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Commit8c193b2

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Add force node stopping using SIGKILL in case of unsuccessful pg_ctl stop (#139)
1 parente1ed158 commit8c193b2

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2 files changed

+23
-4
lines changed

2 files changed

+23
-4
lines changed

‎testgres/node.py

Lines changed: 21 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -330,8 +330,9 @@ def version(self):
330330
"""
331331
returnself._pg_version
332332

333-
def_try_shutdown(self,max_attempts):
333+
def_try_shutdown(self,max_attempts,with_force=False):
334334
attempts=0
335+
node_pid=self.pid
335336

336337
# try stopping server N times
337338
whileattempts<max_attempts:
@@ -341,12 +342,30 @@ def _try_shutdown(self, max_attempts):
341342
exceptExecUtilException:
342343
pass# one more time
343344
exceptException:
344-
# TODO: probably should kill stray instance
345345
eprint('cannot stop node {}'.format(self.name))
346346
break
347347

348348
attempts+=1
349349

350+
# If force stopping is enabled and PID is valid
351+
ifwith_forceandnode_pid!=0:
352+
# If we couldn't stop the node
353+
p_status_output=self.os_ops.exec_command(cmd=f'ps -p{node_pid}',shell=True).decode('utf-8')
354+
ifself.status()!=NodeStatus.Stoppedandp_status_outputandstr(node_pid)inp_status_output:
355+
try:
356+
eprint(f'Force stopping node{self.name} with PID{node_pid}')
357+
self.os_ops.kill(node_pid,signal.SIGKILL,expect_error=False)
358+
exceptException:
359+
# The node has already stopped
360+
pass
361+
362+
# Check that node stopped
363+
p_status_output=self.os_ops.exec_command(f'ps -p{node_pid}',shell=True,expect_error=True).decode('utf-8')
364+
ifp_status_outputandstr(node_pid)inp_status_output:
365+
eprint(f'Failed to stop node{self.name}.')
366+
else:
367+
eprint(f'Node{self.name} has been stopped successfully.')
368+
350369
def_assign_master(self,master):
351370
"""NOTE: this is a private method!"""
352371

‎testgres/operations/local_ops.py

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -293,10 +293,10 @@ def remove_file(self, filename):
293293
returnos.remove(filename)
294294

295295
# Processes control
296-
defkill(self,pid,signal):
296+
defkill(self,pid,signal,expect_error=False):
297297
# Kill the process
298298
cmd="kill -{} {}".format(signal,pid)
299-
returnself.exec_command(cmd)
299+
returnself.exec_command(cmd,expect_error=expect_error)
300300

301301
defget_pid(self):
302302
# Get current process id

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