daemon/dtnd.cc
changeset 0 2b3e5ec03512
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/daemon/dtnd.cc	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,264 @@
+/*
+ *    Copyright 2004-2006 Intel Corporation
+ * 
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <dtn-config.h>
+#endif
+
+#include <errno.h>
+#include <string>
+#include <sys/time.h>
+
+#include <oasys/debug/Log.h>
+#include <oasys/io/NetUtils.h>
+#include <oasys/tclcmd/ConsoleCommand.h>
+#include <oasys/tclcmd/TclCommand.h>
+#include <oasys/thread/Timer.h>
+#include <oasys/util/App.h>
+#include <oasys/util/Getopt.h>
+#include <oasys/util/StringBuffer.h>
+
+#include "applib/APIServer.h"
+#include "cmd/TestCommand.h"
+#include "servlib/DTNServer.h"
+#include "storage/DTNStorageConfig.h"
+#include "bundling/BundleDaemon.h"
+
+#include "bundling/S10Logger.h"
+
+extern const char* dtn_version;
+
+/**
+ * Namespace for the dtn daemon source code.
+ */
+namespace dtn {
+
+/**
+ * Thin class that implements the daemon itself.
+ */
+class DTND : public oasys::App {
+public:
+    DTND();
+    int main(int argc, char* argv[]);
+
+protected:
+    TestCommand*          testcmd_;
+    oasys::ConsoleCommand* consolecmd_;
+    DTNStorageConfig      storage_config_;
+    
+    // virtual from oasys::App
+    void fill_options();
+    
+    void init_testcmd(int argc, char* argv[]);
+    void run_console();
+};
+
+//----------------------------------------------------------------------
+DTND::DTND()
+    : App("DTND", "dtnd", dtn_version),
+      testcmd_(NULL),
+      consolecmd_(NULL),
+      storage_config_("storage",			// command name
+                      "berkeleydb",			// storage type
+                      "DTN",				// DB name
+                      INSTALL_LOCALSTATEDIR "/dtn/db")	// DB directory
+{
+    // override default logging settings
+    loglevel_ = oasys::LOG_NOTICE;
+    debugpath_ = "~/.dtndebug";
+    
+    // override defaults from oasys storage config
+    storage_config_.db_max_tx_ = 1000;
+
+    testcmd_    = new TestCommand();
+    consolecmd_ = new oasys::ConsoleCommand("dtn% ");
+}
+
+//----------------------------------------------------------------------
+void
+DTND::fill_options()
+{
+    fill_default_options(DAEMONIZE_OPT | CONF_FILE_OPT);
+    
+    opts_.addopt(
+        new oasys::BoolOpt('t', "tidy", &storage_config_.tidy_,
+                           "clear database and initialize tables on startup"));
+
+    opts_.addopt(
+        new oasys::BoolOpt(0, "init-db", &storage_config_.init_,
+                           "initialize database on startup"));
+
+    opts_.addopt(
+        new oasys::InAddrOpt(0, "console-addr", &consolecmd_->addr_, "<addr>",
+                             "set the console listening addr (default off)"));
+    
+    opts_.addopt(
+        new oasys::UInt16Opt(0, "console-port", &consolecmd_->port_, "<port>",
+                             "set the console listening port (default off)"));
+    
+    opts_.addopt(
+        new oasys::IntOpt('i', 0, &testcmd_->id_, "<id>",
+                          "set the test id"));
+}
+
+//----------------------------------------------------------------------
+void
+DTND::init_testcmd(int argc, char* argv[])
+{
+    for (int i = 0; i < argc; ++i) {
+        testcmd_->argv_.append(argv[i]);
+        testcmd_->argv_.append(" ");
+    }
+
+    testcmd_->bind_vars();
+    oasys::TclCommandInterp::instance()->reg(testcmd_);
+}
+
+//----------------------------------------------------------------------
+void
+DTND::run_console()
+{
+    // launch the console server
+    if (consolecmd_->port_ != 0) {
+        log_info_p("/dtnd", "starting console on %s:%d",
+                   intoa(consolecmd_->addr_), consolecmd_->port_);
