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:

• Algo[]: The list of all algorithms retrieved.

// Retrieves all Ultipa graph algorithms installed and prints the information of the first returned one

let resp = await conn.showAlgo();

let algo_list = resp.data.map((item) => item.param);
console.log("First algorithm retrieved: ", algo_list[0]);

First algorithm retrieved:  {
  name: 'bipartite',
  description: 'bipartite check',
  version: '1.0.1',
  parameters: {},
  result_opt: '56'
}

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:

• Response: Result of the request.

// Installs the algorithm LPA and uses the leader node to guarantee consistency, and prints the error code

let requestConfig = <RequestType.RequestConfig>{
  useMaster: true,
};

let resp = await conn.installAlgo(
  "E:/NodeJs/Algo/libplugin_lpa.so",
  "E:/NodeJs/Algo/lpa.yml"
);
console.log(resp.status.code_desc);

["libplugin_lpa.so","lpa.yml"] upload finished!
SUCCESS

uninstallAlgo()

Uninstalls an Ultipa graph algorithm in the instance.

Parameters:

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

Returns:

• Response: Result of the request.

// Uninstalls the algorithm LPA and prints the error code

let resp = await conn.uninstallAlgo("lpa");
console.log(resp.status.code_desc);

SUCCESS

EXTA

showExta()

Retrieves all extas installed in the instance.

Parameters:

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

Returns:

• Exta[]: The list of all extas retrieved.

// Retrieves all extas installed and prints the information of the first returned one

let resp = await conn.showExta();
console.log(resp.data);

[
  {
    name: 'page_rank 1',
    author: 'xxx',
    version: 'beta.4.4.41-b4.4.0-tv-ui',
    detail: 'base:\n' +
      '  category: ExtaExample\n' +
      '  cn:\n' +
      '    name: page_rank\n' +
      '    desc: null\n' +
      '  en:\n' +
      '    name: page_rank\n' +
      '    desc: null\n' +
      '\n' +
      'other_param:\n' +
      '\n' +
      '    \n' +
      'param_form:\n' +
      '\n' +
      'write:\n' +
      '\n' +
      'return:\n' +
      '\n' +
      'media:\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:

• Response: Result of the request.

// Installs the exta page_rank and uses the leader node to guarantee consistency, and prints the error code

let requestConfig = <RequestType.RequestConfig>{
  useMaster: true,
};

let resp = await conn.installExta(
  "E:/NodeJs/Exta/libexta_page_rank.so",
  "E:/NodeJs/Exta/page_rank.yml",
  requestConfig
);
console.log(resp.status.code_desc);

["libexta_page_rank.so","page_rank.yml"] upload finished!
SUCCESS

uninstallExta()

Uninstalls an exta in the instance.

Parameters:

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

Returns:

• Response: Result of the request.

// Uninstalls the exta page_rank and prints the error code

let resp = await conn.uninstallExta("page_rank");
console.log(resp.status.code_desc);

SUCCESS

Full Example

import { ConnectionPool, ULTIPA } from "@ultipa-graph/ultipa-node-sdk";
import { GraphExra } from "@ultipa-graph/ultipa-node-sdk/dist/connection/extra/graph.extra";
import { getEdgesPrintInfo } from "@ultipa-graph/ultipa-node-sdk/dist/printers/edge";
import { RequestType } from "@ultipa-graph/ultipa-node-sdk/dist/types";
import { ListFormat } from "typescript";

let sdkUsage = async () => {
  // Connection configurations
  //URI example: hosts="mqj4zouys.us-east-1.cloud.ultipa.com:60010"
  let hosts = [
    "192.168.1.85:60061",
    "192.168.1.86:60061",
    "192.168.1.87:60061",
  ];
  let username = "***";
  let password = "***";
  let connPool = new ConnectionPool(hosts, username, password);

  // Establishes connection to the database
  let conn = await connPool.getActive();
  let isSuccess = await conn.test();
  console.log(isSuccess);

  // Request configurations
  let requestConfig = <RequestType.RequestConfig>{
    useMaster: true,
  };

  // Installs the algorithm LPA
  let resp = await conn.installAlgo(
    "E:/NodeJs/Algo/libplugin_lpa.so",
    "E:/NodeJs/Algo/lpa.yml",
    requestConfig
  );
  console.log(resp.status.code_desc);
};

sdkUsage().then(console.log).catch(console.log);