使用Google.Apis.Firestore.v1创建默认Cloud Firestore数据库遇格式错误求助

使用Google.Apis.Firestore.v1库为Firebase项目创建Cloud Firestore数据库时，遇到数据库命名错误，提示database_id should be 4-63 characters, and valid characters are /[a-z][0-9]-/。相关代码和错误信息如下：

代码示例 #

using Google.Apis.Firestore.v1;

private static FirestoreService _firestoreService;
public static void IntializeFirestoreAdmin() {
   GoogleCredential credential = GoogleCredential.GetApplicationDefault();
   if (CloudManager.Credential.IsCreateScopedRequired)
   {
       credential = CloudManager.Credential.CreateScoped(FirestoreService.Scope.CloudPlatform);
   }
   _firestoreService = new FirestoreService(
        new BaseClientService.Initializer()
        {                 
           HttpClientInitializer = credential,
           ApplicationName = CloudManager.ApplicationName
        });          
}
public static void AddCloudFirestore() {
   IntializeFirestoreAdmin();
   var mydata = new GoogleFirestoreAdminV1Database {
            LocationId = "nam5",
            Type = "FIRESTORE_NATIVE",
            Name = "projects/" + CloudManager.ProjectId + "/databases/(default)",
            
        };
   _firestoreService.Projects.Databases.Create(mydata, "projects/" + CloudManager.ProjectId).Execute();
}

错误信息 #

Unhandled exception. The service firestore has thrown an exception.
HttpStatusCode is BadRequest.
Google.Apis.Requests.RequestError
database_id should be 4-63 characters, and valid characters are /[a-z][0-9]-/ [400]
Errors [
    Message[database_id should be 4-63 characters, and valid characters are /[a-z][0-9]-/] Location[ - ] Reason[badRequest] Domain[global]
]

Google.GoogleApiException: The service firestore has thrown an exception. HttpStatusCode is BadRequest. database_id should be 4-63 characters, and valid characters are /[a-z][0-9]-/
   at Google.Apis.Requests.ClientServiceRequest`1.ParseResponse(HttpResponseMessage response)
   at Google.Apis.Requests.ClientServiceRequest`1.Execute()

问题原因 #

你手动设置了Name字段为包含(default)的路径，导致API解析出的数据库ID为(default)，但该ID包含括号()，不符合Cloud Firestore数据库ID的规则（仅允许小写字母、数字、连字符，长度4-63字符）。同时，Name字段是由服务器自动生成的资源完整路径，客户端无需手动指定。

解决方法 #

根据你的需求选择以下两种方式：

1. 创建自定义数据库

指定一个符合规则的数据库ID（小写字母、数字、连字符组合，长度4-63字符），设置DatabaseId字段而非Name字段：

public static void AddCloudFirestore() {
   IntializeFirestoreAdmin();
   var mydata = new GoogleFirestoreAdminV1Database {
            LocationId = "nam5",
            Type = "FIRESTORE_NATIVE",
            DatabaseId = "my-custom-db-01" // 替换为符合规则的自定义ID
        };
   _firestoreService.Projects.Databases.Create(mydata, "projects/" + CloudManager.ProjectId).Execute();
}

2. 创建默认数据库

如果你需要创建默认数据库（ID为(default)），无需设置Name或DatabaseId字段，API会自动处理：

public static void AddCloudFirestore() {
   IntializeFirestoreAdmin();
   var mydata = new GoogleFirestoreAdminV1Database {
            LocationId = "nam5",
            Type = "FIRESTORE_NATIVE"
            // 不设置Name和DatabaseId，自动创建默认数据库
        };
   _firestoreService.Projects.Databases.Create(mydata, "projects/" + CloudManager.ProjectId).Execute();
}

内容的提问来源于stack exchange，提问作者Samaritan