diff options
Diffstat (limited to 'benchmarks/harness')
| -rw-r--r-- | benchmarks/harness/BUILD | 5 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/BUILD | 40 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/gcloud_producer.py | 250 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/gcloud_producer_test.py | 48 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/mock_producer.py | 23 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/testdata/get_five.json | 211 | ||||
| -rw-r--r-- | benchmarks/harness/machine_producers/testdata/get_one.json | 145 |
7 files changed, 720 insertions, 2 deletions
diff --git a/benchmarks/harness/BUILD b/benchmarks/harness/BUILD index 9546220c4..081a74243 100644 --- a/benchmarks/harness/BUILD +++ b/benchmarks/harness/BUILD @@ -24,6 +24,7 @@ py_library( name = "container", srcs = ["container.py"], deps = [ + "//benchmarks/workloads", requirement("asn1crypto", False), requirement("chardet", False), requirement("certifi", False), @@ -45,6 +46,7 @@ py_library( "//benchmarks/harness:container", "//benchmarks/harness:ssh_connection", "//benchmarks/harness:tunnel_dispatcher", + "//benchmarks/harness/machine_mocks", requirement("asn1crypto", False), requirement("chardet", False), requirement("certifi", False), @@ -53,6 +55,7 @@ py_library( requirement("idna", False), requirement("ptyprocess", False), requirement("requests", False), + requirement("six", False), requirement("urllib3", False), requirement("websocket-client", False), ], @@ -64,7 +67,7 @@ py_library( deps = [ "//benchmarks/harness", requirement("bcrypt", False), - requirement("cffi", False), + requirement("cffi", True), requirement("paramiko", True), requirement("cryptography", False), ], diff --git a/benchmarks/harness/machine_producers/BUILD b/benchmarks/harness/machine_producers/BUILD index a48da02a1..c4e943882 100644 --- a/benchmarks/harness/machine_producers/BUILD +++ b/benchmarks/harness/machine_producers/BUILD @@ -20,6 +20,7 @@ py_library( srcs = ["mock_producer.py"], deps = [ "//benchmarks/harness:machine", + "//benchmarks/harness/machine_producers:gcloud_producer", "//benchmarks/harness/machine_producers:machine_producer", ], ) @@ -38,3 +39,42 @@ py_library( name = "gcloud_mock_recorder", srcs = ["gcloud_mock_recorder.py"], ) + +py_library( + name = "gcloud_producer", + srcs = ["gcloud_producer.py"], + deps = [ + "//benchmarks/harness:machine", + "//benchmarks/harness/machine_producers:gcloud_mock_recorder", + "//benchmarks/harness/machine_producers:machine_producer", + ], +) + +filegroup( + name = "test_data", + srcs = [ + "testdata/get_five.json", + "testdata/get_one.json", + ], +) + +py_library( + name = "gcloud_producer_test_lib", + srcs = ["gcloud_producer_test.py"], + deps = [ + "//benchmarks/harness/machine_producers:machine_producer", + "//benchmarks/harness/machine_producers:mock_producer", + ], +) + +py_test( + name = "gcloud_producer_test", + srcs = [":gcloud_producer_test_lib"], + data = [ + ":test_data", + ], + python_version = "PY3", + tags = [ + "local", + ], +) diff --git a/benchmarks/harness/machine_producers/gcloud_producer.py b/benchmarks/harness/machine_producers/gcloud_producer.py new file mode 100644 index 000000000..4693dd8a2 --- /dev/null +++ b/benchmarks/harness/machine_producers/gcloud_producer.py @@ -0,0 +1,250 @@ +# python3 +# Copyright 2019 Google LLC +# +# 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. +"""A machine producer which produces machine objects using `gcloud`. + +Machine producers produce valid harness.Machine objects which are backed by +real machines. This producer produces those machines on the given user's GCP +account using the `gcloud` tool. + +GCloudProducer creates instances on the given GCP account named like: +`machine-XXXXXXX-XXXX-XXXX-XXXXXXXXXXXX` in a randomized fashion such that name +collisions with user instances shouldn't happen. + + Typical usage example: + + producer = GCloudProducer(args) + machines = producer.get_machines(NUM_MACHINES) + # run stuff on machines with machines[i].run(CMD) + producer.release_machines(NUM_MACHINES) +""" +import datetime +import getpass +import json +import subprocess +import threading +from typing import List, Dict, Any +import uuid + +from benchmarks.harness import machine +from benchmarks.harness.machine_producers import gcloud_mock_recorder +from benchmarks.harness.machine_producers import machine_producer + +DEFAULT_USER = getpass.getuser() + + +class GCloudProducer(machine_producer.MachineProducer): + """Implementation of MachineProducer backed by GCP. + + Produces Machine objects