id of devide.                                                                                                                \n"
     "    device_id       \"my-srs-device\";                                                                                                 \n"
-    "    # the index of device ip.                                                                                                          \n"
-    "    # we may retrieve more than one network device.                                                                                    \n"
-    "    # default: 0                                                                                                                       \n"
-    "    device_index    0;                                                                                                                 \n"
     "    # whether report with summaries                                                                                                    \n"
     "    # if true, put /api/v1/summaries to the request data:                                                                              \n"
     "    #   {                                                                                                                              \n"
@@ -149,6 +145,18 @@ std::string __full_conf = ""
     "    # default: ./objs/nginx/html                                                                                                       \n"
     "    dir             ./objs/nginx/html;                                                                                                 \n"
     "}                                                                                                                                      \n"
+    "# system statistics section.                                                                                                           \n"
+    "# the main cycle will retrieve the system stat,                                                                                        \n"
+    "# for example, the cpu/mem/network/disk-io data,                                                                                       \n"
+    "# the http api, for instance, /api/v1/summaries will show these data.                                                                  \n"
+    "# @remark the heartbeat depends on the network_device_index,                                                                           \n"
+    "#       for example, the eth0 maybe the device which index is 0.                                                                       \n"
+    "stats {                                                                                                                                \n"
+    "    # the index of device ip.                                                                                                          \n"
+    "    # we may retrieve more than one network device.                                                                                    \n"
+    "    # default: 0                                                                                                                       \n"
+    "    network_device_index    0;                                                                                                         \n"
+    "}                                                                                                                                      \n"
     "                                                                                                                                       \n"
     "#############################################################################################                                          \n"
     "# RTMP/HTTP VHOST sections                                                                                                             \n"
@@ -1132,10 +1140,10 @@ VOID TEST(ConfigTest, CheckMacros)
 #ifndef SRS_CONF_DEFAULT_HTTP_HEAETBEAT_URL
     EXPECT_TRUE(false);
 #endif
-#ifndef SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INDEX
+#ifndef SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES
     EXPECT_TRUE(false);
 #endif
-#ifndef SRS_CONF_DEFAULT_HTTP_HEAETBEAT_SUMMARIES
+#ifndef SRS_CONF_DEFAULT_STATS_NETWORK_DEVICE_INDEX
     EXPECT_TRUE(false);
 #endif
 #ifndef SRS_CONF_DEFAULT_STAGE_PLAY_USER_INTERVAL_MS
@@ -1831,7 +1839,7 @@ VOID TEST(ConfigMainTest, ParseFullConf)
     EXPECT_EQ(9300, conf.get_heartbeat_interval());
     EXPECT_STREQ("http://127.0.0.1:8085/api/v1/servers", conf.get_heartbeat_url().c_str());
     EXPECT_STREQ("my-srs-device", conf.get_heartbeat_device_id().c_str());
-    EXPECT_EQ(0, conf.get_heartbeat_device_index());
+    EXPECT_EQ(0, conf.get_stats_network_device_index());
     EXPECT_FALSE(conf.get_heartbeat_summaries());
     
     EXPECT_TRUE(conf.get_http_api_enabled());