support reload the gop_cache

@@ -198,7 +198,7 @@ usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw
 * nginx v1.5.0: 139524 lines <br/>
 
 ### History
-* v0.9, 2013-12-14, support reload the hls/forwarder/transcoder.
+* v0.9, 2013-12-15, support reload the hls/forwarder/transcoder.
 * v0.9, 2013-12-14, refine the thread model for the retry threads.
 * v0.9, 2013-12-10, auto install depends tools/libs on centos/ubuntu.
 * v0.8, 2013-12-08, v0.8 released. 19186 lines.

@@ -26,6 +26,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <arpa/inet.h>
 #include <stdlib.h>
 
+using namespace std;
+
 #include <srs_core_error.hpp>
 #include <srs_core_log.hpp>
 #include <srs_core_rtmp.hpp>
@@ -118,15 +120,20 @@ int SrsClient::do_cycle()
 	return ret;
 }
 
-int SrsClient::on_reload_vhost_removed(SrsConfDirective* vhost)
+int SrsClient::on_reload_vhost_removed(string vhost)
 {
 	int ret = ERROR_SUCCESS;
 	
-	// if the vhost connected is removed, disconnect the client.
-	if (req->vhost == vhost->arg0()) {
-		srs_close_stfd(stfd);
+	if (req->vhost != vhost) {
+		return ret;
 	}
 	
+	// if the vhost connected is removed, disconnect the client.
+	srs_trace("vhost %s removed/disabled, close client url=%s", 
+		vhost.c_str(), req->get_stream_url().c_str());
+		
+	srs_close_stfd(stfd);
+	
 	return ret;
 }
 	
@@ -174,7 +181,7 @@ int SrsClient::service_cycle()
 	srs_trace("set chunk_size=%d success", chunk_size);
 	
 	// find a source to publish.
-	SrsSource* source = SrsSource::find(req->get_stream_url());
+	SrsSource* source = SrsSource::find(req->get_stream_url(), req->vhost);
 	srs_assert(source != NULL);
 	
 	// check publish available.

@@ -65,7 +65,7 @@ protected:
 	virtual int do_cycle();
 // interface ISrsReloadHandler
 public:
-	virtual int on_reload_vhost_removed(SrsConfDirective* vhost);
+	virtual int on_reload_vhost_removed(std::string vhost);
 private:
 	// when valid and connected to vhost/app, service the client.
 	virtual int service_cycle();

@@ -500,39 +500,60 @@ int SrsConfig::reload()
 		if (old_vhost->name != "vhost") {
 			continue;
 		}
+		
+		std::string vhost = old_vhost->arg0();
 
-		SrsConfDirective* new_vhost = root->get("vhost", old_vhost->arg0());
+		SrsConfDirective* new_vhost = root->get("vhost", vhost);
 		// ignore if absolutely equal
 		if (new_vhost && srs_directive_equals(old_vhost, new_vhost)) {
+			srs_trace("vhost %s absolutely equal, ignore.", vhost.c_str());
 			continue;
 		}
 		// ignore if enable the new vhost when old vhost is disabled.
 		if (get_vhost_enabled(new_vhost) && !get_vhost_enabled(old_vhost)) {
+			srs_trace("vhost %s disabled=>enabled, ignore.", vhost.c_str());
 			continue;
 		}
 		// ignore if both old and new vhost are disabled.
 		if (!get_vhost_enabled(new_vhost) && !get_vhost_enabled(old_vhost)) {
+			srs_trace("vhost %s disabled=>disabled, ignore.", vhost.c_str());
 			continue;
 		}
 
 		// merge config: vhost removed/disabled.
 		if (!get_vhost_enabled(new_vhost) && get_vhost_enabled(old_vhost)) {
-			srs_trace("vhost %s disabled, reload it.", old_vhost->name.c_str());
+			srs_trace("vhost %s disabled, reload it.", vhost.c_str());
 			for (it = subscribes.begin(); it != subscribes.end(); ++it) {
 				ISrsReloadHandler* subscribe = *it;
-				if ((ret = subscribe->on_reload_vhost_removed(old_vhost)) != ERROR_SUCCESS) {
-					srs_error("notify subscribes pithy_print remove vhost failed. ret=%d", ret);
+				if ((ret = subscribe->on_reload_vhost_removed(vhost)) != ERROR_SUCCESS) {
+					srs_error("notify subscribes pithy_print remove "
+						"vhost %s failed. ret=%d", vhost.c_str(), ret);
 					return ret;
 				}
 			}
-			srs_trace("reload remove vhost success.");
+			srs_trace("reload remove vhost %s success.", vhost.c_str());
 		}
 		
 		// merge config: vhost modified.
+		srs_trace("vhost %s modified, reload its detail.", vhost.c_str());
+		if (get_vhost_enabled(new_vhost) && get_vhost_enabled(old_vhost)) {
+			if (!srs_directive_equals(new_vhost->get("gop_cache"), old_vhost->get("gop_cache"))) {
+				for (it = subscribes.begin(); it != subscribes.end(); ++it) {
+					ISrsReloadHandler* subscribe = *it;
+					if ((ret = subscribe->on_reload_gop_cache(vhost)) != ERROR_SUCCESS) {
+						srs_error("vhost %s notify subscribes gop_cache failed. ret=%d", vhost.c_str(), ret);
+						return ret;
+					}
+				}
+				srs_trace("vhost %s reload gop_cache success.", vhost.c_str());
+			}
+			// TODO: suppor reload hls/forward/ffmpeg/http
+			continue;
+		}
+		srs_warn("invalid reload path, enabled old: %d, new: %d", 
+			get_vhost_enabled(old_vhost), get_vhost_enabled(new_vhost));
 	}
 	
