/
test_layer1_workflow_execution.py
171 lines (147 loc) · 6.69 KB
/
test_layer1_workflow_execution.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
"""
Tests for Layer1 of Simple Workflow
"""
import time
import uuid
import json
import traceback
from boto.swf.layer1_decisions import Layer1Decisions
from test_layer1 import SimpleWorkflowLayer1TestBase
class SwfL1WorkflowExecutionTest(SimpleWorkflowLayer1TestBase):
"""
test a simple workflow execution
"""
def run_decider(self):
"""
run one iteration of a simple decision engine
"""
# Poll for a decision task.
tries = 0
while True:
dtask = self.conn.poll_for_decision_task(self._domain,
self._task_list, reverse_order=True)
if dtask.get('taskToken') is not None:
# This means a real decision task has arrived.
break
time.sleep(2)
tries += 1
if tries > 10:
# Give up if it's taking too long. Probably
# means something is broken somewhere else.
assert False, 'no decision task occurred'
# Get the most recent interesting event.
ignorable = (
'DecisionTaskScheduled',
'DecisionTaskStarted',
'DecisionTaskTimedOut',
)
event = None
for tevent in dtask['events']:
if tevent['eventType'] not in ignorable:
event = tevent
break
# Construct the decision response.
decisions = Layer1Decisions()
if event['eventType'] == 'WorkflowExecutionStarted':
activity_id = str(uuid.uuid1())
decisions.schedule_activity_task(activity_id,
self._activity_type_name, self._activity_type_version,
task_list=self._task_list,
input=event['workflowExecutionStartedEventAttributes']['input'])
elif event['eventType'] == 'ActivityTaskCompleted':
decisions.complete_workflow_execution(
result=event['activityTaskCompletedEventAttributes']['result'])
elif event['eventType'] == 'ActivityTaskFailed':
decisions.fail_workflow_execution(
reason=event['activityTaskFailedEventAttributes']['reason'],
details=event['activityTaskFailedEventAttributes']['details'])
else:
decisions.fail_workflow_execution(
reason='unhandled decision task type; %r' % (event['eventType'],))
# Send the decision response.
r = self.conn.respond_decision_task_completed(dtask['taskToken'],
decisions=decisions._data,
execution_context=None)
assert r is None
def run_worker(self):
"""
run one iteration of a simple worker engine
"""
# Poll for an activity task.
tries = 0
while True:
atask = self.conn.poll_for_activity_task(self._domain,
self._task_list, identity='test worker')
if atask.get('activityId') is not None:
# This means a real activity task has arrived.
break
time.sleep(2)
tries += 1
if tries > 10:
# Give up if it's taking too long. Probably
# means something is broken somewhere else.
assert False, 'no activity task occurred'
# Do the work or catch a "work exception."
reason = None
try:
result = json.dumps(sum(json.loads(atask['input'])))
except:
reason = 'an exception was raised'
details = traceback.format_exc()
if reason is None:
r = self.conn.respond_activity_task_completed(
atask['taskToken'], result)
else:
r = self.conn.respond_activity_task_failed(
atask['taskToken'], reason=reason, details=details)
assert r is None
def test_workflow_execution(self):
# Start a workflow execution whose activity task will succeed.
workflow_id = 'wfid-%.2f' % (time.time(),)
r = self.conn.start_workflow_execution(self._domain,
workflow_id,
self._workflow_type_name,
self._workflow_type_version,
execution_start_to_close_timeout='20',
input='[600, 15]')
# Need the run_id to lookup the execution history later.
run_id = r['runId']
# Move the workflow execution forward by having the
# decider schedule an activity task.
self.run_decider()
# Run the worker to handle the scheduled activity task.
self.run_worker()
# Complete the workflow execution by having the
# decider close it down.
self.run_decider()
# Check that the result was stored in the execution history.
r = self.conn.get_workflow_execution_history(self._domain,
run_id, workflow_id,
reverse_order=True)['events'][0]
result = r['workflowExecutionCompletedEventAttributes']['result']
assert json.loads(result) == 615
def test_failed_workflow_execution(self):
# Start a workflow execution whose activity task will fail.
workflow_id = 'wfid-%.2f' % (time.time(),)
r = self.conn.start_workflow_execution(self._domain,
workflow_id,
self._workflow_type_name,
self._workflow_type_version,
execution_start_to_close_timeout='20',
input='[600, "s"]')
# Need the run_id to lookup the execution history later.
run_id = r['runId']
# Move the workflow execution forward by having the
# decider schedule an activity task.
self.run_decider()
# Run the worker to handle the scheduled activity task.
self.run_worker()
# Complete the workflow execution by having the
# decider close it down.
self.run_decider()
# Check that the failure was stored in the execution history.
r = self.conn.get_workflow_execution_history(self._domain,
run_id, workflow_id,
reverse_order=True)['events'][0]
reason = r['workflowExecutionFailedEventAttributes']['reason']
assert reason == 'an exception was raised'