refine the pithy print of ingesters.

@@ -39,11 +39,9 @@ using namespace std;
 // ingest never sleep a long time, for we must start the stream ASAP.
 #define SRS_AUTO_INGESTER_SLEEP_US (int64_t)(3*1000*1000LL)
 
-SrsIngesterFFMPEG::SrsIngesterFFMPEG(SrsFFMPEG* _ffmpeg, string _vhost, string _id)
+SrsIngesterFFMPEG::SrsIngesterFFMPEG()
 {
-    ffmpeg = _ffmpeg;
-    vhost = _vhost;
-    id = _id;
+    ffmpeg = NULL;
 }
 
 SrsIngesterFFMPEG::~SrsIngesterFFMPEG()
@@ -51,6 +49,53 @@ SrsIngesterFFMPEG::~SrsIngesterFFMPEG()
     srs_freep(ffmpeg);
 }
 
+int SrsIngesterFFMPEG::initialize(SrsFFMPEG* ff, string v, string i)
+{
+    int ret = ERROR_SUCCESS;
+    
+    ffmpeg = ff;
+    vhost = v;
+    id = i;
+    starttime = srs_get_system_time_ms();
+    
+    return ret;
+}
+
+string SrsIngesterFFMPEG::uri()
+{
+    return vhost + "/" + id;
+}
+
+int SrsIngesterFFMPEG::alive()
+{
+    return (int)(srs_get_system_time_ms() - starttime);
+}
+
+bool SrsIngesterFFMPEG::equals(string v)
+{
+    return vhost == v;
+}
+
+bool SrsIngesterFFMPEG::equals(string v, string i)
+{
+    return vhost == v && id == i;
+}
+
+int SrsIngesterFFMPEG::start()
+{
+    return ffmpeg->start();
+}
+
+void SrsIngesterFFMPEG::stop()
+{
+    ffmpeg->stop();
+}
+
+int SrsIngesterFFMPEG::cycle()
+{
+    return ffmpeg->cycle();
+}
+
 void SrsIngesterFFMPEG::fast_stop()
 {
     ffmpeg->fast_stop();
@@ -129,6 +174,8 @@ int SrsIngester::parse_engines(SrsConfDirective* vhost, SrsConfDirective* ingest
     
     // get all engines.
     std::vector<SrsConfDirective*> engines = _srs_config->get_transcode_engines(ingest);
+    
+    // create ingesters without engines.
     if (engines.empty()) {
         SrsFFMPEG* ffmpeg = new SrsFFMPEG(ffmpeg_bin);
         if ((ret = initialize_ffmpeg(ffmpeg, vhost, ingest, NULL)) != ERROR_SUCCESS) {
@@ -139,12 +186,17 @@ int SrsIngester::parse_engines(SrsConfDirective* vhost, SrsConfDirective* ingest
             return ret;
         }
 
-        SrsIngesterFFMPEG* ingester = new SrsIngesterFFMPEG(ffmpeg, vhost->arg0(), ingest->arg0());
+        SrsIngesterFFMPEG* ingester = new SrsIngesterFFMPEG();
+        if ((ret = ingester->initialize(ffmpeg, vhost->arg0(), ingest->arg0())) != ERROR_SUCCESS) {
+            srs_freep(ingester);
+            return ret;
+        }
+        
         ingesters.push_back(ingester);
         return ret;
     }
 
-    // create engine
+    // create ingesters with engine
     for (int i = 0; i < (int)engines.size(); i++) {
         SrsConfDirective* engine = engines[i];
         SrsFFMPEG* ffmpeg = new SrsFFMPEG(ffmpeg_bin);
@@ -156,8 +208,13 @@ int SrsIngester::parse_engines(SrsConfDirective* vhost, SrsConfDirective* ingest
             }
             return ret;
         }
+        
+        SrsIngesterFFMPEG* ingester = new SrsIngesterFFMPEG();
+        if ((ret = ingester->initialize(ffmpeg, vhost->arg0(), ingest->arg0())) != ERROR_SUCCESS) {
+            srs_freep(ingester);
+            return ret;
+        }
 
-        SrsIngesterFFMPEG* ingester = new SrsIngesterFFMPEG(ffmpeg, vhost->arg0(), ingest->arg0());
         ingesters.push_back(ingester);
     }
     