+        
+        oasys::TclCommandInterp::instance()->
+            command_server(consolecmd_->prompt_.c_str(),
+                           consolecmd_->addr_, consolecmd_->port_);
+    }
+    
+    if (daemonize_ || (consolecmd_->stdio_ == false)) {
+        oasys::TclCommandInterp::instance()->event_loop();
+    } else {
+        oasys::TclCommandInterp::instance()->
+            command_loop(consolecmd_->prompt_.c_str());
+    }
+}
+
+//----------------------------------------------------------------------
+int
+DTND::main(int argc, char* argv[])
+{
+    init_app(argc, argv);
+
+    log_notice_p("/dtnd", "DTN daemon starting up... (pid %d)", getpid());
+
+
+    if (oasys::TclCommandInterp::init(argv[0], "/dtn/tclcmd") != 0)
+    {
+        log_crit_p("/dtnd", "Can't init TCL");
+        notify_and_exit(1);
+    }
+
+    // stop thread creation b/c of initialization dependencies
+    oasys::Thread::activate_start_barrier();
+
+    DTNServer* dtnserver = new DTNServer("/dtnd", &storage_config_);
+    APIServer* apiserver = new APIServer();
+
+    dtnserver->init();
+
+    oasys::TclCommandInterp::instance()->reg(consolecmd_);
+    init_testcmd(argc, argv);
+
+    if (! dtnserver->parse_conf_file(conf_file_, conf_file_set_)) {
+        log_err_p("/dtnd", "error in configuration file, exiting...");
+        notify_and_exit(1);
+    }
+
+    if (storage_config_.init_)
+    {
+        log_notice_p("/dtnd", "initializing persistent data store");
+    }
+
+    if (! dtnserver->init_datastore()) {
+        log_err_p("/dtnd", "error initializing data store, exiting...");
+        notify_and_exit(1);
+    }
+    
+    // If we're running as --init-db, make an empty database and exit
+    if (storage_config_.init_ && !storage_config_.tidy_)
+    {
+        dtnserver->close_datastore();
+        log_info_p("/dtnd", "database initialization complete.");
+        notify_and_exit(0);
+    }
+    
+    if (BundleDaemon::instance()->local_eid().equals(EndpointID::NULL_EID()))
+    {
+        log_err_p("/dtnd", "no local eid specified; use the 'route local_eid' command");
+        notify_and_exit(1);
+    }
+	s10_setlocal(BundleDaemon::instance()->local_eid().c_str());
+	s10_daemon(S10_STARTING);
+
+    // if we've daemonized, now is the time to notify our parent
+    // process that we've successfully initialized
+    if (daemonize_) {
+        daemonizer_.notify_parent(0);
+    }
+    
+    dtnserver->start();
+    if (apiserver->enabled()) {
+        apiserver->bind_listen_start(apiserver->local_addr(), 
+                                     apiserver->local_port());
+    }
+    oasys::Thread::release_start_barrier(); // run blocked threads
+
+    // if the test script specified something to run for the test,
+    // then execute it now
+    if (testcmd_->initscript_.length() != 0) {
+        oasys::TclCommandInterp::instance()->
+            exec_command(testcmd_->initscript_.c_str());
+    }
+
+    // allow startup messages to be flushed to standard-out before
+    // the prompt is displayed
+    oasys::Thread::yield();
+    usleep(500000);
+    
+    run_console();
+
+    log_notice_p("/dtnd", "command loop exited... shutting down daemon");
+
+    apiserver->stop();
+    
+    oasys::TclCommandInterp::shutdown();
+    dtnserver->shutdown();
+    
+    // close out servers
+    delete dtnserver;
+    // don't delete apiserver; keep it around so slow APIClients can finish
+    
+    // give other threads (like logging) a moment to catch up before exit
+    oasys::Thread::yield();
+    sleep(1);
+    
+    // kill logging
+    oasys::Log::shutdown();
+    
+    return 0;
+}
+
+} // namespace dtn
+
+int
+main(int argc, char* argv[])
+{
+    dtn::DTND dtnd;
+    dtnd.main(argc, argv);
+}