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#!/usr/bin/python |
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# coding=utf-8 |
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''' |
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auto update batch job for ckan |
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<alex.sadleir@linkdigital.com.au> |
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1.0 26/05/2014 initial implementation |
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|
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TODO |
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- archive files in filestore |
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- update frequency reduced based on dataset metadata |
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- emails on HTTP errors |
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''' |
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|
| import requests |
import requests |
| import ckanapi |
import ckanapi |
| # copy (select id,url,format,extras from resource where extras like '%"autoupdate": "active"%') TO STDOUT WITH CSV; |
|
| # f759e4b6-723c-4863-8a26-1529d689cad8,http://data.gov.au/geoserver/geelong-roofprints-kml/wms?request=GetCapabilities,wms,"{""autoupdate"": ""active""}" |
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| import fileinput |
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| import csv |
import csv |
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import sys |
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import psycopg2 |
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import json |
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from subprocess import Popen, PIPE |
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|
| def updateresource(resource_id): |
def updateresource(resource_id, dataset_id): |
| url = 'http://data.disclosurelo.gs' |
print ' --- ' |
| api_key = '' |
ckan = ckanapi.RemoteCKAN(api_url,api_key) |
| db_credentials = '' |
|
| print resource_id |
|
| ckan = ckanapi.RemoteCKAN('http://data.disclosurelo.gs') |
|
| #ckan = ckanapi.RemoteCKAN('http://demo.ckan.org') |
#ckan = ckanapi.RemoteCKAN('http://demo.ckan.org') |
| resource = ckan.action.resource_show(id=resource_id) |
resource = ckan.action.resource_show(id=resource_id) |
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print 'updating '+resource['name']+'('+resource_id+', '+dataset_id+')' |
| print resource |
print resource |
| url = resource['url'] |
url = resource['url'] |
| #last_modified= 'Mon, 24 Feb 2014 01:48:29 GMT' |
#last_modified= 'Mon, 24 Feb 2014 01:48:29 GMT' |
| #etag='"1393206509.38-638"' |
#etag='"1393206509.38-638"' |
| headers={} |
headers={} |
| if 'etag' in resource: |
if 'etag' in resource: |
| headers['If-None-Match'] = resource['etag'] |
headers['If-None-Match'] = resource['etag'] |
| if 'file_last_modified' in resource: |
if 'file_last_modified' in resource: |
| headers["If-Modified-Since"] = resource['file_last_modified'] |
headers["If-Modified-Since"] = resource['file_last_modified'] |
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print headers |
| r = requests.head(url, headers=headers) |
r = requests.head(url, headers=headers) |
| if r.status_code == 304: |
if r.status_code == 304: |
| print 'not modified' |
print 'not modified' |
| return |
return |
| else: |
else: |
| print r.status_code |
print r.status_code |
| print r.headers |
print r.headers |
| if 'last-modified' in r.headers: |
if 'last-modified' in r.headers: |
| resource['file_last_modified'] = r.headers['last-modified'] |
resource['file_last_modified'] = r.headers['last-modified'] |
| if 'etag' in r.headers: |
if 'etag' in r.headers: |
| resource['etag'] = r.headers['etag'] |
resource['etag'] = r.headers['etag'] |
| #save updated resource |
#save updated resource |
| # result = ckan.action.resource_update(id,resource) |
print resource |
| if 'format' == 'shp': |
result = ckan.call_action('resource_update',resource) |
| print "geoingest!" db_settings_json, api_url, api_key, resource['dataset_id'] |
if resource['format'].lower() == 'shp' or resource['format'].lower() == 'kml': |
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print "geoingest!" |
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pargs= ['dga-spatialingestor.py', db_settings_json, api_url, api_key, dataset_id] |
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print pargs |
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p = Popen(pargs)#, stdout=PIPE, stderr=PIPE) |
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p.communicate() |
| else: |
else: |
| ckan.action.datapusher_submit(resource_id=id) |
print "datapusher!" |
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# https://github.com/ckan/ckan/blob/master/ckanext/datapusher/logic/action.py#L19 |
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ckan.action.datapusher_submit(resource_id=resource_id) |
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|
| if len(sys.argv) != 5: |
if len(sys.argv) != 4: |
| print "spatial ingester. command line: postgis_url api_url api_key" |
print "autoupdate ingester. command line: postgis_url api_url api_key" |
| sys.exit(errno.EACCES) |
sys.exit(-1) |
| else: |
else: |
| (path, db_settings_json, api_url, api_key) = sys.argv |
(path, db_settings_json, api_url, api_key) = sys.argv |
| db_settings = json.loads(db_settings_json) |
db_settings = json.loads(db_settings_json) |
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datastore_db_settings = dict(db_settings) |
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datastore_db_settings['dbname'] = db_settings['datastore_dbname'] |
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datastore_db_settings_json = json.dumps(datastore_db_settings) |
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|
| for line in fileinput.input(): |
#until https://github.com/ckan/ckan/pull/1732 is merged, use database directly |
| row = csv.reader(line) |
|
| updateresource(line.replace("\n","")) |
|
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|
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try: |
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conn = psycopg2.connect(dbname=db_settings['dbname'], user=db_settings['user'], password=db_settings['password'], host=db_settings['host']) |
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except: |
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failure("I am unable to connect to the database.") |
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# Open a cursor to perform database operations |
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cur = conn.cursor() |
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conn.set_isolation_level(0) |
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cur.execute('select resource.id resource_id, package.id dataset_id from resource inner join resource_group on resource.resource_group_id = resource_group.id inner join package on resource_group.package_id = package.id where resource.extras like \'%"autoupdate": "active"%\';') |
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row = cur.fetchone() |
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while row is not None: |
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updateresource(row[0],row[1]) |
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# process |
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row = cur.fetchone() |
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cur.close() |
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conn.close() |
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|