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from __future__ import absolute_import, division, print_function 

 

import hashlib 

import json 

import logging 

import os.path 

from collections import OrderedDict 

 

import jsonpatch 

import yaml 

 

from appr.display import print_deploy_result 

from appr.formats.appr.kub_base import KubBase 

from appr.platforms.kubernetes import ANNOTATIONS, Kubernetes, get_endpoint 

from appr.utils import colorize, mkdir_p 

 

logger = logging.getLogger(__name__) 

 

_mapping_tag = yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG 

 

 

class Kub(KubBase): 

media_type = 'appr' 

platform = "kubernetes" 

 

def _resource_name(self, resource): 

return resource.get('name', resource['value']['metadata']['name']) 

 

def _resource_build(self, kub, resource): 

self._annotate_resource(kub, resource) 

return { 

"file": 

resource['file'], 

"update_mode": 

resource.get('update_mode', 'update'), 

"hash": 

resource['value']['metadata']['annotations'].get(ANNOTATIONS['hash'], None), 

"protected": 

resource['protected'], 

"name": 

self._resource_name(resource), 

"kind": 

resource['value']['kind'].lower(), 

"endpoint": 

get_endpoint(resource['value']['kind'].lower()).format(namespace=self.namespace), 

"body": 

json.dumps(resource['value']) 

} 

 

# @TODO do it in jsonnet 

def _annotate_resource(self, kub, resource): 

sha = None 

if 'annotations' not in resource['value']['metadata']: 

resource['value']['metadata']['annotations'] = {} 

if resource.get('hash', True): 

sha = hashlib.sha256(json.dumps(resource['value'])).hexdigest() 

resource['value']['metadata']['annotations'][ANNOTATIONS['hash']] = sha 

annotation = resource['value']['metadata']['annotations'] 

annotation[ANNOTATIONS['version']] = kub.version 

annotation[ANNOTATIONS['package']] = kub.name 

annotation[ANNOTATIONS['parent']] = self.name 

annotation[ANNOTATIONS['update-mode']] = str( 

resource.get('update_mode', annotation.get(ANNOTATIONS['update-mode'], 

'update'))).lower() 

annotation[ANNOTATIONS['protected']] = str( 

resource.get('protected', annotation.get(ANNOTATIONS['protected'], 'false'))).lower() 

return resource 

 

def _create_namespaces(self): 

if self.namespace: 

ns = self.create_namespace(self.namespace) 

self._resources.insert(0, ns) 

 

def resources(self): 

""" Override resources to auto-create namespace""" 

if self._resources is None: 

self._resources = self.manifest.resources 

self._create_namespaces() 

return self._resources 

 

def _apply_patches(self, resources): 

for _, resource in resources.iteritems(): 

if self.namespace: 

if 'namespace' in resource['value']['metadata']: 

op = 'replace' 

else: 

op = 'add' 

resource['patch'].append({ 

"op": op, 

"path": "/metadata/namespace", 

"value": self.namespace 

}) 

 

if len(resource['patch']): 

patch = jsonpatch.JsonPatch(resource['patch']) 

result = patch.apply(resource['value']) 

resource['value'] = result 

return resources 

 

@property 

def kubClass(self): 

return Kub 

 

def create_namespace(self, namespace): 

value = {"apiVersion": "v1", "kind": "Namespace", "metadata": {"name": namespace}} 

 

resource = { 

"file": "%s-ns.yaml" % namespace, 

"name": namespace, 

"generated": True, 

"order": -1, 

"hash": False, 

"protected": True, 

"update_mode": 'update', 

"value": value, 

"patch": [], 

"variables": {}, 

"type": "namespace" 

} 

return resource 

 

def build(self): 

result = [] 

for kub in self.dependencies: 

result.append(self._dep_build(kub)) 

return {"deploy": result, "package": {"name": self.name, "version": self.version}} 

 

def _dep_build(self, kub): 

package = { 

"package": kub.name, 

"version": kub.version, 

"namespace": kub.namespace, 

"resources": [] 

} 

for resource in kub.resources(): 

package['resources'].\ 

append(self._resource_build(kub, resource)) 

return package 

 

def _process_deploy(self, dry=False, force=False, fmt="txt", proxy=None, action="create", 

dest="/tmp/appr"): 

 

def output_progress(kubsource, status, fmt="text"): 

if fmt == 'text': 

print(" --> %s (%s): %s" % (kubsource.name, kubsource.kind, colorize(status))) 

 

dest = os.path.join(dest, self.name, self.version) 

mkdir_p(dest) 

table = [] 

results = [] 

if fmt == "text": 

print("%s %s " % (action, self.name)) 

i = 0 

for kub in self.dependencies: 

package = self._dep_build(kub) 

i += 1 

pname = package["package"] 

version = package["version"] 

namespace = package["namespace"] 

if fmt == "text": 

print("\n %02d - %s:" % (i, package["package"])) 

for resource in package["resources"]: 

body = resource["body"] 

endpoint = resource["endpoint"] 

# Use API instead of kubectl 

with open( 

os.path.join(dest, "%s-%s" % (resource['name'], 

resource['file'].replace("/", "_"))), 

'wb') as f: 

f.write(body) 

kubresource = Kubernetes(namespace=namespace, body=body, endpoint=endpoint, 

proxy=proxy) 

status = getattr(kubresource, action)(force=force, dry=dry, strategy=resource.get( 

'update_mode', 'update')) 

if fmt == "text": 

output_progress(kubresource, status) 

result_line = OrderedDict([("package", pname), ("version", version), ( 

"kind", kubresource.kind), ("dry", dry), ("name", kubresource.name), ( 

"namespace", kubresource.namespace), ("status", status)]) 

 

if status != 'ok' and action == 'create': 

kubresource.wait(3) 

results.append(result_line) 

if fmt == "text": 

header = ["package", "version", "kind", "name", "namespace", "status"] 

display_line = [] 

for k in header: 

display_line.append(result_line[k]) 

table.append(display_line) 

if fmt == "text": 

print(print_deploy_result(table)) 

return results 

 

def deploy(self, *args, **kwargs): 

kwargs['action'] = 'create' 

return self._process_deploy(*args, **kwargs) 

 

def delete(self, *args, **kwargs): 

kwargs['action'] = 'delete' 

return self._process_deploy(*args, **kwargs)