forked from line/armeria
-
Notifications
You must be signed in to change notification settings - Fork 7
/
AbstractCircuitBreakerClientBuilder.java
99 lines (82 loc) · 3.22 KB
/
AbstractCircuitBreakerClientBuilder.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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
/*
* Copyright 2018 LINE Corporation
*
* LINE Corporation 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:
*
* https://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.linecorp.armeria.client.circuitbreaker;
import static com.google.common.base.Preconditions.checkState;
import static java.util.Objects.requireNonNull;
import javax.annotation.Nullable;
import com.google.common.base.MoreObjects;
import com.linecorp.armeria.client.Client;
import com.linecorp.armeria.common.Response;
/**
* A skeletal builder implementation that builds a new {@link AbstractCircuitBreakerClient} or
* its decorator function.
*
* @param <O> the type of incoming {@link Response} of the {@link Client}
*/
public abstract class AbstractCircuitBreakerClientBuilder<O extends Response> {
@Nullable
private final CircuitBreakerRule rule;
@Nullable
private final CircuitBreakerRuleWithContent<O> ruleWithContent;
private CircuitBreakerMapping mapping = CircuitBreakerMapping.ofDefault();
/**
* Creates a new builder with the specified {@link CircuitBreakerRule}.
*/
AbstractCircuitBreakerClientBuilder(CircuitBreakerRule rule) {
this(requireNonNull(rule, "rule"), null);
}
/**
* Creates a new builder with the specified {@link CircuitBreakerRuleWithContent}.
*/
AbstractCircuitBreakerClientBuilder(CircuitBreakerRuleWithContent<O> ruleWithContent) {
this(null, requireNonNull(ruleWithContent, "ruleWithContent"));
}
private AbstractCircuitBreakerClientBuilder(
@Nullable CircuitBreakerRule rule,
@Nullable CircuitBreakerRuleWithContent<O> ruleWithContent) {
this.rule = rule;
this.ruleWithContent = ruleWithContent;
}
final CircuitBreakerRule rule() {
checkState(rule != null, "rule is not set.");
return rule;
}
final CircuitBreakerRuleWithContent<O> ruleWithContent() {
checkState(ruleWithContent != null, "ruleWithContent is not set.");
return ruleWithContent;
}
/**
* Sets the {@link CircuitBreakerMapping}. If unspecified, {@link CircuitBreakerMapping#ofDefault()}
* will be used.
*
* @return {@code this} to support method chaining.
*/
public AbstractCircuitBreakerClientBuilder<O> mapping(CircuitBreakerMapping mapping) {
this.mapping = requireNonNull(mapping, "mapping");
return this;
}
final CircuitBreakerMapping mapping() {
return mapping;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this).omitNullValues()
.add("rule", rule)
.add("ruleWithContent", ruleWithContent)
.add("mapping", mapping)
.toString();
}
}