pulumi/sdk/python/lib/pulumi/automation/_cmd.py

81 lines
2.6 KiB
Python

# Copyright 2016-2021, Pulumi 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.
import os
import subprocess
import tempfile
from typing import List, Mapping, Optional, Callable, Any
from .errors import create_command_error
OnOutput = Callable[[str], Any]
class CommandResult:
def __init__(self, stdout: str, stderr: str, code: int) -> None:
self.stdout = stdout
self.stderr = stderr
self.code = code
def __repr__(self):
return f"CommandResult(stdout={self.stdout!r}, stderr={self.stderr!r}, code={self.code!r})"
def __str__(self) -> str:
return f"\n code: {self.code}\n stdout: {self.stdout}\n stderr: {self.stderr}"
def _run_pulumi_cmd(
args: List[str],
cwd: str,
additional_env: Mapping[str, str],
on_output: Optional[OnOutput] = None,
) -> CommandResult:
# All commands should be run in non-interactive mode.
# This causes commands to fail rather than prompting for input (and thus hanging indefinitely).
if "--non-interactive" not in args:
args.append("--non-interactive")
env = {**os.environ, **additional_env}
cmd = ["pulumi"]
cmd.extend(args)
stdout_chunks: List[str] = []
with tempfile.TemporaryFile() as stderr_file:
with subprocess.Popen(
cmd, stdout=subprocess.PIPE, stderr=stderr_file, cwd=cwd, env=env
) as process:
assert process.stdout is not None
while True:
output = process.stdout.readline().decode(encoding="utf-8")
if output == "" and process.poll() is not None:
break
if output:
text = output.rstrip()
if on_output:
on_output(text)
stdout_chunks.append(text)
code = process.returncode
stderr_file.seek(0)
stderr_contents = stderr_file.read().decode("utf-8")
result = CommandResult(
stderr=stderr_contents, stdout="\n".join(stdout_chunks), code=code
)
if code != 0:
raise create_command_error(result)
return result