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v5.0
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    v5.0

      Connection

      After installing the Ultipa Node.js SDK and setting up a running Ultipa instance, you should be able to connect your application to the Ultipa graph database.

      ConnectionPool

      Connection to Ultipa can be established by using ConnectionPool, which specifies the information of the connection pool needed.

      Below are all the configuration items available for ConnectionPool:

      Item
      Type
      Description
      hosts string[] Database host addresses or host URI (excluding "https://" or "http://"). For clusters, multiple addresses are seperated by commas. Required.
      username string Username of the host authentication. Required.
      password string Password of the host authentication. Required.
      crt Buffer Sets the local certificate file path. SSL will be used for connection.
      defaultConfig ULTIPA.UltipaConfig Other configurations include settings for the graphset, timeout, and consistency.
      otherParams object Two keys are available: isHttps and isHttp, both as boolean values. If both are set to true, HTTP is used first. If not specified, the connection tries HTTP first, and switches to HTTPS if HTTP fails.

      Connect to a Cluster

      Example of connecting to a cluster and using graphset 'default'.

      import { ConnectionPool } from "@ultipa-graph/ultipa-node-sdk";
      import fs from "fs";
      
      let sdkUsage = async () => {
      
        let hosts = [
          "192.168.1.85:60061", 
          "192.168.1.86:60061", 
          "192.168.1.87:60061"
        ];
        let username = "***";
        let password = "***";
        let crt: Buffer;
        { // Crt is used
          let crt_file_path = "./ultipa.crt";
          crt = fs.readFileSync(crt_file_path);
        }
        let connPool = new ConnectionPool(hosts, username, password, crt);
        
        let conn = await connPool.getActive();
        let isSuccess = await conn.test();
        console.log(isSuccess);
      };
      
      sdkUsage().then(console.log).catch(console.log);
      

      Connect to Ultipa Cloud

      Example of connecting to an instance on Ultipa Cloud and using graphset 'default'.

      import { ConnectionPool } from "@ultipa-graph/ultipa-node-sdk";
      
      let sdkUsage = async () => {
      
        let hosts = ["3xbotdjas.us-east-1.cloud.ultipa.com:60010"];
        let username = "***";
        let password = "***";
        let otherParams = {
          isHttps: true,
          isHttp: false
        };
        let connPool = new ConnectionPool(hosts, username, password, undefined, undefined, otherParams);
        
        let conn = await connPool.getActive();
        let isSuccess = await conn.test();
        console.log(isSuccess);
      };
      
      sdkUsage().then(console.log).catch(console.log);
      

      Configuration Items

      Below are all the configuration items available for UltipaConfig:

      Item
      Type
      Description
      graphSetName string Name of the graph to use. If not set, use the graphSetName configured when establishing the connection.
      timeout number Request timeout threshold in seconds.
      consistency boolean Whether to use the leader node to ensure consistency read.
      useHost string Sends the request to a designated host node, or to a random host node if not set.
      clusterID string Specifies the cluster to use.
      timeZone string The time zone to use.
      timeZoneOffset number The amount of time that the time zone in use differs from UTC in minutes.
      timestampToString boolean Whether to convert timestamp to string.
      logUql boolean Whether to print the UQL.
      threadNum number Number of threads.
      responseWithRequestInfo boolean Whether to include request information in the response.
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