Support for placeholders in git and file URIs

The default git repository and also the native one (local files)
now support placeholders for {application}, {profile} and
{label} in the URI (searchLocation for the native repository).

Fixes gh-257

spring-cloud-config-server/src/main/java/org/springframework/cloud/config/server/environment/MultipleJGitEnvironmentRepository.java

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.config.server.environment;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.LinkedHashMap;
@@ -23,6 +24,7 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 
+import org.springframework.beans.BeanUtils;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.cloud.config.environment.Environment;
 import org.springframework.core.env.ConfigurableEnvironment;
@@ -48,6 +50,8 @@ public class MultipleJGitEnvironmentRepository extends JGitEnvironmentRepository
 
 	private Map<String, PatternMatchingJGitEnvironmentRepository> repos = new LinkedHashMap<String, PatternMatchingJGitEnvironmentRepository>();
 
+	private Map<String, JGitEnvironmentRepository> placeholders = new LinkedHashMap<String, JGitEnvironmentRepository>();
+
 	public MultipleJGitEnvironmentRepository(ConfigurableEnvironment environment) {
 		super(environment);
 	}
@@ -82,24 +86,72 @@ public class MultipleJGitEnvironmentRepository extends JGitEnvironmentRepository
 	@Override
 	public Locations getLocations(String application, String profile, String label) {
 		for (PatternMatchingJGitEnvironmentRepository repository : this.repos.values()) {
-			Environment source = repository.findOne(application, profile, label);
-			if (source != null) {
-				return repository.getLocations(application, profile, label);
+			if (repository.matches(application, profile, label)) {
+				JGitEnvironmentRepository candidate = getRepository(repository,
+						application, profile, label);
+				Environment source = candidate.findOne(application, profile, label);
+				if (source != null) {
+					return repository.getLocations(application, profile, label);
+				}
 			}
 		}
-		return super.getLocations(application, profile, label);
+		JGitEnvironmentRepository candidate = getRepository(this,
+				application, profile, label);
+		if (candidate==this) {
+			return super.getLocations(application, profile, label);
+		}
+		return candidate.getLocations(application, profile, label);
 	}
 
 	@Override
 	public Environment findOne(String application, String profile, String label) {
 		for (PatternMatchingJGitEnvironmentRepository repository : this.repos.values()) {
-			Environment source = repository.findOne(application, profile, label);
-			if (source != null) {
-				return source;
+			if (repository.matches(application, profile, label)) {
+				JGitEnvironmentRepository candidate = getRepository(repository,
+						application, profile, label);
+				Environment source = candidate.findOne(application, profile, label);
+				if (source != null) {
+					return source;
+				}
 			}
 		}
+		JGitEnvironmentRepository candidate = getRepository(this,
+				application, profile, label);
+		if (candidate==this) {
+			return super.findOne(application, profile, label);
+		}
+		return candidate.findOne(application, profile, label);
+	}
 
-		return super.findOne(application, profile, label);
+	private JGitEnvironmentRepository getRepository(JGitEnvironmentRepository repository,
+			String application, String profile, String label) {
+		if (!repository.getUri().contains("{")) {
+			return repository;
+		}
+		String key = repository.getUri();
+		if (application!=null) {
+			key = key.replace("{application}", application);
+		}
+		if (profile!=null) {
+			key = key.replace("{profile}", profile);
+		}
+		if (label!=null) {
+			key = key.replace("{label}", label);
+		}
+		if (!this.repos.containsKey(key)) {
+			this.placeholders.put(key, getRepository(repository, key));
+		}
+		return this.placeholders.get(key);
+	}
+
+	private JGitEnvironmentRepository getRepository(JGitEnvironmentRepository source,
+			String uri) {
+		JGitEnvironmentRepository repository = new JGitEnvironmentRepository(null);
+		File basedir = repository.getBasedir();
+		BeanUtils.copyProperties(source, repository);
+		repository.setUri(uri);
+		repository.setBasedir(basedir);
+		return repository;
 	}
 
 	public static class PatternMatchingJGitEnvironmentRepository
@@ -117,6 +169,18 @@ public class MultipleJGitEnvironmentRepository extends JGitEnvironmentRepository
 			setUri(uri);
 		}
 
