Ignore error teardown (#142)

Author: demonolock

Diff for: testgres/node.py

@@ -359,8 +359,8 @@ def _try_shutdown(self, max_attempts, with_force=False):
                     # The node has already stopped
                     pass
 
-            # Check that node stopped
-            p_status_output = self.os_ops.exec_command(f'ps -p {node_pid}', shell=True, expect_error=True).decode('utf-8')
+            # Check that node stopped - print only column pid without headers
+            p_status_output = self.os_ops.exec_command(f'ps -o pid= -p {node_pid}', shell=True, ignore_errors=True).decode('utf-8')
             if p_status_output and str(node_pid) in p_status_output:
                 eprint(f'Failed to stop node {self.name}.')
             else:

Diff for: testgres/operations/local_ops.py

@@ -107,14 +107,15 @@ def _run_command(self, cmd, shell, input, stdin, stdout, stderr, get_process, ti
                 raise ExecUtilException("Command timed out after {} seconds.".format(timeout))
 
     def exec_command(self, cmd, wait_exit=False, verbose=False, expect_error=False, encoding=None, shell=False,
-                     text=False, input=None, stdin=None, stdout=None, stderr=None, get_process=False, timeout=None):
+                     text=False, input=None, stdin=None, stdout=None, stderr=None, get_process=False, timeout=None,
+                     ignore_errors=False):
         """
         Execute a command in a subprocess and handle the output based on the provided parameters.
         """
         process, output, error = self._run_command(cmd, shell, input, stdin, stdout, stderr, get_process, timeout, encoding)
         if get_process:
             return process
-        if (process.returncode != 0 or has_errors(output=output, error=error)) and not expect_error:
+        if not ignore_errors and ((process.returncode != 0 or has_errors(output=output, error=error)) and not expect_error):
             self._raise_exec_exception('Utility exited with non-zero code. Error `{}`', cmd, process.returncode, error or output)
 
         if verbose:

Diff for: testgres/operations/remote_ops.py

@@ -60,7 +60,7 @@ def __enter__(self):
 
     def exec_command(self, cmd, wait_exit=False, verbose=False, expect_error=False,
                      encoding=None, shell=True, text=False, input=None, stdin=None, stdout=None,
-                     stderr=None, get_process=None, timeout=None):
+                     stderr=None, get_process=None, timeout=None, ignore_errors=False):
         """
         Execute a command in the SSH session.
         Args:
@@ -98,7 +98,7 @@ def exec_command(self, cmd, wait_exit=False, verbose=False, expect_error=False,
                 marker in error for marker in ['error', 'Permission denied', 'fatal', 'No such file or directory']
             )
 
-        if error_found:
+        if not ignore_errors and error_found:
             if isinstance(error, bytes):
                 message = b"Utility exited with non-zero code. Error: " + error
             else: