def test_json_content_missing_content_type(self):
"""
When a request is made with the json_content callback and the
content-type header is not set in the response headers then an error
should be raised.
"""
d = self.cleanup_d(self.client.request('GET', path='/hello'))
d.addCallback(json_content)
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['application/json']))
request.setResponseCode(200)
# Twisted will set the content type to "text/html" by default but this
# can be disabled by setting the default content type to None:
# https://twistedmatrix.com/documents/current/api/twisted.web.server.Request.html#defaultContentType
request.defaultContentType = None
request.write(json.dumps({}).encode('utf-8'))
request.finish()
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError, 'Expected header "Content-Type" to be '
'"application/json" but header not found in response')))
def test_mlb_signal_hup(self):
"""
When the marathon-lb client is used to send a SIGHUP signal to
marathon-lb, all the correct API endpoints are called.
"""
d = self.cleanup_d(self.client.mlb_signal_hup())
for lb in ['lb1', 'lb2']:
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='POST', url='http://%s:9090/_mlb_signal/hup' % (lb,)))
request.setResponseCode(200)
request.setHeader('content-type', 'text/plain')
request.write(b'Sent SIGHUP signal to marathon-lb')
request.finish()
responses = yield d
self.assertThat(len(responses), Equals(2))
for response in responses:
self.assertThat(response.code, Equals(200))
self.assertThat(response.headers, HasHeader(
'content-type', ['text/plain']))
response_text = yield response.text()
self.assertThat(response_text,
Equals('Sent SIGHUP signal to marathon-lb'))
def test_json_content_incorrect_content_type(self):
"""
When a request is made with the json_content callback and the
content-type header is set to a value other than 'application/json' in
the response headers then an error should be raised.
"""
d = self.cleanup_d(self.client.request('GET', path='/hello'))
d.addCallback(json_content)
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['application/json']))
request.setResponseCode(200)
request.setHeader('Content-Type', 'application/octet-stream')
request.write(json.dumps({}).encode('utf-8'))
request.finish()
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError,
'Expected header "Content-Type" to be "application/json" but '
'found "application/octet-stream" instead')))
def test_get_events_non_200(self):
"""
When a request is made to Marathon's event stream, and a non-200
response code is returned, an error should be raised.
"""
data = []
d = self.cleanup_d(self.client.get_events({'test': data.append}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/v2/events')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['text/event-stream']))
request.setResponseCode(202)
request.setHeader('Content-Type', 'text/event-stream')
json_data = {'hello': 'world'}
request.write(b'event: test\n')
request.write(b'data: %s\n' % (json.dumps(json_data).encode('utf-8'),))
request.write(b'\n')
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError, 'Non-200 response code (202) for url: '
'http://localhost:8080/v2/events')))
self.assertThat(data, Equals([]))
request.finish()
yield d
def test_get_events_incorrect_content_type(self):
"""
When a request is made to Marathon's event stream, and the content-type
header value returned is not "text/event-stream", an error should be
raised.
"""
data = []
d = self.cleanup_d(self.client.get_events({'test': data.append}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/v2/events')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['text/event-stream']))
request.setResponseCode(200)
request.setHeader('Content-Type', 'application/json')
json_data = {'hello': 'world'}
request.write(b'event: test\n')
request.write(b'data: %s\n' % (json.dumps(json_data).encode('utf-8'),))
request.write(b'\n')
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError,
'Expected header "Content-Type" to be "text/event-stream" but '
'found "application/json" instead')))
self.assertThat(data, Equals([]))
request.finish()
yield d
def test_get_events(self):
"""
When a request is made to Marathon's event stream, a callback should
receive JSON-decoded data before the connection is closed.
"""
data = []
d = self.cleanup_d(self.client.get_events({'test': data.append}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/v2/events')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['text/event-stream']))
request.setResponseCode(200)
request.setHeader('Content-Type', 'text/event-stream')
json_data = {'hello': 'world'}
request.write(b'event: test\n')
request.write(b'data: %s\n' % (json.dumps(json_data).encode('utf-8'),))
request.write(b'\n')
yield wait0()
self.assertThat(data, Equals([json_data]))
request.finish()
yield d
# Expect request.finish() to result in a logged failure
flush_logged_errors(ResponseDone)
def test_request_partial_failure(self):
"""
When a request is made and an error status code is returned from some
(but not all) of the matathon-lb instances, then the request returns
the list of responses with a None value for the unhappy request.
"""
d = self.cleanup_d(self.client.request('GET', path='/my-path'))
lb1_request = yield self.requests.get()
self.assertThat(lb1_request, HasRequestProperties(
method='GET', url='http://lb1:9090/my-path'))
lb2_request = yield self.requests.get()
self.assertThat(lb2_request, HasRequestProperties(
method='GET', url='http://lb2:9090/my-path'))
# Fail the first one
lb1_request.setResponseCode(500)
lb1_request.setHeader('content-type', 'text/plain')
lb1_request.write(b'Internal Server Error')
lb1_request.finish()
# ...but succeed the second
lb2_request.setResponseCode(200)
lb2_request.setHeader('content-type', 'text/plain')
lb2_request.write(b'Yes, I work')
lb2_request.finish()
responses = yield d
self.assertThat(responses, HasLength(2))
lb1_response, lb2_response = responses
self.assertThat(lb1_response, Is(None))
self.assertThat(lb2_response, MatchesStructure(
code=Equals(200),
headers=HasHeader('content-type', ['text/plain'])
))
lb2_response_content = yield lb2_response.content()
self.assertThat(lb2_response_content, Equals(b'Yes, I work'))
flush_logged_errors(HTTPError)
def test_params_precedence_over_url_query(self):
"""
When query parameters are specified as both the params kwarg and in the
URL, the params kwarg takes precedence.
"""
self.cleanup_d(self.client.request(
'GET', self.uri('/hello?from=mars'), params={'from': 'earth'}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello'), query={'from': ['earth']}))
request.setResponseCode(200)
request.finish()
def test_request_url(self):
"""
When a request is made with the url parameter set, that parameter
should be used as the base URL.
"""
self.cleanup_d(self.client.request(
'GET', path='/hello', url='http://localhost:9000'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url='http://localhost:9000/hello'))
request.setResponseCode(200)
request.finish()
def test_url_query_as_params(self):
"""
When query parameters are specified in the URL, those parameters are
reflected in the request.
"""
self.cleanup_d(self.client.request(
'GET', self.uri('/hello?from=earth')))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello'), query={'from': ['earth']}))
request.setResponseCode(200)
request.finish()
def test_get_apps(self):
"""
When we request the list of apps from Marathon, we should receive the
list of apps with some information.
"""
d = self.cleanup_d(self.client.get_apps())
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/v2/apps')))
apps = {
'apps': [
{
'id': '/product/us-east/service/myapp',
'cmd': 'env && sleep 60',
'constraints': [
[
'hostname',
'UNIQUE',
''
]
],
'container': None,
'cpus': 0.1,
'env': {
'LD_LIBRARY_PATH': '/usr/local/lib/myLib'
},
'executor': '',
'instances': 3,
'mem': 5.0,
'ports': [
15092,
14566
],
'tasksRunning': 0,
'tasksStaged': 1,
'uris': [
'https://raw.github.com/mesosphere/marathon/master/'
'README.md'
],
'version': '2014-03-01T23:42:20.938Z'
}
]
}
json_response(request, apps)
res = yield d
self.assertThat(res, Equals(apps['apps']))
def test_url_overrides(self):
"""
When URL parts are overridden via keyword arguments, those overrides
should be reflected in the request.
"""
self.cleanup_d(self.client.request(
'GET', 'http://example.com:8000/hello#section1',
scheme='https', host='example2.com', port='9000', path='/goodbye',
fragment='section2'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url='https://example2.com:9000/goodbye#section2'))
request.setResponseCode(200)
request.finish()
def test_auth(self):
"""
When basic auth credentials are specified as the auth kwarg, the
encoded credentials are present in the request headers.
"""
self.cleanup_d(self.client.request(
'GET', path='/hello', auth=('user', 'pa$$word')))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(
request.requestHeaders,
HasHeader('Authorization', ['Basic dXNlcjpwYSQkd29yZA==']))
request.setResponseCode(200)
request.finish()
def test_url_userinfo_as_auth(self):
"""
When basic auth credentials are specified in the URL, the encoded
credentials are present in the request headers.
"""
self.cleanup_d(self.client.request(
'GET', 'http://*****:*****@localhost:8000/hello'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(
request.requestHeaders,
HasHeader('Authorization', ['Basic dXNlcjpwYSQkd29yZA==']))
request.setResponseCode(200)
request.finish()
def test_auth_precedence_over_url_userinfo(self):
"""
When basic auth credentials are specified as both the auth kwarg and in
the URL, the credentials in the auth kwarg take precedence.
"""
self.cleanup_d(self.client.request(
'GET', 'http://*****:*****@localhost:8000/hello',
auth=('user', 'pa$$word')))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(
request.requestHeaders,
HasHeader('Authorization', ['Basic dXNlcjpwYSQkd29yZA==']))
request.setResponseCode(200)
request.finish()
def test_get_json_field_error(self):
"""
When get_json_field is used to make a request but the response code
indicates an error, an HTTPError should be raised.
"""
d = self.cleanup_d(
self.client.get_json_field('field-key', path='/my-path'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/my-path')))
request.setResponseCode(404)
request.write(b'Not found\n')
request.finish()
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError, '404 Client Error for url: %s' % self.uri('/my-path'))))
def test_request_success(self):
"""
When a request is made, it is made to all marathon-lb instances and
the responses are returned.
"""
d = self.cleanup_d(self.client.request('GET', path='/my-path'))
for lb in ['lb1', 'lb2']:
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url='http://%s:9090/my-path' % (lb,)))
request.setResponseCode(200)
request.finish()
responses = yield d
self.assertThat(responses, HasLength(2))
for response in responses:
self.assertThat(response.code, Equals(200))
def test_get_json_field(self):
"""
When get_json_field is used to make a request, the response is
deserialized from JSON and the value of the specified field is
returned.
"""
d = self.cleanup_d(
self.client.get_json_field('field-key', path='/my-path'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/my-path')))
json_response(request, {
'field-key': 'field-value',
'other-field-key': 'do-not-care'
})
res = yield d
self.assertThat(res, Equals('field-value'))
def test_server_error_response(self):
"""
When a request is made and the raise_for_status callback is added and a
5xx response code is returned, a HTTPError should be raised to indicate
a server error.
"""
d = self.cleanup_d(self.client.request('GET', path='/hello'))
d.addCallback(raise_for_status)
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
request.setResponseCode(502)
request.write(b'Bad gateway\n')
request.finish()
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
HTTPError, '502 Server Error for url: %s' % self.uri('/hello'))))
def test_request_json_data(self):
"""
When a request is made with the json_data parameter set, that data
should be sent as JSON and the content-type header should be set to
indicate this.
"""
self.cleanup_d(self.client.request(
'GET', path='/hello', json_data={'test': 'hello'}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.requestHeaders, HasHeader(
'content-type', ['application/json']))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['application/json']))
self.assertThat(read_request_json(request), Equals({'test': 'hello'}))
request.setResponseCode(200)
request.finish()
def test_request(self):
"""
When a request is made, it should be made with the correct method,
address and headers, and should contain an empty body. The response
should be returned.
"""
d = self.cleanup_d(self.client.request('GET', path='/hello'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.content.read(), Equals(b''))
request.setResponseCode(200)
request.write(b'hi\n')
request.finish()
response = yield d
text = yield response.text()
self.assertThat(text, Equals('hi\n'))
def test_get_events_multiple_callbacks(self):
"""
When a request is made to Marathon's event stream, and there are
events for multiple callbacks, those callbacks should receive
JSON-decoded data for each event.
"""
data1 = []
data2 = []
d = self.cleanup_d(self.client.get_events({
'test1': data1.append,
'test2': data2.append
}))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/v2/events')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['text/event-stream']))
request.setResponseCode(200)
request.setHeader('Content-Type', 'text/event-stream')
json_data1 = {'hello': 'world'}
request.write(b'event: test1\n')
request.write(b'data: %s\n' % (json.dumps(json_data1).encode('utf-8')))
request.write(b'\n')
json_data2 = {'hello': 'computer'}
request.write(b'event: test2\n')
request.write(b'data: %s\n' % (json.dumps(json_data2).encode('utf-8')))
request.write(b'\n')
yield wait0()
self.assertThat(data1, Equals([json_data1]))
self.assertThat(data2, Equals([json_data2]))
request.finish()
yield d
# Expect request.finish() to result in a logged failure
flush_logged_errors(ResponseDone)
def test_request_debug_log(self):
"""
When a request is made in debug mode, things should run smoothly.
(Don't really want to check the log output here, just that things don't
break.)
"""
self.client.debug = True
d = self.cleanup_d(self.client.request('GET', path='/hello'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.content.read(), Equals(b''))
request.setResponseCode(200)
request.write(b'hi\n')
request.finish()
response = yield d
text = yield response.text()
self.assertThat(text, Equals('hi\n'))
def test_get_json_field_missing(self):
"""
When get_json_field is used to make a request, the response is
deserialized from JSON and if the specified field is missing, an error
is raised.
"""
d = self.cleanup_d(
self.client.get_json_field('field-key', path='/my-path'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/my-path')))
json_response(request, {'other-field-key': 'do-not-care'})
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
KeyError,
'\'Unable to get value for "field-key" from Marathon response: '
'"{"other-field-key": "do-not-care"}"\''
)))
def test_request_success(self):
"""
When we make a request and there are multiple Marathon endpoints
specified, the first endpoint is used.
"""
agent = PerLocationAgent()
agent.add_agent(b'localhost:8080', self.fake_server.get_agent())
agent.add_agent(b'localhost:9090', FailingAgent())
client = MarathonClient(
['http://localhost:8080', 'http://localhost:9090'],
client=treq_HTTPClient(agent))
d = self.cleanup_d(client.request('GET', path='/my-path'))
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url='http://localhost:8080/my-path'))
request.setResponseCode(200)
request.finish()
yield d
def test_json_content(self):
"""
When a request is made with the json_content callback and the
'application/json' content type is set in the response headers then the
JSON should be successfully parsed.
"""
d = self.cleanup_d(self.client.request('GET', path='/hello'))
d.addCallback(json_content)
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url=self.uri('/hello')))
self.assertThat(request.requestHeaders,
HasHeader('accept', ['application/json']))
request.setResponseCode(200)
request.setHeader('Content-Type', 'application/json')
request.write(json.dumps({}).encode('utf-8'))
request.finish()
response = yield d
self.assertThat(response, Equals({}))
def test_request_failure(self):
"""
When the requests to all the marathon-lb instances have a bad status
code then an error should be raised.
"""
d = self.cleanup_d(self.client.request('GET', path='/my-path'))
for lb in ['lb1', 'lb2']:
request = yield self.requests.get()
self.assertThat(request, HasRequestProperties(
method='GET', url='http://%s:9090/my-path' % (lb,)))
request.setResponseCode(500)
request.setHeader('content-type', 'text/plain')
request.write(b'Internal Server Error')
request.finish()
yield wait0()
self.assertThat(d, failed(WithErrorTypeAndMessage(
RuntimeError,
'Failed to make a request to all marathon-lb instances'
)))
flush_logged_errors(HTTPError)
