def test_create_dockerfile_from_everything():
with tempfile.TemporaryDirectory() as tempdir_outside:
with open(os.path.join(tempdir_outside, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as tempdir:
storage = Docker(
registry_url="test1",
base_image="test3",
python_dependencies=["test"],
image_name="test4",
image_tag="test5",
env_vars={"test": "1"},
files={os.path.join(tempdir_outside, "test"): "./test2"},
base_url="test_url",
)
f = Flow("test")
g = Flow("other")
storage.add_flow(f)
storage.add_flow(g)
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
assert "FROM test3" in output
assert "COPY test ./test2" in output
assert "ENV test=1" in output
assert "COPY healthcheck.py /root/.prefect/healthcheck.py" in output
assert "COPY test.flow /root/.prefect/test.prefect" in output
assert "COPY other.flow /root/.prefect/other.prefect" in output
def test_create_dockerfile_with_flow_file(no_docker_host_var, tmpdir):
contents = """from prefect import Flow\nf=Flow('test-flow')"""
full_path = os.path.join(tmpdir, "flow.py")
with open(full_path, "w") as f:
f.write(contents)
with open(os.path.join(tmpdir, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as tempdir_inside:
storage = Docker(files={full_path: "flow.py"},
stored_as_script=True,
path="flow.py")
f = Flow("test-flow")
storage.add_flow(f)
dpath = storage.create_dockerfile_object(directory=tempdir_inside)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
assert "COPY flow.py flow.py" in output
storage = Docker(files={full_path: "flow.py"}, stored_as_script=True)
f = Flow("test-flow")
storage.add_flow(f)
with pytest.raises(ValueError):
storage.create_dockerfile_object(directory=tempdir_inside)
def test_create_dockerfile_from_prefect_version():
storage = Docker(prefect_version="master")
with tempfile.TemporaryDirectory() as tempdir:
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
assert "prefect.git@master" in output
def test_create_dockerfile_from_base_image():
storage = Docker(base_image="python:3.6")
with tempfile.TemporaryDirectory() as tempdir:
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
assert "FROM python:3.6" in output
def test_create_dockerfile_from_prefect_version(monkeypatch, prefect_version):
monkeypatch.setattr(sys, "version_info", MagicMock(major=3, minor=6))
storage = Docker(prefect_version=prefect_version[0])
with tempfile.TemporaryDirectory() as tempdir:
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
for content in prefect_version[1]:
assert content in output
def test_create_dockerfile_from_dockerfile_uses_tempdir_path():
myfile = "FROM my-own-image:latest\n\nRUN echo 'hi'"
with tempfile.TemporaryDirectory() as tempdir_outside:
with open(os.path.join(tempdir_outside, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as directory:
with open(os.path.join(directory, "myfile"), "w") as tmp:
tmp.write(myfile)
storage = Docker(
dockerfile=os.path.join(directory, "myfile"),
files={os.path.join(tempdir_outside, "test"): "./test2"},
)
storage.add_flow(Flow("foo"))
dpath = storage.create_dockerfile_object(directory=directory)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
assert ("COPY {} /root/.prefect/flows/foo.prefect".format(
os.path.join(directory, "foo.flow")) in output), output
assert ("COPY {} ./test2".format(os.path.join(directory, "test"))
in output), output
assert ("COPY {} /root/.prefect/healthcheck.py".format(
os.path.join(directory, "healthcheck.py")) in output)
assert output.startswith("\n" + myfile)
# test proper indentation
assert all(line == line.lstrip() for line in output.split("\n")
if line not in ["\n", " "])
def test_copy_files():
with tempfile.TemporaryDirectory() as sample_top_directory:
sample_sub_directory = os.path.join(sample_top_directory, "subdir")
os.mkdir(sample_sub_directory)
sample_file = os.path.join(sample_sub_directory, "test.txt")
with open(sample_file, "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as directory:
storage = Docker(files={
sample_sub_directory: "/test_dir",
sample_file: "/path/test_file.txt",
}, )
storage.add_flow(Flow("foo"))
dpath = storage.create_dockerfile_object(directory=directory)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
contents = os.listdir(directory)
assert "subdir" in contents, contents
assert "test.txt" in contents, contents
assert "COPY {} /test_dir".format(
os.path.join(directory, "subdir").replace("\\", "/") in
output), output
assert "COPY {} /path/test_file.txt".format(
os.path.join(directory, "test.txt").replace("\\", "/") in
output), output
def test_create_dockerfile_with_weird_flow_name():
with tempfile.TemporaryDirectory() as tempdir_outside:
