-# Copyright 2020 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from charms.layer.caas_base import pod_spec_set
-from charms.reactive import endpoint_from_flag
-from charms.reactive import when, when_not, hook
-from charms.reactive.flags import set_flag, clear_flag
-from charmhelpers.core.hookenv import (
- log,
- metadata,
- config,
-)
-from charms import layer
-
-
-@hook("upgrade-charm")
-@when("leadership.is_leader")
-def upgrade():
- clear_flag("ui-k8s.configured")
-
-
-@when("config.changed")
-@when("leadership.is_leader")
-def restart():
- clear_flag("ui-k8s.configured")
-
-
-@when_not("mysql.available")
-@when_not("ui-k8s.configured")
-@when("leadership.is_leader")
-def waiting_for_mysql():
- layer.status.waiting("Waiting for mysql to be available")
-
-
-@when_not("nbi.ready")
-@when_not("ui-k8s.configured")
-@when("leadership.is_leader")
-def waiting_for_nbi():
- layer.status.waiting("Waiting for nbi to be available")
-
-
-@when("mysql.available", "nbi.ready")
-@when_not("ui-k8s.configured")
-@when("leadership.is_leader")
-def configure():
-
- layer.status.maintenance("Configuring ui container")
- try:
- mysql = endpoint_from_flag("mysql.available")
- nbi = endpoint_from_flag("nbi.ready")
- nbi_unit = nbi.nbis()[0]
- nbi_host = "{}".format(nbi_unit["host"])
- spec = make_pod_spec(
- mysql.host(),
- mysql.port(),
- mysql.user(),
- mysql.password(),
- mysql.root_password(),
- nbi_host,
- )
- log("set pod spec:\n{}".format(spec))
- pod_spec_set(spec)
- set_flag("ui-k8s.configured")
- except Exception as e:
- layer.status.blocked("k8s spec failed to deploy: {}".format(e))
-
-
-@when("mysql.available", "nbi.ready")
-@when_not("leadership.is_leader")
-def non_leaders_active():
- layer.status.active("ready")
-
-
-@when("ui-k8s.configured")
-def set_ui_active():
- layer.status.active("ready")
-
-
-def make_pod_spec(
- mysql_host, mysql_port, mysql_user, mysql_password, mysql_root_password, nbi_host
-):
- """Make pod specification for Kubernetes
-
- Args:
- mysql_name (str): UI DB name
- mysql_host (str): UI DB host
- mysql_port (int): UI DB port
- mysql_user (str): UI DB user
- mysql_password (str): UI DB password
- nbi_uri (str): NBI URI
- Returns:
- pod_spec: Pod specification for Kubernetes
- """
-
- with open("reactive/spec_template.yaml") as spec_file:
- pod_spec_template = spec_file.read()
-
- md = metadata()
- cfg = config()
-
- data = {
- "name": md.get("name"),
- "mysql_host": mysql_host,
- "mysql_port": mysql_port,
- "mysql_user": mysql_user,
- "mysql_password": mysql_password,
- "mysql_root_password": mysql_root_password,
- "nbi_host": nbi_host,
- }
- data.update(cfg)
-
- return pod_spec_template % data
-
-
-def get_ui_port():
- """Returns UI port"""
- cfg = config()
- return cfg.get("advertised-port")