313 lines
7.6 KiB
Python
313 lines
7.6 KiB
Python
from boto3 import client
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from datetime import datetime, timezone
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from furl import furl
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from json import dumps
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from logging import getLogger
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from os import environ
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from requests import Session
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from urllib.parse import urljoin
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from uuid import UUID
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from wal_e.cmd import configure_backup_cxt
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from .utils import Attrs, defaulting, these
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logger = getLogger(__name__)
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session = Session()
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def request(cluster, path, **kwargs):
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if 'timeout' not in kwargs:
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# sane default timeout
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kwargs['timeout'] = (5, 15)
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if cluster.cert_file and cluster.key_file:
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kwargs['cert'] = (cluster.cert_file, cluster.key_file)
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return session.get(
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urljoin(cluster.api_server_url, path),
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auth=cluster.auth,
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verify=cluster.ssl_ca_cert,
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**kwargs
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)
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def request_post(cluster, path, data, **kwargs):
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if 'timeout' not in kwargs:
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# sane default timeout
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kwargs['timeout'] = 5
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if cluster.cert_file and cluster.key_file:
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kwargs['cert'] = (cluster.cert_file, cluster.key_file)
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return session.post(
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urljoin(cluster.api_server_url, path),
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data=data,
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auth=cluster.auth,
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verify=cluster.ssl_ca_cert,
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**kwargs
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)
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def request_put(cluster, path, data, **kwargs):
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if 'timeout' not in kwargs:
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# sane default timeout
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kwargs['timeout'] = 5
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if cluster.cert_file and cluster.key_file:
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kwargs['cert'] = (cluster.cert_file, cluster.key_file)
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return session.put(
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urljoin(cluster.api_server_url, path),
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data=data,
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auth=cluster.auth,
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verify=cluster.ssl_ca_cert,
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**kwargs
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)
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def request_delete(cluster, path, **kwargs):
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if 'timeout' not in kwargs:
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# sane default timeout
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kwargs['timeout'] = 5
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if cluster.cert_file and cluster.key_file:
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kwargs['cert'] = (cluster.cert_file, cluster.key_file)
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return session.delete(
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urljoin(cluster.api_server_url, path),
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auth=cluster.auth,
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verify=cluster.ssl_ca_cert,
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**kwargs
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)
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def resource_api_version(resource_type):
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return {
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'postgresqls': 'apis/acid.zalan.do/v1',
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'statefulsets': 'apis/apps/v1beta1',
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}.get(resource_type, 'api/v1')
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def encode_labels(label_selector):
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return ','.join([
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f'{label}={value}'
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for label, value in label_selector.items()
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])
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def kubernetes_url(
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resource_type,
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namespace='default',
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resource_name=None,
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label_selector=None,
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):
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return furl('/').add(
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path=(
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resource_api_version(resource_type).split('/')
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+ (
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['namespaces', namespace]
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if namespace
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else []
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)
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+ [resource_type]
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+ (
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[resource_name]
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if resource_name
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else []
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)
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),
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args=(
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{'labelSelector': encode_labels(label_selector)}
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if label_selector
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else {}
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),
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).url
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def kubernetes_get(cluster, **kwargs):
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response = request(cluster, kubernetes_url(**kwargs))
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if response.status_code == 404:
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return None
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if response.status_code >= 400:
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response.raise_for_status()
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return response.json()
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def read_pods(cluster, namespace, spilo_cluster):
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return kubernetes_get(
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cluster=cluster,
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resource_type='pods',
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namespace=namespace,
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label_selector={'version': spilo_cluster},
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)
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def read_pod(cluster, namespace, resource_name):
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return kubernetes_get(
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cluster=cluster,
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resource_type='pods',
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namespace=namespace,
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resource_name=resource_name,
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label_selector={'application': 'spilo'},
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)
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def read_service(cluster, namespace, resource_name):
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return kubernetes_get(
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cluster=cluster,
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resource_type='services',
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namespace=namespace,
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resource_name=resource_name,
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label_selector={'application': 'spilo'},
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)
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def read_statefulset(cluster, namespace, resource_name):
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return kubernetes_get(
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cluster=cluster,
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resource_type='statefulsets',
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namespace=namespace,
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resource_name=resource_name,
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label_selector={'application': 'spilo'},
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)
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def read_postgresql(cluster, namespace, resource_name):
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return kubernetes_get(
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cluster=cluster,
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resource_type='postgresqls',
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namespace=namespace,
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resource_name=resource_name,
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)
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def read_postgresqls(cluster, namespace):
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return kubernetes_get(
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cluster=cluster,
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resource_type='postgresqls',
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namespace=namespace,
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)
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def read_namespaces(cluster):
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return kubernetes_get(
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cluster=cluster,
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resource_type='namespaces',
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namespace=None,
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)
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def create_postgresql(cluster, namespace, definition):
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path = kubernetes_url(
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resource_type='postgresqls',
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namespace=namespace,
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)
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try:
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r = request_post(cluster, path, dumps(definition))
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r.raise_for_status()
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return True
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except Exception as ex:
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logger.exception("K8s create request failed")
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return False
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def apply_postgresql(cluster, namespace, resource_name, definition):
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path = kubernetes_url(
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resource_type='postgresqls',
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namespace=namespace,
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resource_name=resource_name,
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)
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try:
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r = request_put(cluster, path, dumps(definition))
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r.raise_for_status()
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return True
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except Exception as ex:
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logger.exception("K8s create request failed")
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return False
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def remove_postgresql(cluster, namespace, resource_name):
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path = kubernetes_url(
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resource_type='postgresqls',
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namespace=namespace,
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resource_name=resource_name,
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)
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try:
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r = request_delete(cluster, path)
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r.raise_for_status()
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return True
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except Exception as ex:
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logger.exception("K8s delete request failed")
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return False
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def read_stored_clusters(bucket, prefix, delimiter='/'):
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return [
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prefix['Prefix'].split('/')[-2]
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for prefix in these(
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client('s3').list_objects(
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Bucket=bucket,
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Delimiter=delimiter,
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Prefix=prefix,
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),
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'CommonPrefixes',
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)
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]
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def read_versions(
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pg_cluster,
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bucket,
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s3_endpoint,
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prefix,
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delimiter='/',
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use_aws_instance_profile=False,
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):
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return [
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'base' if uid == 'wal' else uid
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for prefix in these(
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client('s3').list_objects(
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Bucket=bucket,
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Delimiter=delimiter,
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Prefix=prefix + pg_cluster + delimiter,
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),
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'CommonPrefixes',
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)
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for uid in [prefix['Prefix'].split('/')[-2]]
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if uid == 'wal' or defaulting(lambda: UUID(uid))
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]
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def read_basebackups(
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pg_cluster,
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uid,
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bucket,
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s3_endpoint,
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prefix,
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delimiter='/',
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use_aws_instance_profile=False,
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):
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environ['WALE_S3_ENDPOINT'] = s3_endpoint
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suffix = '' if uid == 'base' else '/' + uid
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return [
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{
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key: value
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for key, value in basebackup.__dict__.items()
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if isinstance(value, str) or isinstance(value, int)
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}
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for basebackup in Attrs.call(
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f=configure_backup_cxt,
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aws_instance_profile=use_aws_instance_profile,
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s3_prefix=f's3://{bucket}/{prefix}{pg_cluster}{suffix}/wal/',
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)._backup_list(detail=True)
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]
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def parse_time(s: str):
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return (
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datetime.strptime(s, '%Y-%m-%dT%H:%M:%SZ')
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.replace(tzinfo=timezone.utc)
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.timestamp()
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)
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