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    pip-services-facets-node
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    1.0.1 • Public • Published

    Faceted Search Microservice

    This is a faceted search microservice from Pip.Services library. It allows to search "facets" recorded by other microservices. For instance, statistics microservice can record groups and later use them in counters search.

    The microservice currently supports the following deployment options:

    • Deployment platforms: Standalone Process, Seneca
    • External APIs: HTTP/REST, Seneca
    • Persistence: Flat Files, MongoDB

    This microservice has no dependencies on other microservices.

    Quick Links:

    Contract

    Logical contract of the microservice is presented below. For physical implementation (HTTP/REST, Thrift, Seneca, Lambda, etc.), please, refer to documentation of the specific protocol.

    class FacetV1 {
        public group: string;
        public name: string;
        public count: number;
    }
     
    interface IFacetsV1 {
        getFacetsByGroup(correlationId: string, group: string,
            callback: (err: any, facet: FacetV1) => void): void;
     
        addFacet(correlationId: string, group: string, name: string,
            callback: (err: any, facet: FacetV1) => void): void;
     
        removeFacet(correlationId: string, group: string, name: string,
            callback: (err: any, facet: FacetV1) => void): void;
        
        deleteFacetsByGroup(correlationId: string, group: string,
            callback: (err: any) => void): void;
     
        clear(correlationId: string, callback: (err: any) => void): void;
    }

    Download

    Right now the only way to get the microservice is to check it out directly from github repository

    git clone git@github.com:pip-services-content/pip-services-facets-node.git

    Pip.Service team is working to implement packaging and make stable releases available for your as zip downloadable archieves.

    Run

    Add config.yml file to the root of the microservice folder and set configuration parameters. As the starting point you can use example configuration from config.example.yml file.

    Example of microservice configuration

    descriptor: "pip-services-container:container-info:default:default:1.0"
      name: "pip-services-facets"
      description: "Facets microservice"
     
    descriptor: "pip-services-commons:logger:console:default:1.0"
      level: "trace"
     
    descriptor: "pip-services-facets:persistence:file:default:1.0"
      path: "./data/facets.json"
     
    descriptor: "pip-services-facets:controller:default:default:1.0"
      options:
        max_facet_count: 100
     
    descriptor: "pip-services-facets:service:http:default:1.0"
      connection:
        protocol: "http"
        host: "0.0.0.0"
        port: 8080

    For more information on the microservice configuration see Configuration Guide.

    Start the microservice using the command:

    node run

    Use

    The easiest way to work with the microservice is to use client SDK. The complete list of available client SDKs for different languages is listed in the Quick Links

    If you use Node.js then you should add dependency to the client SDK into package.json file of your project

    {
        ...
        "dependencies": {
            ....
            "pip-clients-facets-node": "^1.0.*",
            ...
        }
    }

    Inside your code get the reference to the client SDK

    var sdk = new require('pip-clients-facets-node');

    Define client configuration parameters that match configuration of the microservice external API

    // Client configuration
    var config = {
        connection: {
            protocol: 'http',
            host: 'localhost', 
            port: 8080
        }
    };

    Instantiate the client and open connection to the microservice

    // Create the client instance
    var client = sdk.HttpRestClientV1(config);
     
    // Connect to the microservice
    client.open(null, function(err) {
        if (err) {
            console.error('Connection to the microservice failed');
            console.error(err);
            return;
        }
        
        // Work with the microservice
        ...
    });

    Now the client is ready to perform operations

    // Record facets for a user
    client.addFacet(
        null,
        'statistics',
        '12234',
        function (err, facet) {
            ...
        }
    );
    // Get the list of user facets
    client.getFacetsByGroup(
        null,
        'statistics',
        function(err, facets) {
            ...    
        }
    );

    Acknowledgements

    This microservice was created and currently maintained by Sergey Seroukhov.

    Install

    npm i pip-services-facets-node

    DownloadsWeekly Downloads

    37

    Version

    1.0.1

    License

    MIT

    Unpacked Size

    140 kB

    Total Files

    134

    Last publish

    Collaborators

    • pipdeveloper