+		public boolean matches(String application, String profile, String label) {
+			if (this.pattern == null || this.pattern.length == 0) {
+				return false;
+			}
+
+			if (PatternMatchUtils.simpleMatch(this.pattern,
+					application + "/" + profile)) {
+				return true;
+			}
+			return false;
+		}
+
 		@Override
 		public Environment findOne(String application, String profile, String label) {
 

spring-cloud-config-server/src/main/java/org/springframework/cloud/config/server/environment/NativeEnvironmentRepository.java

@@ -98,7 +98,7 @@ public class NativeEnvironmentRepository
 		ConfigurableEnvironment environment = getEnvironment(profile);
 		builder.environment(environment);
 		builder.web(false).bannerMode(Mode.OFF);
-		String[] args = getArgs(config, label);
+		String[] args = getArgs(config, profile, label);
 		// Explicitly set the listeners (to exclude logging listener which would change
 		// log levels in the caller)
 		builder.application()
@@ -122,7 +122,22 @@ public class NativeEnvironmentRepository
 		}
 		List<String> output = new ArrayList<String>();
 		for (String location : locations) {
-			output.add(location);
+			String value = location;
+			if (application != null) {
+				value = value.replace("{application}", application);
+			}
+			if (profile != null) {
+				value = value.replace("{profile}", profile);
+			}
+			if (label != null) {
+				value = value.replace("{label}", label);
+			}
+			if (!value.endsWith("/")) {
+				value = value + "/";
+			}
+			if (isDirectory(value)) {
+				output.add(value);
+			}
 		}
 		for (String location : locations) {
 			if (isDirectory(location) && StringUtils.hasText(label)) {
@@ -160,7 +175,8 @@ public class NativeEnvironmentRepository
 							.cleanPath(new File(normal.substring("file:".length()))
 									.getAbsolutePath());
 				}
-				for (String pattern : getLocations(null, null, result.getLabel())
+				String profile = result.getProfiles() == null ? null : StringUtils.arrayToCommaDelimitedString(result.getProfiles());
+				for (String pattern : getLocations(result.getName(), profile, result.getLabel())
 						.getLocations()) {
 					if (!pattern.contains(":")) {
 						pattern = "file:" + pattern;
@@ -195,8 +211,9 @@ public class NativeEnvironmentRepository
 		return result;
 	}
 
-	private String[] getArgs(String config, String label) {
+	private String[] getArgs(String application, String profile, String label) {
 		List<String> list = new ArrayList<String>();
+		String config = application;
 		if (!config.startsWith("application")) {
 			config = "application," + config;
 		}
@@ -204,7 +221,7 @@ public class NativeEnvironmentRepository
 		list.add("--spring.cloud.bootstrap.enabled=false");
 		list.add("--encrypt.failOnError=" + this.failOnError);
 		list.add("--spring.config.location=" + StringUtils.arrayToCommaDelimitedString(
-				getLocations(null, null, label).getLocations()));
+				getLocations(application, profile, label).getLocations()));
 		return list.toArray(new String[0]);
 	}
 
@@ -234,8 +251,8 @@ public class NativeEnvironmentRepository
 	}
 
 	private boolean isDirectory(String location) {
-		return !location.endsWith(".properties") && !location.endsWith(".yml")
-				&& !location.endsWith(".yaml");
+		return !location.contains("{") && !location.endsWith(".properties")
+				&& !location.endsWith(".yml") && !location.endsWith(".yaml");
 	}
 
 }

spring-cloud-config-server/src/test/java/org/springframework/cloud/config/server/environment/JGitEnvironmentRepositoryIntegrationTests.java

@@ -56,7 +56,7 @@ public class JGitEnvironmentRepositoryIntegrationTests {
 		if (this.basedir.exists()) {
 			FileUtils.delete(this.basedir, FileUtils.RECURSIVE);
 		}
-		ConfigServerTestUtils.deleteLocalRepo("config-copy");
+		ConfigServerTestUtils.deleteLocalRepo("");
 	}
 
