def _begin_start(self, name, program, args):
fn_name = SCREEN_TEMPL % (name)
tracefn = tr.touch_trace(self.trace_dir, fn_name)
runtrace = tr.Trace(tracefn)
runtrace.trace(TYPE, RUN_TYPE)
runtrace.trace(NAME, name)
runtrace.trace(ARGS, json.dumps(args))
full_cmd = [program] + list(args)
session_name = self._get_session()
inited_screen = False
if session_name is None:
inited_screen = True
self._do_screen_init()
session_name = self._get_session()
if session_name is None:
msg = "After initializing screen with session named [%s], no screen session with that name was found!" % (SESSION_NAME)
raise excp.StartException(msg)
runtrace.trace(SESSION_ID, session_name)
if inited_screen or not sh.isfile(SCREEN_RC):
rc_gen = ScreenRcGenerator(self)
rc_contents = rc_gen.create(session_name, self._get_env())
out_fn = sh.abspth(SCREEN_RC)
LOG.info("Writing your created screen rc file to [%s]" % (out_fn))
sh.write_file(out_fn, rc_contents)
self._do_start(session_name, name, full_cmd)
return tracefn
def _install_python_setups(self):
pydirs = self._get_python_directories()
if pydirs:
LOG.info("Setting up %s python directories (%s)" % (len(pydirs), pydirs))
for (name, wkdir) in pydirs.items():
working_dir = wkdir or self.appdir
self.tracewriter.make_dir(working_dir)
record_fn = tr.touch_trace(self.tracedir, self._format_trace_name(name))
#do this before write just incase it craps out half way through
self.tracewriter.file_touched(record_fn)
self.tracewriter.py_install(name, record_fn, working_dir)
#now actually do it
(stdout, stderr) = sh.execute(*PY_INSTALL, cwd=working_dir, run_as_root=True)
sh.write_file(record_fn, self._format_stderr_out(stderr, stdout))
def start(self, name, program, *args, **kargs):
tracedir = kargs.get("trace_dir")
appdir = kargs.get("app_dir")
fn_name = FORK_TEMPL % (name)
(pidfile, stderrfn, stdoutfn) = self._form_file_names(tracedir, fn_name)
tracefn = tr.touch_trace(tracedir, fn_name)
runtrace = tr.Trace(tracefn)
runtrace.trace(TYPE, RUN_TYPE)
runtrace.trace(PID_FN, pidfile)
runtrace.trace(STDERR_FN, stderrfn)
runtrace.trace(STDOUT_FN, stdoutfn)
runtrace.trace(ARGS, json.dumps(args))
LOG.info("Forking [%s] by running command [%s]" % (name, program))
self._fork_start(program, appdir, pidfile, stdoutfn, stderrfn, *args)
return tracefn
def _start(self, app_name, program, program_args):
fn_name = UPSTART_TEMPL % (app_name)
tracefn = tr.touch_trace(self.trace_dir, fn_name)
runtrace = tr.Trace(tracefn)
runtrace.trace(TYPE, RUN_TYPE)
runtrace.trace(NAME, app_name)
runtrace.trace(ARGS, json.dumps(program_args))
# Emit the start, keep track and only do one per component name
component_event = self.component_name + START_EVENT_SUFFIX
if component_event in self.events:
LOG.debug("Already emitted event: %s" % (component_event))
else:
LOG.info("About to emit event: %s" % (component_event))
cmd = EMIT_BASE_CMD + [component_event]
sh.execute(*cmd, run_as_root=True)
self.events.add(component_event)
return tracefn
def _install_python_setups(self):
#setup any python directories
pydirs = self._get_python_directories()
if pydirs:
actual_dirs = list()
for pydir_info in pydirs:
working_dir = pydir_info.get('work_dir', self.appdir)
actual_dirs.append(working_dir)
LOG.info("Setting up %s python directories (%s)" % (len(pydirs), ", ".join(actual_dirs)))
self.tracewriter.make_dir(self.tracedir)
for pydir_info in pydirs:
name = pydir_info.get("name")
if not name:
#TODO should we raise an exception here?
continue
working_dir = pydir_info.get('work_dir', self.appdir)
record_fn = tr.touch_trace(self.tracedir, self._format_trace_name(name))
self.tracewriter.file_touched(record_fn)
(stdout, stderr) = sh.execute(*PY_INSTALL, cwd=working_dir, run_as_root=True)
sh.write_file(record_fn, self._format_stderr_out(stderr, stdout))
self.tracewriter.py_install(name, record_fn, working_dir)
def _do_trace(self, fn, kvs):
tracefn = tr.touch_trace(self.trace_dir, fn)
runtrace = tr.Trace(tracefn)
for (k, v) in kvs.items():
runtrace.trace(k, v)
return tracefn