-	// TODO: suppor reload hls/forward/ffmpeg/http
-	
 	return ret;
 }
 
@@ -1440,6 +1461,11 @@ int SrsConfig::get_pithy_print_play()
 
 bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b)
 {
+	// both NULL, equal.
+	if (!a && !b) {
+		return true;
+	}
+	
 	if (!a || !b) {
 		return false;
 	}

@@ -23,6 +23,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_core_reload.hpp>
 
+using namespace std;
+
 #include <srs_core_error.hpp>
 
 ISrsReloadHandler::ISrsReloadHandler()
@@ -43,7 +45,12 @@ int ISrsReloadHandler::on_reload_pithy_print()
 	return ERROR_SUCCESS;
 }
 
-int ISrsReloadHandler::on_reload_vhost_removed(SrsConfDirective* /*vhost*/)
+int ISrsReloadHandler::on_reload_vhost_removed(string /*vhost*/)
+{
+	return ERROR_SUCCESS;
+}
+
+int ISrsReloadHandler::on_reload_gop_cache(string /*vhost*/)
 {
 	return ERROR_SUCCESS;
 }

@@ -29,7 +29,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 #include <srs_core.hpp>
 
-class SrsConfDirective;
+#include <string>
 
 /**
 * the handler for config reload.
@@ -42,7 +42,8 @@ public:
 public:
 	virtual int on_reload_listen();
 	virtual int on_reload_pithy_print();
-	virtual int on_reload_vhost_removed(SrsConfDirective* vhost);
+	virtual int on_reload_vhost_removed(std::string vhost);
+	virtual int on_reload_gop_cache(std::string vhost);
 };
 
 #endif
\ No newline at end of file

@@ -24,6 +24,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_core_source.hpp>
 
 #include <algorithm>
+using namespace std;
 
 #include <srs_core_log.hpp>
 #include <srs_core_protocol.hpp>
@@ -344,19 +345,21 @@ int SrsGopCache::dump(SrsConsumer* consumer, int tba, int tbv)
 
 std::map<std::string, SrsSource*> SrsSource::pool;
 
-SrsSource* SrsSource::find(std::string stream_url)
+SrsSource* SrsSource::find(string stream_url, string vhost)
 {
 	if (pool.find(stream_url) == pool.end()) {
-		pool[stream_url] = new SrsSource(stream_url);
-		srs_verbose("create new source for url=%s", stream_url.c_str());
+		pool[stream_url] = new SrsSource(stream_url, vhost);
+		srs_verbose("create new source for "
+			"url=%s, vhost=%s", stream_url.c_str(), vhost.c_str());
 	}
 	
 	return pool[stream_url];
 }
 
-SrsSource::SrsSource(std::string _stream_url)
+SrsSource::SrsSource(string _stream_url, string _vhost)
 {
 	stream_url = _stream_url;
+	vhost = _vhost;
 	
 #ifdef SRS_HLS
 	hls = new SrsHls();
@@ -407,6 +410,25 @@ SrsSource::~SrsSource()
 #endif
 }
 
+int SrsSource::on_reload_gop_cache(string _vhost)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if (vhost != _vhost) {
+		return ret;
+	}
+	
+	// gop cache changed.
+	bool enabled_cache = config->get_gop_cache(vhost);
+	
+	srs_trace("vhost %s gop_cache changed to %d, source url=%s", 
+		vhost.c_str(), enabled_cache, stream_url.c_str());
+	
+	set_cache(enabled_cache);
+	
+	return ret;
+}
+
 bool SrsSource::can_publish()
 {
 	return _can_publish;

@@ -34,6 +34,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <vector>
 #include <string>
 
+#include <srs_core_reload.hpp>
+
 class SrsSource;
 class SrsCommonMessage;
 class SrsOnMetaDataPacket;
@@ -158,19 +160,21 @@ public:
 /**
 * live streaming source.
 */
-class SrsSource
+class SrsSource : public ISrsReloadHandler
 {
 private:
 	static std::map<std::string, SrsSource*> pool;
 public:
 	/**
 	* find stream by vhost/app/stream.
-	* @stream_url the stream url, for example, myserver.xxx.com/app/stream
+	* @param stream_url the stream url, for example, myserver.xxx.com/app/stream
+	* @param vhost the vhost to constructor the object.
 	* @return the matched source, never be NULL.
 	* @remark stream_url should without port and schema.
 	*/
-	static SrsSource* find(std::string stream_url);
+	static SrsSource* find(std::string stream_url, std::string vhost);
 private:
+	std::string vhost;
 	std::string stream_url;
 	// to delivery stream to clients.
 	std::vector<SrsConsumer*> consumers;
@@ -206,8 +210,11 @@ private:
 	// the cached audio sequence header.
 	SrsSharedPtrMessage* cache_sh_audio;
 public:
-	SrsSource(std::string _stream_url);
+	SrsSource(std::string _stream_url, std::string _vhost);
 	virtual ~SrsSource();
+// interface ISrsReloadHandler
+public:
+	virtual int on_reload_gop_cache(std::string _vhost);
 public:
 	virtual bool can_publish();
 	virtual int on_meta_data(SrsCommonMessage* msg, SrsOnMetaDataPacket* metadata);