backed by GCP instances. + + Attributes: + project: The GCP project name under which to create the machines. + ssh_key_path: path to a valid ssh key. See README on vaild ssh keys. + image: image name as a string. + image_project: image project as a string. + zone: string to a valid GCP zone. + ssh_user: string of user name for ssh_key + ssh_password: string of password for ssh key + mock: a mock printer which will print mock data if required. Mock data is + recorded output from subprocess calls (returncode, stdout, args). + condition: mutex for this class around machine creation and deleteion. + """ + + def __init__(self, + project: str, + ssh_key_path: str, + image: str, + image_project: str, + zone: str, + ssh_user: str, + mock: gcloud_mock_recorder.MockPrinter = None): + self.project = project + self.ssh_key_path = ssh_key_path + self.image = image + self.image_project = image_project + self.zone = zone + self.ssh_user = ssh_user if ssh_user else DEFAULT_USER + self.mock = mock + self.condition = threading.Condition() + + def get_machines(self, num_machines: int) -> List[machine.Machine]: + """Returns requested number of machines backed by GCP instances.""" + if num_machines <= 0: + raise ValueError( + "Cannot ask for {num} machines!".format(num=num_machines)) + with self.condition: + names = self._get_unique_names(num_machines) + self._build_instances(names) + instances = self._start_command(names) + self._add_ssh_key_to_instances(names) + return self._machines_from_instances(instances) + + def release_machines(self, machine_list: List[machine.Machine]): + """Releases the requested number of machines, deleting the instances.""" + if not machine_list: + return + with self.condition: + cmd = "gcloud compute instances delete --quiet".split(" ") + names = [str(m) for m in machine_list] + cmd.extend(names) + cmd.append("--zone={zone}".format(zone=self.zone)) + self._run_command(cmd) + + def _machines_from_instances( + self, instances: List[Dict[str, Any]]) -> List[machine.Machine]: + """Creates Machine Objects from json data describing created instances.""" + machines = [] + for instance in instances: + name = instance["name"] + kwargs = { + "hostname": + instance["networkInterfaces"][0]["accessConfigs"][0]["natIP"], + "key_path": + self.ssh_key_path, + "username": + self.ssh_user + } + machines.append(machine.RemoteMachine(name=name, **kwargs)) + return machines + + def _get_unique_names(self, num_names) -> List[str]: + """Returns num_names unique names based on data from the GCP project.""" + curr_machines = self._list_machines() + curr_names = set([machine["name"] for machine in curr_machines]) + ret = [] + while len(ret) < num_names: + new_name = "machine-" + str(uuid.uuid4()) + if new_name not in curr_names: + ret.append(new_name) + curr_names.update(new_name) + return ret + + def _build_instances(self, names: List[str]) -> List[Dict[str, Any]]: + """Creates instances using gcloud command. + + Runs the command `gcloud compute instances create` and returns json data + on created instances on success. Creates len(names) instances, one for each + name. + + Args: + names: list of names of instances to create. + + Returns: + List of json data describing created machines. + """ + if not names: + raise ValueError( + "_build_instances cannot create instances without names.") + cmd = "gcloud compute instances create".split(" ") + cmd.extend(names) + cmd.extend("--preemptible --image={image} --zone={zone}".format( + image=self.image, zone=self.zone).split(" ")) + if self.image_project: + cmd.append("--image-project={project}".format(project=self.image_project)) + res = self._run_command(cmd) + return json.loads(res.stdout) + + def _start_command(self, names): + """Starts instances using gcloud command. + + Runs the command `gcloud compute instances start` on list of instances by + name and returns json data on started instances on success. + + Args: + names: list of names of instances to start. + + Returns: + List of json data describing started machines. + """ + if not names: + raise ValueError("_start_command cannot start empty instance list.") + cmd = "gcloud compute instances start".split(" ") + cmd.extend(names) + cmd.append("--zone={zone}".format(zone=self.zone)) + cmd.append("--project={project}".format(project=self.project)) + res = self._run_command(cmd) + return json.loads(res.stdout) + + def _add_ssh_key_to_instances(self, names: List[str]) -> None: + """Adds ssh key to instances by calling gcloud ssh command. + + Runs the command `gcloud compute ssh instance_name` on list of images by + name. Tries to ssh into given instance + + Args: + names: list of machine names to which to add the ssh-key + self.ssh_key_path. + + Raises: + subprocess.CalledProcessError: when underlying subprocess call returns an + error other than 255 (Connection closed by remote host). + TimeoutError: when 3 unsuccessful tries to ssh into the host return 255. + """ + for name in names: + cmd = "gcloud compute ssh {name}".format(name=name).split(" ") + cmd.append("--ssh-key-file={key}".format(key=self.ssh_key_path)) + cmd.append("--zone={zone}".format(zone=self.zone)) + cmd.append("--command=uname") + timeout = datetime.timedelta(seconds=5 * 60) + start = datetime.datetime.now() + while datetime.datetime.now() <= timeout + start: + try: + self._run_command(cmd) + break + except subprocess.CalledProcessError as e: + if datetime.datetime.now() > timeout + start: + raise TimeoutError( + "Could not SSH into instance after 5 min: {name}".format( + name=name)) + # 255 is the returncode for ssh connection refused. + elif e.returncode == 255: + + continue + else: + raise e + + def _list_machines(self) -> List[Dict[str, Any]]: + """Runs `list` gcloud command and returns list of Machine data.""" + cmd = "gcloud compute instances list --project {project}".format( + project=self.project).split(" ") + res = self._run_command(cmd) + return json.loads(res.stdout) + + def _run_command(self, cmd: List[str]) -> subprocess.CompletedProcess: + """Runs command as a subprocess. + + Runs command as subprocess and returns the result. + If this has a mock recorder, use the record method to record the subprocess + call. + + Args: + cmd: command to be run as a list of strings. + + Returns: + Completed process object to be parsed by caller. + + Raises: + CalledProcessError: if subprocess.run returns an error. + """ + cmd = cmd + ["--format=json"] + res = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + if self.mock: + self.mock.record(res) + if res.returncode != 0: + raise subprocess.CalledProcessError( + cmd=res.args, + output=res.stdout, + stderr=res.stderr, + returncode=res.returncode) + return res diff --git a/benchmarks/harness/machine_producers/gcloud_producer_test.py b/benchmarks/harness/machine_producers/gcloud_producer_test.py new file mode 100644 index 000000000..c8adb2bdc --- /dev/null +++ b/benchmarks/harness/machine_producers/gcloud_producer_test.py @@ -0,0 +1,48 @@ +# python3 +# Copyright 2019 Google LLC +# +# 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. +"""Tests GCloudProducer using mock data. + +GCloudProducer produces machines using 'get_machines' and 'release_machines' +methods. The tests check recorded data (jsonified subprocess.CompletedProcess +objects) of the producer producing one and five machines. +""" +import os +import types + +from benchmarks.harness.machine_producers import machine_producer +from benchmarks.harness.machine_producers import mock_producer + +TEST_DIR = os.path.dirname(__file__) + + +def run_get_release(producer: machine_producer.MachineProducer, + num_machines: int, + validator: types.FunctionType = None): + machines = producer.get_machines(num_machines) + assert len(machines) == num_machines + if validator: + validator(machines=machines, cmd="uname -a", workload=None) + producer.release_machines(machines) + + +def test_run_one(): + mock = mock_producer.MockReader(TEST_DIR + "get_one.json") + producer = mock_producer.MockGCloudProducer(mock) + run_get_release(producer, 1) + + +def test_run_five(): + mock = mock_producer.MockReader(TEST_DIR + "get_five.json") + producer = mock_producer.MockGCloudProducer(mock) + run_get_release(producer, 5) diff --git a/benchmarks/harness/machine_producers/mock_producer.py b/benchmarks/harness/machine_producers/mock_producer.py index 4f29ad53f..37e9cb4b7 100644 --- a/benchmarks/harness/machine_producers/mock_producer.py +++ b/benchmarks/harness/machine_producers/mock_producer.py @@ -13,9 +13,11 @@ # limitations under the License. """Producers of mocks.""" -from typing import List +from typing import List, Any from benchmarks.harness import machine +from benchmarks.harness.machine_producers import gcloud_mock_recorder +from benchmarks.harness.machine_producers import gcloud_producer from benchmarks.harness.machine_producers import machine_producer @@ -29,3 +31,22 @@ class MockMachineProducer(machine_producer.MachineProducer): def release_machines(self, machine_list: List[machine.MockMachine]): """No-op.""" return + + +class MockGCloudProducer(gcloud_producer.GCloudProducer): + """Mocks GCloudProducer for testing purposes.""" + + def __init__(self, mock: gcloud_mock_recorder.MockReader, **kwargs): + gcloud_producer.GCloudProducer.