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slave_sync_gs_wms.py
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slave_sync_gs_wms.py
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import json
import logging
import re
import requests
import slave_sync_env as settings
from slave_sync_task import (
update_wmsstore_job,update_wmslayer_job,remove_wmslayer_job,remove_wmsstore_job,gs_task_filter,
get_http_response_exception
)
logger = logging.getLogger(__name__)
update_headers = {'content-type':'application/xml','Accept': 'application/xml'}
task_name = lambda t: "{0}:{1}".format(t["workspace"],t["name"])
def get_store_name(workspace,store_name):
"""
return the name of the wms store
"""
return store_name
def get_stores_url(rest_url,workspace):
"""
return the url of the wms stores
"""
return "{0}/workspaces/{1}/wmsstores.xml".format(rest_url,workspace)
def get_store_url(rest_url,workspace,store_name,f='xml'):
"""
return the url of the wms store
"""
return "{0}/workspaces/{1}/wmsstores/{2}.{3}".format(rest_url,workspace,store_name,f)
def get_wmsstores_url(rest_url,workspace,f="xml"):
"""
return the url of the wms store layers
"""
return "{0}/workspaces/{1}/wmsstores.{2}".format(rest_url,workspace,f)
def get_layers_url(rest_url,workspace,store_name,f='xml'):
"""
return the url of the wms store layers
"""
return "{0}/workspaces/{1}/wmsstores/{2}/wmslayers.{3}".format(rest_url,workspace,store_name,f)
def get_layer_url(rest_url,workspace,store_name,layer_name,f='xml'):
"""
return the url of the wms layer
"""
return "{0}/workspaces/{1}/wmsstores/{2}/wmslayers/{3}.{4}?recurse=true".format(rest_url,workspace,store_name,layer_name,f)
def _update_store(sync_job,task_metadata,task_status,rest_url,username,password,stage=None):
"""
update a store
"""
if sync_job.get('geoserver_setting',None) is None:
sync_job['geoserver_setting'] = {}
res = requests.get(get_store_url(rest_url,sync_job['workspace'],sync_job['name']), auth=(username,password))
if res.status_code == 200:
http_method = requests.put
request_url = get_store_url(rest_url,sync_job['workspace'],sync_job['name'])
else:
http_method = requests.post
request_url = get_stores_url(rest_url,sync_job['workspace'])
template = settings.template_env.get_template('wms_store.xml')
res = http_method(request_url, auth=(username, password), headers=update_headers, data=template.render(sync_job))
if res.status_code >= 400:
raise Exception("{0}: {1}".format(res.status_code, get_http_response_exception(res)))
def update_store(sync_job,task_metadata,task_status):
settings.apply_to_geoservers(sync_job,task_metadata,task_status,_update_store,lambda index:(settings.GEOSERVER_REST_URL[index],settings.GEOSERVER_USERNAME[index],settings.GEOSERVER_PASSWORD[index]))
re_laye_not_in_capabilitiles_doc = re.compile("Could\snot\sfind\slayer.+in\sthe\sserver\scapabilitiles\sdocument",re.IGNORECASE|re.DOTALL)
re_already_exist_in_workspace = re.compile("Resource\snamed.+already\sexists\sin\snamespace.+",re.IGNORECASE|re.DOTALL)
def _update_layer(sync_job,task_metadata,task_status,rest_url,username,password,stage=None):
"""
update a layer
"""
sync_job['applications'] = sync_job.get('applications') or []
sync_job['keywords'] = sync_job.get('keywords') or []
if (sync_job.get('override_bbox',False)):
#sync_job["bbox"] = json.loads(sync_job["bbox"])
pass
template = settings.template_env.get_template('wms_layer.xml')
xmlData = template.render(sync_job).encode("utf-8")
failover = True
while True:
res = requests.get(get_layer_url(rest_url,sync_job['workspace'],sync_job['store'],sync_job['name']), auth=(username, password))
if res.status_code == 200:
http_method = requests.put
request_url = get_layer_url(rest_url,sync_job['workspace'],sync_job['store'],sync_job['name'])
else:
http_method = requests.post
request_url = get_layers_url(rest_url,sync_job['workspace'],sync_job['store'])
res = http_method(request_url, auth=(username, password), headers=update_headers, data=xmlData)
if res.status_code >= 400:
errMsg = get_http_response_exception(res)
if failover and re_already_exist_in_workspace.search(errMsg):
failover = False
#check whether layer exist or not, if exist, delete it.
