01 /*
02 * Copyright 2008-2015 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.griffon.runtime.core.env;
17
18 import griffon.core.env.Environment;
19 import griffon.core.env.Metadata;
20
21 import javax.inject.Inject;
22 import javax.inject.Provider;
23
24 /**
25 * @author Andres Almiray
26 * @since 2.2.0
27 */
28 public class EnvironmentProvider implements Provider<Environment> {
29 @Inject
30 private Metadata metadata;
31
32 private static boolean isBlank(String value) {
33 return value == null || value.trim().length() == 0;
34 }
35
36 @Override
37 public Environment get() {
38 String envName = System.getProperty(Environment.KEY);
39 if (metadata != null && isBlank(envName)) {
40 envName = metadata.getEnvironment();
41 }
42
43 if (isBlank(envName)) {
44 return Environment.DEVELOPMENT;
45 }
46
47 Environment env = Environment.resolveEnvironment(envName);
48 if (env == null) {
49 try {
50 env = Environment.valueOf(envName.toUpperCase());
51 } catch (IllegalArgumentException e) {
52 // ignore
53 }
54 }
55 if (env == null) {
56 env = Environment.CUSTOM;
57 env.setName(envName);
58 }
59 return env;
60 }
61 }
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