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我正在尝试使用资源令牌连接到 Azure Cosmos DB 中的 Gremlin 集合。我从这里改编了文档（主要用于 C#）：https ://docs.microsoft.com/en-us/azure/cosmos-db/how-to-use-resource-tokens-gremlin

问题是，一旦我尝试访问数据，令牌的日期标头似乎无效：

Exception in thread "main" java.util.concurrent.CompletionException: org.apache.tinkerpop.gremlin.driver.exception.ResponseException: 

ActivityId : 00000000-0000-0000-0000-000000000000
ExceptionType : UnauthorizedException
ExceptionMessage :
    The input date header is invalid format. Please pass in RFC 1123 style date format.
    ActivityId: 755ab024-fc79-47a3-bc44-3231b2db7dc1, documentdb-dotnet-sdk/2.7.0 Host/64-bit MicrosoftWindowsNT/6.2.9200.0
Source : Microsoft.Azure.Documents.ClientThe input date header is invalid format. Please pass in RFC 1123 style date format.
ActivityId: 755ab024-fc79-47a3-bc44-3231b2db7dc1, documentdb-dotnet-sdk/2.7.0 Host/64-bit MicrosoftWindowsNT/6.2.9200.0
    BackendStatusCode : Unauthorized
    BackendActivityId : 755ab024-fc79-47a3-bc44-3231b2db7dc1
    HResult : 0x80131500

任何人都知道如何解决这个问题？JVM 设置为 GMT 通过-Duser.timezone=GMT

这是代码。请注意，它是一个 Java CLI 应用程序，仅用于测试连接性。的所有数据cfg基本上都是由cli给出的，方法名称应该是不言自明的。

令牌生成，这是使用DocumentClient实例的主密钥：

...
import com.microsoft.azure.documentdb.DocumentClient;
import com.microsoft.azure.documentdb.DocumentClientException;
import com.microsoft.azure.documentdb.FeedResponse;
import com.microsoft.azure.documentdb.Permission;
import com.microsoft.azure.documentdb.PermissionMode;
import com.microsoft.azure.documentdb.ResourceResponse;
import com.microsoft.azure.documentdb.User;
...

public class TokenGenerator {

    private String USER_ID = "demo-1";

    public String generateToken(CmdLineConfiguration cfg) throws DocumentClientException {
        try (DocumentClient client = Utilities.documentClientFrom(cfg)) {
            String databaseLink = String.format("/dbs/%s", cfg.getDatabaseId());
            String collectionLink = String.format("/dbs/%s/colls/%s", cfg.getDatabaseId(), cfg.getCollectionId());

            // get all users within database
            FeedResponse<User> queryResults = client.readUsers(databaseLink, null);
            List<User> onlineUsers = queryResults.getQueryIterable().toList();

            // if a user exists, grab the first one, if not create it
            User user;
            Optional<User> onlineUser = onlineUsers.stream().filter(u -> u.getId().equals(USER_ID)).findFirst();
            if (onlineUser.isPresent()) {
                user = onlineUser.get();
            } else {
                User u = new User();
                u.setId(USER_ID);
                ResourceResponse<User> generatedUser = client.createUser(databaseLink, u, null);
                user = generatedUser.getResource();
            }

            // read permissions, if existent use, else create
            FeedResponse<Permission> permissionResponse = client.readPermissions(user.getSelfLink(), null);
            List<Permission> onlinePermissions = permissionResponse.getQueryIterable().toList();
            Permission permission;
            if (onlinePermissions.size() == 0) {
                Permission p = new Permission();
                p.setPermissionMode(PermissionMode.Read);
                p.setId(USER_ID + "_READ");
                p.setResourceLink(collectionLink);
                ResourceResponse<Permission> generatedPermission = client.createPermission(user.getSelfLink(), p, null);
                permission = generatedPermission.getResource();
            } else {
                permission = onlinePermissions.get(0);
            }
            // return the token
            return permission.getToken();
        }
    }
}

连接和查询 Gremlin：

...
import org.apache.tinkerpop.gremlin.driver.AuthProperties;
import org.apache.tinkerpop.gremlin.driver.AuthProperties.Property;
import org.apache.tinkerpop.gremlin.driver.Client;
import org.apache.tinkerpop.gremlin.driver.Cluster;
import org.apache.tinkerpop.gremlin.driver.ResultSet;
...


        Cluster cluster;
        String collectionLink = String.format("/dbs/%s/colls/%s", cfg.getDatabaseId(), cfg.getCollectionId());
        TokenGenerator tg = new TokenGenerator();
        String token = tg.generateToken(cfg);

        Cluster.Builder builder = Cluster.build(new File("src/remote.yaml"));
        AuthProperties authenticationProperties = new AuthProperties();
        authenticationProperties.with(AuthProperties.Property.USERNAME, collectionLink);

        authenticationProperties.with(Property.PASSWORD, token);
        builder.authProperties(authenticationProperties);
        cluster = builder.create();

        Client client = cluster.connect();
        ResultSet results = client.submit("g.V().limit(1)");