res1 = requests.get(get_wmsstores_url(rest_url,sync_job['workspace'],'json'), auth=(username, password))
if res1.status_code == 200:
isExist = False
for store in res1.json().get("wmsStores",{}).get("wmsStore",[]):
res2 = requests.get(get_layer_url(rest_url,sync_job['workspace'],store["name"],sync_job['name']), auth=(username, password))
if res2.status_code == 200:
#layer exist,delete it
isExist = True
res3 = requests.delete(get_layer_url(rest_url,sync_job['workspace'],store['name'],sync_job['name']), auth=(username, password))
if res3.status_code >= 400:
raise Exception("{0}: {1}".format(res3.status_code, get_http_response_exception(res3)))
break
if isExist:
continue
raise Exception("{0}: {1}".format(res.status_code, get_http_response_exception(res)))
else:
break
def update_layer(sync_job,task_metadata,task_status):
settings.apply_to_geoservers(sync_job,task_metadata,task_status,_update_layer,lambda index:(settings.GEOSERVER_REST_URL[index],settings.GEOSERVER_USERNAME[index],settings.GEOSERVER_PASSWORD[index]))
def _remove_layer(sync_job,task_metadata,task_status,rest_url,username,password,stage=None):
"""
remove a layer
"""
res = requests.get(get_layer_url(rest_url,sync_job['workspace'],sync_job['store'],sync_job['name']), auth=(username, password))
if res.status_code == 200:
#layer exist,delete it
res = requests.delete(get_layer_url(rest_url,sync_job['workspace'],sync_job['store'],sync_job['name']), auth=(username, password))
if res.status_code >= 400:
raise Exception("{0}: {1}".format(res.status_code, get_http_response_exception(res)))
def remove_layer(sync_job,task_metadata,task_status):
settings.apply_to_geoservers(sync_job,task_metadata,task_status,_remove_layer,lambda index:(settings.GEOSERVER_REST_URL[index],settings.GEOSERVER_USERNAME[index],settings.GEOSERVER_PASSWORD[index]))
def _remove_store(sync_job,task_metadata,task_status,rest_url,username,password,stage=None):
"""
remove a store
"""
logger.info("Begin to remove store ({}).".format(sync_job['name']))
res = requests.get(get_store_url(rest_url,sync_job['workspace'],sync_job['name']), auth=(username, password))
if res.status_code == 200:
#store exist,delete it
res = requests.delete(get_store_url(rest_url,sync_job['workspace'],sync_job['name']), auth=(username, password))
if res.status_code >= 400:
raise Exception("{0}: {1}".format(res.status_code, get_http_response_exception(res)))
def remove_store(sync_job,task_metadata,task_status):
settings.apply_to_geoservers(sync_job,task_metadata,task_status,_remove_store,lambda index:(settings.GEOSERVER_REST_URL[index],settings.GEOSERVER_USERNAME[index],settings.GEOSERVER_PASSWORD[index]))
tasks_metadata = [
("update_wmsstore", update_wmsstore_job, gs_task_filter, task_name, update_store),
("update_wmslayer", update_wmslayer_job, gs_task_filter, task_name, update_layer),
("remove_wmslayer", remove_wmslayer_job, gs_task_filter, task_name, remove_layer),
("remove_wmsstore", remove_wmsstore_job, gs_task_filter, task_name, remove_store)
]