-
Notifications
You must be signed in to change notification settings - Fork 4.9k
/
RestOpenApiProcessor.java
115 lines (100 loc) · 4.36 KB
/
RestOpenApiProcessor.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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
/*
* 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.
*/
package org.apache.camel.openapi;
import java.util.Collections;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.RejectedExecutionException;
import org.apache.camel.CamelContext;
import org.apache.camel.CamelContextAware;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.StartupStep;
import org.apache.camel.spi.RestConfiguration;
import org.apache.camel.spi.StartupStepRecorder;
import org.apache.camel.support.service.ServiceSupport;
import org.apache.camel.util.ObjectHelper;
public class RestOpenApiProcessor extends ServiceSupport implements Processor, CamelContextAware {
private final RestApiResponseAdapter jsonAdapter = new DefaultRestApiResponseAdapter();
private final RestApiResponseAdapter yamlAdapter = new DefaultRestApiResponseAdapter();
private CamelContext camelContext;
private final BeanConfig openApiConfig;
private final RestOpenApiSupport support;
private final RestConfiguration configuration;
public RestOpenApiProcessor(Map<String, Object> parameters,
RestConfiguration configuration) {
this.configuration = configuration;
this.support = new RestOpenApiSupport();
this.openApiConfig = new BeanConfig();
if (parameters == null) {
parameters = Collections.emptyMap();
}
support.initOpenApi(openApiConfig, parameters);
}
@Override
public CamelContext getCamelContext() {
return camelContext;
}
@Override
public void setCamelContext(CamelContext camelContext) {
this.camelContext = camelContext;
}
@Override
protected void doInit() throws Exception {
ObjectHelper.notNull(camelContext, "CamelContext", this);
StartupStepRecorder recorder = camelContext.getCamelContextExtension().getStartupStepRecorder();
StartupStep step = recorder.beginStep(RestOpenApiProcessor.class, "openapi", "Generating OpenAPI specification");
try {
support.renderResourceListing(camelContext, jsonAdapter, openApiConfig, true,
camelContext.getClassResolver(), configuration);
yamlAdapter.setOpenApi(jsonAdapter.getOpenApi()); // no need to compute OpenApi again
support.renderResourceListing(camelContext, yamlAdapter, openApiConfig, false,
camelContext.getClassResolver(), configuration);
} finally {
recorder.endStep(step);
}
}
@Override
public void process(Exchange exchange) throws Exception {
if (!isRunAllowed()) {
throw new RejectedExecutionException();
}
String route = exchange.getIn().getHeader(Exchange.HTTP_PATH, String.class);
String accept = exchange.getIn().getHeader("Accept", String.class);
// whether to use json or yaml
boolean json = false;
boolean yaml = false;
if (route != null && route.endsWith(".json")) {
json = true;
} else if (route != null && route.endsWith(".yaml")) {
yaml = true;
}
if (accept != null && !json && !yaml) {
json = accept.toLowerCase(Locale.US).contains("json");
yaml = accept.toLowerCase(Locale.US).contains("yaml");
}
if (!json && !yaml) {
// json is default
json = true;
}
RestApiResponseAdapter adapter = json ? jsonAdapter : yamlAdapter;
if (configuration.isUseXForwardHeaders()) {
support.setupXForwardHeaders(adapter, exchange);
}
adapter.copyResult(exchange);
}
}