forked from rook/rook
111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Some of the code below came from https://github.com/coreos/etcd-operator
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which also has the apache 2.0 license.
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*/
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package operator
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import (
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"encoding/json"
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"fmt"
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"io"
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"github.com/rook/rook/pkg/operator/cluster"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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kwatch "k8s.io/apimachinery/pkg/watch"
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)
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type clusterEvent struct {
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Type kwatch.EventType
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Object *cluster.Cluster
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}
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type poolEvent struct {
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Type kwatch.EventType
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Object *cluster.Pool
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}
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type rawEvent struct {
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Type kwatch.EventType
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Object json.RawMessage
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}
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func pollClusterEvent(decoder *json.Decoder) (*clusterEvent, *metav1.Status, error) {
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re, status, err := pollEvent(decoder)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to poll cluster event. %+v", err)
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}
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if status != nil {
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return nil, status, nil
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}
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ev := &clusterEvent{
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Type: re.Type,
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Object: &cluster.Cluster{},
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}
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err = json.Unmarshal(re.Object, ev.Object)
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if err != nil {
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return nil, nil, fmt.Errorf("fail to unmarshal Cluster object from data (%s): %v", re.Object, err)
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}
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return ev, status, nil
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}
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func pollPoolEvent(decoder *json.Decoder) (*poolEvent, *metav1.Status, error) {
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re, status, err := pollEvent(decoder)
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if err != nil {
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return nil, status, fmt.Errorf("failed to poll pool event. %+v", err)
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}
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if status != nil {
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return nil, status, nil
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}
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ev := &poolEvent{
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Type: re.Type,
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Object: &cluster.Pool{},
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}
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err = json.Unmarshal(re.Object, ev.Object)
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if err != nil {
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return nil, nil, fmt.Errorf("fail to unmarshal Pool object from data (%s): %v", re.Object, err)
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}
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return ev, nil, nil
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}
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func pollEvent(decoder *json.Decoder) (*rawEvent, *metav1.Status, error) {
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re := &rawEvent{}
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err := decoder.Decode(re)
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if err != nil {
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if err == io.EOF {
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return nil, nil, err
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}
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return nil, nil, fmt.Errorf("fail to decode raw event from apiserver (%v)", err)
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}
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if re.Type == kwatch.Error {
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status := &metav1.Status{}
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err = json.Unmarshal(re.Object, status)
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if err != nil {
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return nil, nil, fmt.Errorf("fail to decode (%s) into metav1.Status (%v)", re.Object, err)
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}
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logger.Infof("returning pollEvent status %+v", status)
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return nil, status, nil
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}
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return re, nil, nil
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}
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