with open(os.path.join(tempdir_outside, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as tempdir:
storage = Docker(registry_url="test1", base_image="test3")
f = Flow("WHAT IS THIS !!! ~~~~")
storage.add_flow(f)
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
assert (
"COPY what-is-this.flow /root/.prefect/what-is-this.prefect"
in output)
def test_create_dockerfile_from_everything():
with tempfile.TemporaryDirectory() as tempdir_outside:
with open(os.path.join(tempdir_outside, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as tempdir:
storage = Docker(
registry_url="test1",
base_image="test3",
python_dependencies=["test"],
image_name="test4",
image_tag="test5",
env_vars={"test": "1"},
files={os.path.join(tempdir_outside, "test"): "./test2"},
base_url="test_url",
)
f = Flow("test")
g = Flow("other")
storage.add_flow(f)
storage.add_flow(g)
storage.create_dockerfile_object(directory=tempdir)
with open(os.path.join(tempdir, "Dockerfile"), "r") as dockerfile:
output = dockerfile.read()
assert "FROM test3" in output
assert "COPY test ./test2" in output
# ensure there is a "ENV ... test=1" in the output
results = re.search(
r"ENV(\s+[a-zA-Z0-9_]*\=[^\\]*\\\s*$)*\s*(?P<result>test=1)",
output,
re.MULTILINE,
)
assert results != None
assert results.group("result") == "test=1"
assert "COPY healthcheck.py /root/.prefect/healthcheck.py" in output
assert "COPY test.flow /root/.prefect/flows/test.prefect" in output
assert "COPY other.flow /root/.prefect/flows/other.prefect" in output
def test_extra_dockerfile_commands():
with tempfile.TemporaryDirectory() as directory:
storage = Docker(extra_dockerfile_commands=[
'RUN echo "I\'m a little tea pot"',
], )
storage.add_flow(Flow("foo"))
dpath = storage.create_dockerfile_object(directory=directory)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
assert "COPY {} /path/test_file.txt".format(
'RUN echo "I\'m a little tea pot"\n' in output), output
def test_create_dockerfile_from_dockerfile():
myfile = "FROM my-own-image:latest\n\nRUN echo 'hi'"
with tempfile.TemporaryDirectory() as directory:
with open(os.path.join(directory, "myfile"), "w") as tmp:
tmp.write(myfile)
storage = Docker(dockerfile=os.path.join(directory, "myfile"))
dpath = storage.create_dockerfile_object(directory=directory)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
assert output.startswith("\n" + myfile)
# test proper indentation
assert all(line == line.lstrip() for line in output.split("\n")
if line not in ["\n", " "])
def test_run_healthchecks_arg_custom_prefect_dir(ignore_healthchecks, tmpdir):
with open(os.path.join(tmpdir, "test"), "w+") as t:
t.write("asdf")
storage = Docker(ignore_healthchecks=ignore_healthchecks,
prefect_directory="/usr/local/prefect")
f = Flow("test")
storage.add_flow(f)
dpath = storage.create_dockerfile_object(directory=tmpdir)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
if ignore_healthchecks:
assert "RUN python /usr/local/prefect/healthcheck.py" not in output
else:
assert "RUN python /usr/local/prefect/healthcheck.py" in output
def test_create_dockerfile_with_weird_flow_name_custom_prefect_dir(tmpdir):
with open(os.path.join(tmpdir, "test"), "w+") as t:
t.write("asdf")
storage = Docker(
registry_url="test1",
base_image="test3",
prefect_directory="/tmp/prefect-is-c00l",
)
f = Flow("WHAT IS THIS !!! ~~~~")
storage.add_flow(f)
dpath = storage.create_dockerfile_object(directory=tmpdir)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
assert (
"COPY what-is-this.flow /tmp/prefect-is-c00l/flows/what-is-this.prefect"
in output)
def test_run_healthchecks_arg(ignore_healthchecks):
with tempfile.TemporaryDirectory() as tempdir_outside:
with open(os.path.join(tempdir_outside, "test"), "w+") as t:
t.write("asdf")
with tempfile.TemporaryDirectory() as tempdir:
storage = Docker(ignore_healthchecks=ignore_healthchecks)
f = Flow("test")
storage.add_flow(f)
dpath = storage.create_dockerfile_object(directory=tempdir)
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
if ignore_healthchecks:
assert "RUN python /opt/prefect/healthcheck.py" not in output
else:
assert "RUN python /opt/prefect/healthcheck.py" in output
def test_dockerfile_env_vars(tmpdir):
env_vars = OrderedDict([
("NUM", 1),
("STR_WITH_SPACES", "Hello world!"),
("STR_WITH_QUOTES", 'Hello "friend"'),
("STR_WITH_SINGLE_QUOTES", "'foo'"),
])
storage = Docker(env_vars=env_vars, )
storage.add_flow(Flow("foo"))
dpath = storage.create_dockerfile_object(directory=str(tmpdir))
with open(dpath, "r") as dockerfile:
output = dockerfile.read()
expected = textwrap.dedent("""
ENV NUM=1 \\
STR_WITH_SPACES='Hello world!' \\
STR_WITH_QUOTES='Hello "friend"' \\
STR_WITH_SINGLE_QUOTES="'foo'" \\
""")
assert expected in output