__init__( + self, project="mock", ssh_private_key_path="mock", **kwargs) + self.mock = mock + + def _validate_ssh_file(self): + pass + + def _run_command(self, cmd): + return self.mock.pop(cmd) + + def _machines_from_instances( + self, instances: List[Any]) -> List[machine.MockMachine]: + return [machine.MockMachine() for _ in instances] diff --git a/benchmarks/harness/machine_producers/testdata/get_five.json b/benchmarks/harness/machine_producers/testdata/get_five.json new file mode 100644 index 000000000..32bad1b06 --- /dev/null +++ b/benchmarks/harness/machine_producers/testdata/get_five.json @@ -0,0 +1,211 @@ +[ + { + "args": [ + "gcloud", + "compute", + "instances", + "list", + "--project", + "project", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":{\"natIP\":\"0.0.0.0\"}]}]}]", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "instances", + "create", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "machine-5f28f145-cc2d-427d-9cbf-428d164cdb92", + "machine-da5859b5-bae6-435d-8005-0202d6f6e065", + "machine-880a8a2f-918c-4f9e-a43c-ed3c8e02ea05", + "machine-1149147d-71e2-43ea-8fe1-49256e5c441c", + "--preemptible", + "--image=ubuntu-1910-eoan-v20191204", + "--zone=us-west1-b", + "--image-project=ubuntu-os-cloud", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]}]", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "instances", + "start", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "machine-5f28f145-cc2d-427d-9cbf-428d164cdb92", + "machine-da5859b5-bae6-435d-8005-0202d6f6e065", + "machine-880a8a2f-918c-4f9e-a43c-ed3c8e02ea05", + "machine-1149147d-71e2-43ea-8fe1-49256e5c441c", + "--zone=us-west1-b", + "--project=project", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]},{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]}]", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "Linux\n[]\n", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-5f28f145-cc2d-427d-9cbf-428d164cdb92", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "Linux\n[]\n", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-da5859b5-bae6-435d-8005-0202d6f6e065", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "Linux\n[]\n", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-880a8a2f-918c-4f9e-a43c-ed3c8e02ea05", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "Linux\n[]\n", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-1149147d-71e2-43ea-8fe1-49256e5c441c", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "Linux\n[]\n", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "instances", + "delete", + "--quiet", + "machine-42c9bf6e-8d45-4c37-b1c0-7e4fdcf530fc", + "machine-5f28f145-cc2d-427d-9cbf-428d164cdb92", + "machine-da5859b5-bae6-435d-8005-0202d6f6e065", + "machine-880a8a2f-918c-4f9e-a43c-ed3c8e02ea05", + "machine-1149147d-71e2-43ea-8fe1-49256e5c441c", + "--zone=us-west1-b", + "--format=json" + ], + "stdout": "[]\n", + "returncode": "0" + } +] diff --git a/benchmarks/harness/machine_producers/testdata/get_one.json b/benchmarks/harness/machine_producers/testdata/get_one.json new file mode 100644 index 000000000..c359c19c8 --- /dev/null +++ b/benchmarks/harness/machine_producers/testdata/get_one.json @@ -0,0 +1,145 @@ +[ + { + "args": [ + "gcloud", + "compute", + "instances", + "list", + "--project", + "linux-testing-user", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]}]", + + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "instances", + "create", + "machine-129dfcf9-b05b-4c16-a4cd-21353b570ddc", + "--preemptible", + "--image=ubuntu-1910-eoan-v20191204", + "--zone=us-west1-b", + "--image-project=ubuntu-os-cloud", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]}]", + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "instances", + "start", + "machine-129dfcf9-b05b-4c16-a4cd-21353b570ddc", + "--zone=us-west1-b", + "--project=linux-testing-user", + "--format=json" + ], + "stdout": "[{\"name\":\"name\", \"networkInterfaces\":[{\"accessConfigs\":[{\"natIP\":\"0.0.0.0\"}]}]}]", + + "returncode": "0" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-129dfcf9-b05b-4c16-a4cd-21353b570ddc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + "args": [ + "gcloud", + "compute", + "ssh", + "machine-129dfcf9-b05b-4c16-a4cd-21353b570ddc", + "--ssh-key-file=/usr/local/google/home/user/.ssh/benchmark-tools", + "--zone=us-west1-b", + "--command=uname", + "--format=json" + ], + "stdout": "", + "returncode": "255" + }, + { + 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