 	@After

spring-cloud-config-server/src/test/java/org/springframework/cloud/config/server/environment/MultipleJGitEnvironmentUriTemplateRepositoryTests.java

@@ -0,0 +1,126 @@
+/*
+ * Copyright 2013-2015 the original author or authors.
+ *
+ * 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 org.springframework.cloud.config.server.environment;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.cloud.config.environment.Environment;
+import org.springframework.cloud.config.server.environment.MultipleJGitEnvironmentRepository.PatternMatchingJGitEnvironmentRepository;
+import org.springframework.cloud.config.server.test.ConfigServerTestUtils;
+import org.springframework.core.env.StandardEnvironment;
+
+/**
+ * @author Dave Syer
+ *
+ */
+public class MultipleJGitEnvironmentUriTemplateRepositoryTests {
+
+	private StandardEnvironment environment = new StandardEnvironment();
+	private MultipleJGitEnvironmentRepository repository = new MultipleJGitEnvironmentRepository(
+			this.environment);
+
+	@Before
+	public void init() throws Exception {
+		String defaultUri = ConfigServerTestUtils.prepareLocalRepo("config-repo");
+		this.repository.setUri(defaultUri);
+		this.repository.setRepos(createRepositories());
+	}
+
+	private Map<String, PatternMatchingJGitEnvironmentRepository> createRepositories()
+			throws Exception {
+		String test1Uri = ConfigServerTestUtils.prepareLocalRepo("test1-config-repo");
+		ConfigServerTestUtils.prepareLocalRepo("test2-config-repo");
+
+		Map<String, PatternMatchingJGitEnvironmentRepository> repos = new HashMap<>();
+		repos.put("templates", createRepository("test", "*-config-repo",
+				test1Uri.replace("test1-config-repo", "{application}")));
+		return repos;
+	}
+
+	private PatternMatchingJGitEnvironmentRepository createRepository(String name,
+			String pattern, String uri) {
+		PatternMatchingJGitEnvironmentRepository repo = new PatternMatchingJGitEnvironmentRepository();
+		repo.setEnvironment(this.environment);
+		repo.setName(name);
+		repo.setPattern(new String[] { pattern });
+		repo.setUri(uri);
+		return repo;
+	}
+
+	@Test
+	public void defaultRepo() {
+		Environment environment = this.repository.findOne("bar", "staging", "master");
+		assertEquals(2, environment.getPropertySources().size());
+		assertEquals(this.repository.getUri() + "/bar.properties",
+				environment.getPropertySources().get(0).getName());
+		assertVersion(environment);
+	}
+
+	@Test
+	public void mappingRepo() {
+		Environment environment = this.repository.findOne("test1-config-repo", "staging",
+				"master");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals(
+				getUri("*").replace("{application}", "test1-config-repo")
+						+ "/application.yml",
+				environment.getPropertySources().get(0).getName());
+		assertVersion(environment);
+	}
+
+	@Test
+	public void otherMappingRepo() {
+		Environment environment = this.repository.findOne("test2-config-repo", "staging",
+				"master");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals(
+				getUri("*").replace("{application}", "test2-config-repo")
+						+ "/application.properties",
+				environment.getPropertySources().get(0).getName());
+		assertVersion(environment);
+	}
+
+	private void assertVersion(Environment environment) {
+		String version = environment.getVersion();
+		assertNotNull("version was null", version);
+		assertTrue("version length was wrong",
+				version.length() >= 40 && version.length() <= 64);
+	}
+
+	private String getUri(String pattern) {
+		String uri = null;
+
+		Map<String, PatternMatchingJGitEnvironmentRepository> repoMappings = this.repository
+				.getRepos();
+
+		for (PatternMatchingJGitEnvironmentRepository repo : repoMappings.values()) {
+			String[] mappingPattern = repo.getPattern();
+			if (mappingPattern != null && mappingPattern.length != 0) {
+				uri = repo.getUri();
+				break;
+			}
+		}
+
+		return uri;
+	}
+}

spring-cloud-config-server/src/test/java/org/springframework/cloud/config/server/environment/NativeEnvironmentRepositoryTests.java