        // the following call fails
        results.stream().forEach(System.out::println);

        client.close();
        cluster.close();
    }

src/remote.yml

hosts: [COSMOSNAME.gremlin.cosmosdb.azure.com]
port: 443
username: /dbs/DBNAME/colls/COLLECTIONNAME
connectionPool: { enableSsl: true}
serializer: { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV2d0, config: { serializeResultToString: true }}
4

2 回答 2

0

我无法在我这边重现您的问题。我试图为 java 扩展这个cosmos 图形演示。在那个演示中，使用了主密钥，所以我按照你的部分代码和官方示例来访问带有资源令牌的图形数据库。

您与 db 的连接代码似乎有效。我的主要课程如下，与您的类似：

import org.apache.tinkerpop.gremlin.driver.*;
import org.apache.tinkerpop.gremlin.driver.exception.ResponseException;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;


public class Program
{
        static final String gremlinQueries[] = new String[] {"g.V().limit(1)"};

  public static void main( String[] args ) throws ExecutionException, InterruptedException {

        String token = "***";
        Cluster cluster;
        Client client;

        try {
            Cluster.Builder builder = Cluster.build(new File("src/remote.yaml"));
//            Cluster.Builder builder = Cluster.build();
            AuthProperties authenticationProperties = new AuthProperties();
            authenticationProperties.with(AuthProperties.Property.USERNAME,
                    String.format("/dbs/%s/colls/%s", "db", "coll"));

// The format of the token is "type=resource&ver=1&sig=<base64 string>;<base64 string>;".
            authenticationProperties.with(AuthProperties.Property.PASSWORD, token);

            builder.authProperties(authenticationProperties);

            // Attempt to create the connection objects
            cluster = builder.create();
//            cluster = Cluster.build(new File("src/remote.yaml")).create();
            client = cluster.connect();
        } catch (Exception e) {
            // Handle file errors.
            System.out.println("Couldn't find the configuration file.");
            e.printStackTrace();
            return;
        }

        // After connection is successful, run all the queries against the server.
        for (String query : gremlinQueries) {
            System.out.println("\nSubmitting this Gremlin query: " + query);

            // Submitting remote query to the server.
            ResultSet results = client.submit(query);

            CompletableFuture<List<Result>> completableFutureResults;
            CompletableFuture<Map<String, Object>> completableFutureStatusAttributes;
            List<Result> resultList;
            Map<String, Object> statusAttributes;

            try{
                completableFutureResults = results.all();
                completableFutureStatusAttributes = results.statusAttributes();
                resultList = completableFutureResults.get();
                statusAttributes = completableFutureStatusAttributes.get();            
            }
            catch(ExecutionException | InterruptedException e){
                e.printStackTrace();
                break;
            }
            catch(Exception e){
                ResponseException re = (ResponseException) e.getCause();

                // Response status codes. You can catch the 429 status code response and work on retry logic.
                System.out.println("Status code: " + re.getStatusAttributes().get().get("x-ms-status-code")); 
                System.out.println("Substatus code: " + re.getStatusAttributes().get().get("x-ms-substatus-code")); 

                // If error code is 429, this value will inform how many milliseconds you need to wait before retrying.
                System.out.println("Retry after (ms): " + re.getStatusAttributes().get().get("x-ms-retry-after"));

                // Total Request Units (RUs) charged for the operation, upon failure.
                System.out.println("Request charge: " + re.getStatusAttributes().get().get("x-ms-total-request-charge"));

                // ActivityId for server-side debugging
                System.out.println("ActivityId: " + re.getStatusAttributes().get().get("x-ms-activity-id"));
                throw(e);
            }

            for (Result result : resultList) {
                System.out.println("\nQuery result:");
                System.out.println(result.toString());
            }

            // Status code for successful query. Usually HTTP 200.
            System.out.println("Status: " + statusAttributes.get("x-ms-status-code").toString());

            // Total Request Units (RUs) charged for the operation, after a successful run.
            System.out.println("Total charge: " + statusAttributes.get("x-ms-total-request-charge").toString());
        }

        System.out.println("Demo complete!\n Press Enter key to continue...");
        try{
            System.in.read();
        } catch (IOException e){
            e.printStackTrace();
            return;
        }

        // Properly close all opened clients and the cluster
        cluster.close();

        System.exit(0);
    }
}

yaml 文件：

hosts: [***.gremlin.cosmosdb.azure.com]
port: 443
username: /dbs/db/colls/coll

connectionPool: {
  enableSsl: true}
serializer: { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV2d0, config: { serializeResultToString: true }}

所以，恐怕根本原因是代币的产生。

输入日期标题格式无效。请传入 RFC 1123 样式的日期格式。

我搜索了这个与 cosmos db 相关的错误消息，并找到了这个案例供您参考。似乎解决方案正在更改本地区域设置x-ms-date。您可以使用 Fiddler 跟踪请求的标头。

于 2020-01-14T09:24:52.260 回答
0

通过 Azure 支持，我发现问题是 Azure 方面的错误。将自定义 VNet 与 Cosmos 一起使用时会发生这种情况。同时 Azure 已修复它，一切正常。

于 2020-06-16T16:03:35.293 回答