[Xorp-hackers] Re: process auto restart
Ray Qiu
Ray Qiu <ray.qiu@gmail.com>
Tue, 17 Aug 2004 05:10:42 +0000
------=_Part_104_28907956.1092719442843
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Hi,
I made a patch for process auto-restart. It kinda of works. fea
restart is not
supported. I want to post it here, so you guys can provide comments
and better ideas.
My idea is that if some critical processes can not support restart,
the whole XORP
stack should be restarted (e.g. killed and brought back by init) upon
their failures.
Thanks.
--Ray
Index: bgp/process_watch.cc
===================================================================
RCS file: /cvs/xorp/bgp/process_watch.cc,v
retrieving revision 1.13
diff -r1.13 process_watch.cc
80c80
< ::exit(-1);
---
> //::exit(-1);
83,84c83,84
< start_kill_timer();
< _shutdown->dispatch();
---
> //start_kill_timer();
> //_shutdown->dispatch();
Index: rtrmgr/Makefile.am
===================================================================
RCS file: /cvs/xorp/rtrmgr/Makefile.am,v
retrieving revision 1.28
diff -r1.28 Makefile.am
180a181
> test_templates_SOURCES += master_conf_tree.cc
254a256
> test_module_manager_SOURCES += master_conf_tree.hh
268a271
> test_module_manager_SOURCES += master_conf_tree.cc
269a273
> test_module_manager_SOURCES += master_conf_tree.cc
Index: rtrmgr/Makefile.in
===================================================================
RCS file: /cvs/xorp/rtrmgr/Makefile.in,v
retrieving revision 1.39
diff -r1.39 Makefile.in
170c170
< module_command.$(OBJEXT) module_manager.$(OBJEXT) \
---
> module_command.$(OBJEXT) module_manager.$(OBJEXT) master_conf_tree.$(OBJEXT) \
200c200
< task.$(OBJEXT) template_commands.$(OBJEXT) \
---
> task.$(OBJEXT) template_commands.$(OBJEXT) master_conf_tree.$(OBJEXT) \
Index: rtrmgr/conf_tree_node.cc
===================================================================
RCS file: /cvs/xorp/rtrmgr/conf_tree_node.cc,v
retrieving revision 1.50
diff -r1.50 conf_tree_node.cc
17d16
<
1104a1104,1117
> ConfigTreeNode::mark_subtree_as_uncommitted()
> {
> _existence_committed = false;
> _value_committed = false;
>
> list<ConfigTreeNode*>::iterator iter;
> iter = _children.begin();
> while (iter != _children.end()) {
> (*iter)->mark_subtree_as_uncommitted();
> ++iter;
> }
> }
>
> void
Index: rtrmgr/conf_tree_node.hh
===================================================================
RCS file: /cvs/xorp/rtrmgr/conf_tree_node.hh,v
retrieving revision 1.24
diff -r1.24 conf_tree_node.hh
52a53
> void mark_subtree_as_uncommitted();
Index: rtrmgr/main_rtrmgr.cc
===================================================================
RCS file: /cvs/xorp/rtrmgr/main_rtrmgr.cc,v
retrieving revision 1.50
diff -r1.50 main_rtrmgr.cc
16a17,19
> //#define DEBUG_LOGGING
> //#define DEBUG_PRINT_FUNCTION_NAME
>
263d265
<
273a276
> mmgr.set_conf_tree(_mct);
Index: rtrmgr/module_manager.cc
===================================================================
RCS file: /cvs/xorp/rtrmgr/module_manager.cc,v
retrieving revision 1.32
diff -r1.32 module_manager.cc
16a17,19
> //#define DEBUG_LOGGING
> //#define DEBUG_PRINT_FUNCTION_NAME
>
35a39,40
> #include "master_conf_tree.hh"
> #include "conf_tree_node.hh"
86,88c91,122
< }
< }
< module_pids.erase(pid_iter);
---
> // Restart the module because it exited abnormally.
> // It probably crashed.
> //
> if (module->status() == Module::MODULE_FAILED) {
> if ((!strcmp(module->name().c_str(), "fea")) || (!strcmp(module->name().c_str(), "interfaces"))) {
> XLOG_ERROR("Fatal error: fea died, exit XORP.\n");
> kill(getpid(), SIGTERM);
> return;
> }
> XLOG_INFO("Restarting module %s ...\n", module->name().c_str());
> XorpCallback1<void, bool>::RefPtr run_cb
> = callback(module, &Module::module_run_done);
> if (module->run(true, run_cb) < 0) {
> XLOG_ERROR("Failed to restart module %s.\n", module->name().c_str());
> }
> else {
> XLOG_INFO("Module %s is successfully restarted.\n",
> module->name().c_str());
> }
> MasterConfigTree* mct;
> ConfigTreeNode* ctn;
> mct = module->module_manager().get_conf_tree();
> (const ConfigTreeNode*) ctn = mct->find_config_module(module->name());
> if (ctn != NULL){
> XLOG_INFO("Configure module %s.\n", module->name().c_str());
> ctn->mark_subtree_as_uncommitted();
> mct->execute();
> }
> }
> }
> module_pids.erase(pid_iter);
> }
106a141,166
> if (module->status() == Module::MODULE_FAILED) {
> // fea restart is not supported.
> if ((!strcmp(module->name().c_str(), "fea")) || (!strcmp(module->name().c_str(), "interfaces"))) {
> XLOG_ERROR("Fatal error: fea died, exit XORP.\n");
> kill(getpid(), SIGTERM);
> return;
> }
> XLOG_INFO("Restarting module %s ...\n", module->name().c_str());
> XorpCallback1<void, bool>::RefPtr run_cb
> = callback(module, &Module::module_run_done);
> if (module->run(true, run_cb) < 0) {
> XLOG_ERROR("Failed to restart module %s.\n", module->name().c_str());
> }
> else {
> XLOG_INFO("Module %s is successfully restarted.\n", module->name().c_str());
> }
> MasterConfigTree* mct;
> ConfigTreeNode* ctn;
> mct = module->module_manager().get_conf_tree();
> (const ConfigTreeNode*) ctn = mct->find_config_module(module->name());
> if (ctn != NULL){
> XLOG_INFO("Configure module %s.\n", module->name().c_str());
> ctn->mark_subtree_as_uncommitted();
> mct->execute();
> }
> }
357c417
<
---
>
535c595,596
< _xorp_root_dir(xorp_root_dir)
---
> _xorp_root_dir(xorp_root_dir),
> _master_conf_tree(NULL)
Index: rtrmgr/module_manager.hh
===================================================================
RCS file: /cvs/xorp/rtrmgr/module_manager.hh,v
retrieving revision 1.22
diff -r1.22 module_manager.hh
27d26
<
29a29,30
> class MasterConfigTree;
>
35a37
>
77a80,81
> ModuleManager& module_manager() const { return _mmgr; }
> string const name() { return _name; }
95a100
>
138c143,145
<
---
> void set_conf_tree(MasterConfigTree* v) { _master_conf_tree = v; }
> MasterConfigTree* get_conf_tree() const { return _master_conf_tree; }
>
146a154
> MasterConfigTree* _master_conf_tree;
------=_Part_104_28907956.1092719442843
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