1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/**
* These .proto interfaces are private and stable.
* Please see http://wiki.apache.org/hadoop/Compatibility
* for what changes are allowed for a *stable* .proto interface.
*/
syntax = "proto2";
option java_package = "org.apache.hadoop.ha.proto";
option java_outer_classname = "HAServiceProtocolProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
option go_package = "github.com/colinmarc/hdfs/v2/internal/protocol/hadoop_common";
package hadoop.common;
enum HAServiceStateProto {
INITIALIZING = 0;
ACTIVE = 1;
STANDBY = 2;
OBSERVER = 3;
}
enum HARequestSource {
REQUEST_BY_USER = 0;
REQUEST_BY_USER_FORCED = 1;
REQUEST_BY_ZKFC = 2;
}
message HAStateChangeRequestInfoProto {
required HARequestSource reqSource = 1;
}
/**
* void request
*/
message MonitorHealthRequestProto {
}
/**
* void response
*/
message MonitorHealthResponseProto {
}
/**
* void request
*/
message TransitionToActiveRequestProto {
required HAStateChangeRequestInfoProto reqInfo = 1;
}
/**
* void response
*/
message TransitionToActiveResponseProto {
}
/**
* void request
*/
message TransitionToStandbyRequestProto {
required HAStateChangeRequestInfoProto reqInfo = 1;
}
/**
* void response
*/
message TransitionToStandbyResponseProto {
}
/**
* void request
*/
message TransitionToObserverRequestProto {
required HAStateChangeRequestInfoProto reqInfo = 1;
}
/**
* void response
*/
message TransitionToObserverResponseProto {
}
/**
* void request
*/
message GetServiceStatusRequestProto {
}
/**
* Returns the state of the service
*/
message GetServiceStatusResponseProto {
required HAServiceStateProto state = 1;
// If state is STANDBY, indicate whether it is
// ready to become active.
optional bool readyToBecomeActive = 2;
// If not ready to become active, a textual explanation of why not
optional string notReadyReason = 3;
}
/**
* Protocol interface provides High availability related
* primitives to monitor and failover a service.
*
* For details see o.a.h.ha.HAServiceProtocol.
*/
service HAServiceProtocolService {
/**
* Monitor the health of a service.
*/
rpc monitorHealth(MonitorHealthRequestProto)
returns(MonitorHealthResponseProto);
/**
* Request service to tranisition to active state.
*/
rpc transitionToActive(TransitionToActiveRequestProto)
returns(TransitionToActiveResponseProto);
/**
* Request service to transition to standby state.
*/
rpc transitionToStandby(TransitionToStandbyRequestProto)
returns(TransitionToStandbyResponseProto);
/**
* Request service to transition to observer state.
*/
rpc transitionToObserver(TransitionToObserverRequestProto)
returns(TransitionToObserverResponseProto);
/**
* Get the current status of the service.
*/
rpc getServiceStatus(GetServiceStatusRequestProto)
returns(GetServiceStatusResponseProto);
}
|