@@ -196,13 +253,13 @@ int SrsIngester::cycle()
         SrsIngesterFFMPEG* ingester = *it;
         
         // start all ffmpegs.
-        if ((ret = ingester->ffmpeg->start()) != ERROR_SUCCESS) {
+        if ((ret = ingester->start()) != ERROR_SUCCESS) {
             srs_error("ingest ffmpeg start failed. ret=%d", ret);
             return ret;
         }
 
         // check ffmpeg status.
-        if ((ret = ingester->ffmpeg->cycle()) != ERROR_SUCCESS) {
+        if ((ret = ingester->cycle()) != ERROR_SUCCESS) {
             srs_error("ingest ffmpeg cycle failed. ret=%d", ret);
             return ret;
         }
@@ -376,11 +433,14 @@ void SrsIngester::show_ingest_log_message()
         return;
     }
     
+    // random choose one ingester to report.
+    int index = rand() % (int)ingesters.size();
+    SrsIngesterFFMPEG* ingester = ingesters.at(index);
+    
     // reportable
     if (pprint->can_print()) {
-        // TODO: FIXME: show more info.
-        srs_trace("-> "SRS_CONSTS_LOG_INGESTER
-            " time=%"PRId64", ingesters=%d", pprint->age(), (int)ingesters.size());
+        srs_trace("-> "SRS_CONSTS_LOG_INGESTER" time=%"PRId64", ingesters=%d, #%d(alive=%ds, %s)",
+            pprint->age(), (int)ingesters.size(), index, ingester->alive() / 1000, ingester->uri().c_str());
     }
 }
 
@@ -407,16 +467,15 @@ int SrsIngester::on_reload_vhost_removed(string vhost)
     for (it = ingesters.begin(); it != ingesters.end();) {
         SrsIngesterFFMPEG* ingester = *it;
         
-        if (ingester->vhost != vhost) {
+        if (!ingester->equals(vhost)) {
             ++it;
             continue;
         }
         
         // stop the ffmpeg and free it.
-        ingester->ffmpeg->stop();
+        ingester->stop();
         
-        srs_trace("reload stop ingester, "
-            "vhost=%s, id=%s", vhost.c_str(), ingester->id.c_str());
+        srs_trace("reload stop ingester, vhost=%s, id=%s", vhost.c_str(), ingester->uri().c_str());
             
         srs_freep(ingester);
         
@@ -436,16 +495,15 @@ int SrsIngester::on_reload_ingest_removed(string vhost, string ingest_id)
     for (it = ingesters.begin(); it != ingesters.end();) {
         SrsIngesterFFMPEG* ingester = *it;
         
-        if (ingester->vhost != vhost || ingester->id != ingest_id) {
+        if (!ingester->equals(vhost, ingest_id)) {
             ++it;
             continue;
         }
         
         // stop the ffmpeg and free it.
-        ingester->ffmpeg->stop();
+        ingester->stop();
         
-        srs_trace("reload stop ingester, "
-            "vhost=%s, id=%s", vhost.c_str(), ingester->id.c_str());
+        srs_trace("reload stop ingester, vhost=%s, id=%s", vhost.c_str(), ingester->uri().c_str());
             
         srs_freep(ingester);
         

@@ -45,14 +45,26 @@ class SrsPithyPrint;
 */
 class SrsIngesterFFMPEG
 {
-public:
+private:
     std::string vhost;
     std::string id;
     SrsFFMPEG* ffmpeg;
-    
-    SrsIngesterFFMPEG(SrsFFMPEG* _ffmpeg, std::string _vhost, std::string _id);
+    int64_t starttime;
+public:
+    SrsIngesterFFMPEG();
     virtual ~SrsIngesterFFMPEG();
-    
+public:
+    virtual int initialize(SrsFFMPEG* ff, std::string v, std::string i);
+    // the ingest uri, [vhost]/[ingest id]
+    virtual std::string uri();
+    // the alive in ms.
+    virtual int alive();
+    virtual bool equals(std::string v, std::string i);
+    virtual bool equals(std::string v);
+public:
+    virtual int start();
+    virtual void stop();
+    virtual int cycle();
     // @see SrsFFMPEG.fast_stop().
     virtual void fast_stop();
 };