9463: Resume cache implementation (WIP)

[arvados.git] / sdk / python / arvados / __init__.py

diff --git a/sdk/python/arvados/__init__.py b/sdk/python/arvados/__init__.py
index 060ed95d959531917749584176c5f42b8c453f66..b74f828f4bd04a2a6321aa50e5f823cb3a2496ab 100644 (file)
--- a/sdk/python/arvados/__init__.py
+++ b/sdk/python/arvados/__init__.py
@@ -18,10 +18,12 @@ import fcntl
 import time
 import threading
 
-from api import *
-from collection import *
+from .api import api, http_cache
+from collection import CollectionReader, CollectionWriter, ResumableCollectionWriter
 from keep import *
 from stream import *
+from arvfile import StreamFileReader
+from retry import RetryLoop
 import errors
 import util
 
@@ -36,36 +38,60 @@ logger.addHandler(log_handler)
 logger.setLevel(logging.DEBUG if config.get('ARVADOS_DEBUG')
                 else logging.WARNING)
 
-def task_set_output(self,s):
-    api('v1').job_tasks().update(uuid=self['uuid'],
-                                 body={
-            'output':s,
-            'success':True,
-            'progress':1.0
-            }).execute()
+def task_set_output(self, s, num_retries=5):
+    for tries_left in RetryLoop(num_retries=num_retries, backoff_start=0):
+        try:
+            return api('v1').job_tasks().update(
+                uuid=self['uuid'],
+                body={
+                    'output':s,
+                    'success':True,
+                    'progress':1.0
+                }).execute()
+        except errors.ApiError as error:
+            if retry.check_http_response_success(error.resp.status) is None and tries_left > 0:
+                logger.debug("task_set_output: job_tasks().update() raised {}, retrying with {} tries left".format(repr(error),tries_left))
+            else:
+                raise
 
 _current_task = None
-def current_task():
+def current_task(num_retries=5):
     global _current_task
     if _current_task:
         return _current_task
-    t = api('v1').job_tasks().get(uuid=os.environ['TASK_UUID']).execute()
-    t = UserDict.UserDict(t)
-    t.set_output = types.MethodType(task_set_output, t)
-    t.tmpdir = os.environ['TASK_WORK']
-    _current_task = t
-    return t
+
+    for tries_left in RetryLoop(num_retries=num_retries, backoff_start=2):
+        try:
+            task = api('v1').job_tasks().get(uuid=os.environ['TASK_UUID']).execute()
+            task = UserDict.UserDict(task)
+            task.set_output = types.MethodType(task_set_output, task)
+            task.tmpdir = os.environ['TASK_WORK']
+            _current_task = task
+            return task
+        except errors.ApiError as error:
+            if retry.check_http_response_success(error.resp.status) is None and tries_left > 0:
+                logger.debug("current_task: job_tasks().get() raised {}, retrying with {} tries left".format(repr(error),tries_left))
+            else:
+                raise
 
 _current_job = None
-def current_job():
+def current_job(num_retries=5):
     global _current_job
     if _current_job:
         return _current_job
-    t = api('v1').jobs().get(uuid=os.environ['JOB_UUID']).execute()
-    t = UserDict.UserDict(t)
-    t.tmpdir = os.environ['JOB_WORK']
-    _current_job = t
-    return t
+
+    for tries_left in RetryLoop(num_retries=num_retries, backoff_start=2):
+        try:
+            job = api('v1').jobs().get(uuid=os.environ['JOB_UUID']).execute()
+            job = UserDict.UserDict(job)
+            job.tmpdir = os.environ['JOB_WORK']
+            _current_job = job
+            return job
+        except errors.ApiError as error:
+            if retry.check_http_response_success(error.resp.status) is None and tries_left > 0:
+                logger.debug("current_job: jobs().get() raised {}, retrying with {} tries left".format(repr(error),tries_left))
+            else:
+                raise
 
 def getjobparam(*args):
     return current_job()['script_parameters'].get(*args)
@@ -82,11 +108,16 @@ class JobTask(object):
 
 class job_setup:
     @staticmethod
-    def one_task_per_input_file(if_sequence=0, and_end_task=True, input_as_path=False):
+    def one_task_per_input_file(if_sequence=0, and_end_task=True, input_as_path=False, api_client=None):
         if if_sequence != current_task()['sequence']:
             return
+
+        if not api_client:
+            api_client = api('v1')
+
         job_input = current_job()['script_parameters']['input']
-        cr = CollectionReader(job_input)
+        cr = CollectionReader(job_input, api_client=api_client)
+        cr.normalize()
         for s in cr.all_streams():
             for f in s.all_files():
                 if input_as_path:
@@ -101,9 +132,9 @@ class job_setup:
                         'input':task_input
                         }
                     }
-                api('v1').job_tasks().create(body=new_task_attrs).execute()
+                api_client.job_tasks().create(body=new_task_attrs).execute()
         if and_end_task:
-            api('v1').job_tasks().update(uuid=current_task()['uuid'],
+            api_client.job_tasks().update(uuid=current_task()['uuid'],
                                        body={'success':True}
                                        ).execute()
             exit(0)
@@ -130,5 +161,3 @@ class job_setup:
                                        body={'success':True}
                                        ).execute()
             exit(0)
-
-