Spring Cloud全解析：配置中心之springCloudConfig配置存储

配置存储

springCloudConfig是使用EnvironmentRepository来存储服务器的配置数据的，返回Environment对象

public Environment(@JsonProperty("name") String name,
			@JsonProperty("profiles") String[] profiles,
			@JsonProperty("label") String label, @JsonProperty("version") String version,
			@JsonProperty("state") String state) {
		super();
		this.name = name;
		this.profiles = profiles;
		this.label = label;
		this.version = version;
		this.state = state;
	}

基于本地文件

如果存储是基于文件的，即配置了spring.cloud.config.server.native.searchLocation，此时使用的是NativeEnvironmentRepository来查找配置

使用本地文件的前提是要配置spring.prifiles.active=native

@Configuration(proxyBeanMethods = false)
@Profile("native")
class NativeRepositoryConfiguration {

   @Bean
   public NativeEnvironmentRepository nativeEnvironmentRepository(
         NativeEnvironmentRepositoryFactory factory,
         NativeEnvironmentProperties environmentProperties) {
      return factory.build(environmentProperties);
   }

}

只有配置了spring.prifiles.active=native才会创建NativeEnvironmentRepository这个bean

基于Git

如果存储是基于git的，即配置了spring.cloud.config.server.git.uri，此时使用的是JGitEnvironmentRepository来查找配置

if (getUri().startsWith(FILE_URI_PREFIX)) {
   return copyFromLocalRepository();
}
else {
   return cloneToBasedir();
}

如果使用file:前缀来进行设置的，此时是从本地Git仓库获取的，也就不需要克隆

private Git copyFromLocalRepository() throws IOException {
   Git git;
   File remote = new UrlResource(StringUtils.cleanPath(getUri())).getFile();
   Assert.state(remote.isDirectory(), "No directory at " + getUri());
   File gitDir = new File(remote, ".git");
   Assert.state(gitDir.exists(), "No .git at " + getUri());
   Assert.state(gitDir.isDirectory(), "No .git directory at " + getUri());
   git = this.gitFactory.getGitByOpen(remote);
   return git;
}

如果不是用file前缀来进行设置的，就需要从git库去进行clone

private Git cloneToBasedir() throws GitAPIException {
   CloneCommand clone = this.gitFactory.getCloneCommandByCloneRepository()
         .setURI(getUri()).setDirectory(getBasedir());
   configureCommand(clone);
   try {
      return clone.call();
   }
   catch (GitAPIException e) {
      this.logger.warn("Error occured cloning to base directory.", e);
      deleteBaseDirIfExists();
      throw e;
   }
}

https://zhhll.icu/2023/框架/微服务/springcloud/配置中心/springCloudConfig/5.配置存储/