How to fetch a replica created asynchronously using the ArcGIS python API?

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01-31-2019 09:49 PM
BenNadler
New Contributor III

Per the documentation,  create replica  can be called using 

manager.create(title,ids,layer_queries=export_params, return_attachments=True, attachments_sync_direction = None, sync_direction=None, data_format='filegdb',asynchronous=True)

The response from this call is a job URL

How do you manage this process of monitoring the job for completion and then downloading the result?

I could use urllib3 requests but looking for a cleaner method

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2 Replies
simoxu
by MVP Regular Contributor
MVP Regular Contributor

Not sure I correctly understand what you mean 'a cleaner method'.

It seems to me you have to check the status manually to make sure the creation of the replica is completed before you can use it. 

The status are quite specific to replica creation in ArcGIS:

"status": "<Pending | InProgress | Completed | Failed | ImportChanges | ExportChanges | ExportingData | ExportingSnapshot | ExportAttachments | ImportAttachments | ProvisioningReplica | UnRegisteringReplica | CompletedWithErrors>"

It's similar to submitting an asynchronous Geoprocessing request, so you can use the following code to get a jump start if you like. 

import urllib, json, time

# the response of an asynchronous request is an url, now start checking the status

submitJson = json.loads(submitResponse.read())

if 'jobId' in submitJson:
jobID = submitJson['jobId']
status = submitJson['jobStatus']
jobUrl = taskUrl + "/jobs/" + jobID

while status == "esriJobSubmitted" or status == "esriJobExecuting":
print "checking to see if job is completed..."
time.sleep(1)

jobResponse = urllib.urlopen(jobUrl, "f=json")
jobJson = json.loads(jobResponse.read())

if 'jobStatus' in jobJson:
status = jobJson['jobStatus']

if status == "esriJobSucceeded":
if 'results' in jobJson:
resultsUrl = jobUrl + "/results/"
resultsJson = jobJson['results']
for paramName in resultsJson.keys():
resultUrl = resultsUrl + paramName
resultResponse = urllib.urlopen(resultUrl, "f=json")
resultJson = json.loads(resultResponse.read())
print resultJson

if status == "esriJobFailed":
if 'messages' in jobJson:
print jobJson['messages']

else:
print "no jobId found in the response"‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Note: The above code snippet is from ESRI help:

Using a geoprocessing service in Python scripts—Documentation | ArcGIS Enterprise 

Hope this is helpful

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BenNadler
New Contributor III

Thanks for the reply. I am using requests to do the same thing.

However, it would be nice if the ArcGIS API had something for this.

By "Cleaner" I mean a concise ArcGIS API method for this instead of using urllib and json.

Not to mention you have to throw a token call form gis._conf.token.

Seems like an omission to have a very clean method to call the create Replica but no way for the API to download it.

Maybe manager.job.status?

or manager.job.download?

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