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      Algorithm Management

      This section introduces methods on a Connection object for managing Ultipa graph algorithms and custom algorithms (EXTA) in the instance.

      Each example focuses solely on the method's usage. For a complete code example, please refer to the full example.

      Ultipa Graph Algorithms

      ShowAlgo()

      Retrieves all Ultipa graph algorithms installed in the instance.

      Parameters:

      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • List<Algo>: The list of all algorithms retrieved.

      // Retrieves all Ultipa graph algorithms installed and prints the information of the first returned one
      
      var res = await ultipa.ShowAlgo();
      Console.WriteLine(JsonConvert.SerializeObject(res[0].Params));
      

      "{\"name\":\"louvain\",\"description\":\"louvain\",\"version\":\"1.0.4\",\"parameters\":{\"edge_schema_property\":\"optinal,default 1 for each edge if absent\",\"phase1_loop_num\":\"size_t,required\",\"min_modularity_increase\":\"float,required\",\"limit\":\"optional,-1 for all results, >=0 partial results\",\"order\":\"optional, asc or desc, case_unsensitive, only work for 'community:id/count' mode\"},\"write_to_db_parameters\":{\"property\":\"set write back property name for each schema and nodes\"},\"write_to_file_parameters\":{\"filename1\":\"id1:community\",\"filename2\":\"community1: id1,id2...\",\"filename3\":\"community1: count\"},\"write_to_stats_parameters\":{\"enable\":\"0:no stats, 1:enable stats(count of communities)\"},\"write_to_client_normal_parameters\":{\"mode\":\"1:<id1:community>   2:<community1:count>\"},\"write_to_client_stream_parameters\":{\"mode\":\"1:<id1:community>   2:<community1:count>\"},\"result_opt\":\"59\"}"
      

      InstallAlgo()

      Installs an Ultipa graph algorithm in the instance.

      Parameters:

      • string: File path of the algo installation package (.so).
      • string: File path of the configuration file (.yml).
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • InstallAlgoReply: Result of the request.

      // Installs the algorithm LPA and uses the leader node to guarantee consistency, and prints the error code
      
      RequestConfig requestConfig = new RequestConfig() { UseMaster = true };
      
      var res = await ultipa.InstallAlgo(
          "E:/Algo/libplugin_lpa.so",
          "E:/Algo/lpa.yml",
          requestConfig   
      );
      Console.WriteLine(res.Status.ErrorCode);
      

      Success
      

      UninstallAlgo()

      Uninstalls an Ultipa graph algorithm in the instance.

      Parameters:

      • string: Name of the algorithm.
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • UninstallAlgoReply: Result of the request.

      // Uninstalls the algorithm LPA and prints the error code
      
      var res = ultipa.UninstallAlgo("lpa");
      Console.WriteLine(res.Status.ErrorCode);
      

      Success
      

      EXTA

      ShowExta()

      Retrieves all extas installed in the instance.

      Parameters:

      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • List<Exta>: The list of all extas retrieved.

      // Retrieves all extas installed and prints the information of the first returned one
      
      var res = await ultipa.ShowExta();
      Console.WriteLine(JsonConvert.SerializeObject(res[0]));
      

      {"Author":"wuchuang","Name":"page_rank","Version":"beta.4.4.41-b4.4.0-tv-ui","Detail":"base:\r\n  category: ExtaExample\r\n  cn:\r\n    name: page_rank\r\n    desc: null\r\n  en:\r\n    name: page_rank\r\n    desc: null\r\n\r\nother_param:\r\n\r\n    \r\nparam_form:\r\n\r\nwrite:\r\n\r\nreturn:\r\n\r\nmedia:\r\n"}
      

      InstallExta()

      Installs an exta in the instance.

      Parameters:

      • string: File path of the exta installation package (.so).
      • string: File path of the configuration file (.yml).
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • InstallExtaReply: Result of the request.

      // Installs the exta page_rank and uses the leader node to guarantee consistency, and prints the error code
      
      RequestConfig requestConfig = new RequestConfig() { UseMaster = true };
      
      var res = await ultipa.InstallExta(
          "E:/Exta/libexta_page_rank.so",
          "E:/Exta/page_rank.yml",
          requestConfig
      );
      Console.WriteLine(res.Status.ErrorCode);
      

      Success
      

      UninstallExta()

      Uninstalls an exta in the instance.

      Parameters:

      • string: Name of the exta.
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • UninstallExtaReply: Result of the request.

      // Uninstalls the exta page_rank and prints the error code
      
      var res = ultipa.UninstallExta("page_rank");
      Console.WriteLine(res.Status.ErrorCode);
      

      Success
      

      Full Example

      using System.Security.Cryptography.X509Certificates;
      using System.Threading;
      using System.Xml.Linq;
      using Microsoft.Extensions.Logging;
      using Newtonsoft.Json;
      using UltipaService;
      using UltipaSharp;
      using UltipaSharp.api;
      using UltipaSharp.configuration;
      using UltipaSharp.connection;
      using UltipaSharp.exceptions;
      using UltipaSharp.structs;
      using UltipaSharp.utils;
      using Logger = UltipaSharp.utils.Logger;
      using Property = UltipaSharp.structs.Property;
      using Schema = UltipaSharp.structs.Schema;
      
      class Program
      {
          static async Task Main(string[] args)
          {
              // Connection configurations
              //URI example: Hosts=new[]{"mqj4zouys.us-east-1.cloud.ultipa.com:60010"}
              var myconfig = new UltipaConfig()
              {
                  Hosts = new[] { "192.168.1.85:60061", "192.168.1.86:60061", "192.168.1.87:60061" },
                  Username = "***",
                  Password = "***",
              };
      
              // Establishes connection to the database
              var ultipa = new Ultipa(myconfig);
              var isSuccess = ultipa.Test();
              Console.WriteLine(isSuccess);
      
              // Request configurations
              RequestConfig requestConfig = new RequestConfig() { UseMaster = true };
      
              // Installs the algorithm LPA
              var res = await ultipa.InstallAlgo(
                  "E:/Algo/libplugin_lpa.so",
                  "E:/Algo/lpa.yml",
                  requestConfig
              );
              Console.WriteLine(res.Status.ErrorCode);
          }
      }
      
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