forked from spotify/helios
-
Notifications
You must be signed in to change notification settings - Fork 0
/
VersionResource.java
78 lines (69 loc) · 2.5 KB
/
VersionResource.java
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
/*
* Copyright (c) 2014 Spotify AB.
*
* 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.
*/
package com.spotify.helios.master.resources;
import com.spotify.helios.common.PomVersion;
import com.spotify.helios.common.Version;
import com.spotify.helios.common.VersionCheckResponse;
import com.spotify.helios.common.VersionCompatibility;
import com.codahale.metrics.annotation.ExceptionMetered;
import com.codahale.metrics.annotation.Timed;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import static com.google.common.base.Strings.isNullOrEmpty;
import static javax.ws.rs.core.MediaType.APPLICATION_JSON;
import static javax.ws.rs.core.MediaType.TEXT_PLAIN;
@Path("version")
public class VersionResource {
/**
* Returns the server version string.
* @return The server version.
*/
@GET
@Produces(TEXT_PLAIN)
@Timed
@ExceptionMetered
public String version() {
// wrap in double quotes to make valid json
return String.format("\"%s\"", Version.POM_VERSION);
}
/**
* Given the client version, returns the version status, i.e. whether or not they should be
* compatible or not.
* @param client The client version.
* @return The VersionCheckResponse object.
*/
@GET
@Path("/check")
@Produces(APPLICATION_JSON)
@Timed
@ExceptionMetered
public VersionCheckResponse versionCheck(
@QueryParam("client") @DefaultValue("") final String client) {
final PomVersion serverVersion = PomVersion.parse(Version.POM_VERSION);
final VersionCompatibility.Status status;
if (isNullOrEmpty(client)) {
return new VersionCheckResponse(VersionCompatibility.Status.MISSING,
serverVersion, Version.RECOMMENDED_VERSION);
}
final PomVersion clientVersion = PomVersion.parse(client);
status = VersionCompatibility.getStatus(serverVersion, clientVersion);
return new VersionCheckResponse(status, serverVersion, Version.RECOMMENDED_VERSION);
}
}