@@ -21,6 +21,7 @@ import org.junit.Before;
 import org.junit.Test;
 import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.cloud.config.environment.Environment;
+import org.springframework.cloud.config.server.environment.SearchPathLocator.Locations;
 import org.springframework.context.ConfigurableApplicationContext;
 
 /**
@@ -43,7 +44,7 @@ public class NativeEnvironmentRepositoryTests {
 
 	@Test
 	public void emptySearchLocations() {
-		this.repository.setSearchLocations((String[])null);
+		this.repository.setSearchLocations((String[]) null);
 		Environment environment = this.repository.findOne("foo", "development", "master");
 		assertEquals(2, environment.getPropertySources().size());
 	}
@@ -91,4 +92,48 @@ public class NativeEnvironmentRepositoryTests {
 		assertEquals("version was wrong", "myversion", environment.getVersion());
 	}
 
+	@Test
+	public void placeholdersLabel() {
+		this.repository.setSearchLocations("classpath:/test/{label}/");
+		Environment environment = this.repository.findOne("foo", "development", "dev");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals("dev_bar",
+				environment.getPropertySources().get(0).getSource().get("foo"));
+	}
+
+	@Test
+	public void placeholdersProfile() {
+		this.repository.setSearchLocations("classpath:/test/{profile}/");
+		Environment environment = this.repository.findOne("foo", "dev", "master");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals("dev_bar",
+				environment.getPropertySources().get(0).getSource().get("foo"));
+	}
+
+	@Test
+	public void placeholdersApplicationAndProfile() {
+		this.repository.setSearchLocations("classpath:/test/{profile}/{application}/");
+		Environment environment = this.repository.findOne("app", "dev", "master");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals("app",
+				environment.getPropertySources().get(0).getSource().get("foo"));
+	}
+
+	@Test
+	public void locationPlaceholdersApplication() {
+		this.repository.setSearchLocations("classpath:/test/{application}");
+		Locations locations = this.repository.getLocations("foo", "dev", "master");
+		assertEquals(1, locations.getLocations().length);
+		assertEquals("classpath:/test/foo/", locations.getLocations()[0]);
+	}
+
+	@Test
+	public void placeholdersNoTrailingSlash() {
+		this.repository.setSearchLocations("classpath:/test/{label}");
+		Environment environment = this.repository.findOne("foo", "development", "dev");
+		assertEquals(1, environment.getPropertySources().size());
+		assertEquals("dev_bar",
+				environment.getPropertySources().get(0).getSource().get("foo"));
+	}
+
 }

spring-cloud-config-server/src/test/resources/test/dev/app/application.properties

@@ -0,0 +1 @@
+foo: app

spring-cloud-config-server/src/test/resources/test2-config-repo/application.properties

@@ -0,0 +1 @@
+foo: foo

spring-cloud-config-server/src/test/resources/test2-config-repo/bar.properties

@@ -0,0 +1 @@
+foo: bar

spring-cloud-config-server/src/test/resources/test2-config-repo/git/COMMIT_EDITMSG

@@ -0,0 +1,8 @@
+Add application.properties
+# Please enter the commit message for your changes. Lines starting
+# with '#' will be ignored, and an empty message aborts the commit.
+# On branch master
+# Changes to be committed:
+#	new file:   application.properties
+#	deleted:    application.yml
+#

spring-cloud-config-server/src/test/resources/test2-config-repo/git/FETCH_HEAD

@@ -0,0 +1,2 @@
+7df4a26d5437d9d4090cd5809967f870444cde8f	not-for-merge	branch 'raw' of dsyer@localhost:/home/dsyer/dev/platform/config/spring-platform-config-server/target/test-classes/config-repo
+7df4a26d5437d9d4090cd5809967f870444cde8f	not-for-merge	tag 'foo' of dsyer@localhost:/home/dsyer/dev/platform/config/spring-platform-config-server/target/test-classes/config-repo

spring-cloud-config-server/src/test/resources/test2-config-repo/git/HEAD

@@ -0,0 +1 @@
+ref: refs/heads/master

spring-cloud-config-server/src/test/resources/test2-config-repo/git/ORIG_HEAD

@@ -0,0 +1 @@
+dfd1f2f006c9ea71be688e3eeaf383ff640fd21a

spring-cloud-config-server/src/test/resources/test2-config-repo/git/config

@@ -0,0 +1,5 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	logallrefupdates = true
+[branch "raw"]

spring-cloud-config-server/src/test/resources/test2-config-repo/git/gitk.cache

@@ -0,0 +1,3 @@
+1 1
+7df4a26d5437d9d4090cd5809967f870444cde8f 9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0 9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0
+1

spring-cloud-config-server/src/test/resources/test2-config-repo/git/logs/HEAD

@@ -0,0 +1,8 @@
+0000000000000000000000000000000000000000 7df4a26d5437d9d4090cd5809967f870444cde8f Dave Syer <dsyer@gopivotal.com> 1406860717 -0700	
+7df4a26d5437d9d4090cd5809967f870444cde8f 9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0 Dave Syer <dsyer@pivotal.io> 1415902155 +0000	checkout: moving from raw to master
+9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0 c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 Dave Syer <dsyer@pivotal.io> 1415902338 +0000	commit: Move application.yml to subdir
+c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 dfd1f2f006c9ea71be688e3eeaf383ff640fd21a Dave Syer <dsyer@pivotal.io> 1449047214 +0000	commit: Fix
+dfd1f2f006c9ea71be688e3eeaf383ff640fd21a c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 Dave Syer <dsyer@pivotal.io> 1449047236 +0000	rebase -i (start): checkout 9f01f
+c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 dfe21d586fc45ba72db173421c5139e26e50a7af Dave Syer <dsyer@pivotal.io> 1449047236 +0000	rebase -i (squash): Move application.yml to subdir
+dfe21d586fc45ba72db173421c5139e26e50a7af dfe21d586fc45ba72db173421c5139e26e50a7af Dave Syer <dsyer@pivotal.io> 1449047243 +0000	rebase -i (finish): returning to refs/heads/master
+dfe21d586fc45ba72db173421c5139e26e50a7af 29f2b1020f4b87e1de6aab368ff496cc4e99a959 Dave Syer <dsyer@pivotal.io> 1449047248 +0000	commit (amend): Add application.properties

spring-cloud-config-server/src/test/resources/test2-config-repo/git/logs/refs/heads/master

@@ -0,0 +1,5 @@
+0000000000000000000000000000000000000000 9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0 Dave Syer <dsyer@gopivotal.com> 1406860776 -0700	branch: Created from 9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0
+9f01fb972bc9617e4ea59f5c8ee3ceb5ff515cd0 c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 Dave Syer <dsyer@pivotal.io> 1415902338 +0000	commit: Move application.yml to subdir
+c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4 dfd1f2f006c9ea71be688e3eeaf383ff640fd21a Dave Syer <dsyer@pivotal.io> 1449047214 +0000	commit: Fix
+dfd1f2f006c9ea71be688e3eeaf383ff640fd21a dfe21d586fc45ba72db173421c5139e26e50a7af Dave Syer <dsyer@pivotal.io> 1449047243 +0000	rebase -i (finish): refs/heads/master onto c4bd92016dc14b9fe376d9c3f7af1c9d22d44ee4
+dfe21d586fc45ba72db173421c5139e26e50a7af 29f2b1020f4b87e1de6aab368ff496cc4e99a959 Dave Syer <dsyer@pivotal.io> 1449047248 +0000	commit (amend): Add application.properties

spring-cloud-config-server/src/test/resources/test2-config-repo/git/logs/refs/heads/raw

@@ -0,0 +1 @@
+0000000000000000000000000000000000000000 7df4a26d5437d9d4090cd5809967f870444cde8f Dave Syer <dsyer@gopivotal.com> 1406860717 -0700	

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spring-cloud-config-server/src/test/resources/test2-config-repo/git/refs/heads/master

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spring-cloud-config-server/src/test/resources/test2-config-repo/git/refs/heads/raw

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spring-cloud-config-server/src/test/resources/test2-config-repo/git/refs/tags/foo

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