dp-search-api SDK

Overview

The search API contains a Go client for interacting with the API. The client contains a methods for each API endpoint so that any Go application wanting to interact with the search api can do so. Please refer to the swagger specification as the source of truth of how each endpoint works.

Example use of the API SDK

Initialise new Search API client

package main

import (
	"context"
	"github.com/ONSdigital/dp-search-api/sdk"
)

func main() {
    ...
	searchAPIClient := sdk.NewClient("http://localhost:23900")
    ...
}

Create Index

Use the CreateIndex method to send a request to generate a new search index. This is a private endpoint and requires authorisation header.

...
    // Set authorisation header
    headers := make(map[header][]string)
	headers[Authorisation] = []string{"Bearer authorised-user"}

    resp, err := searchAPIClient.CreateIndex(ctx, sdk.Options{sdk.Headers: headers})
    if err != nil {
        // handle error
    }

    /* If successdul the resp value will be *CreateIndexResponse struct found in github.com/ONSdigital/dp-search-api/models package

    JSON equivalent:
    {
        "index_name": <value>,
    }
    */
...

Get Search Results

Use the GetSearch method to send a request to find search results based on query parameters. Authorisation header needed if hitting private instance of application.

...
    // Set query parameters - no limit to which keys and values you set - please refer to swagger spec for list of available parameters
    query := url.Values{}
    query.Add("q", "census")

    resp, err := searchAPIClient.GetSearch(ctx, sdk.Options{sdk.Query: query})
    if err != nil {
        // handle error
    }
...

Get Release Calendar Entires

Use the GetReleaseCalendarEntries method to send a request to find release calendar entries based on query parameters. Authorisation header needed if hitting private instance of application.

...
    // Set query parameters - no limit to which keys and values you set - please refer to swagger spec for list of available parameters
    query := url.Values{}
    query.Add("q", "census")

    resp, err := searchAPIClient.GetReleaseCalendarEntries(ctx, sdk.Options{sdk.Query: query})
    if err != nil {
        // handle error
    }
...

Handling errors

The error returned from the method contains status code that can be accessed via Status() method and similar to extracting the error message using Error() method; see snippet below:

...
    _, err := searchAPIClient.GetSearch(ctx, Options{})
    if err != nil {
        // Retrieve status code from error
        statusCode := err.Status()
        // Retrieve error message from error
        errorMessage := err.Error()

        // log message, below uses "github.com/ONSdigital/log.go/v2/log" package
        log.Error(ctx, "failed to retrieve search results", err, log.Data{"code": statusCode})

        return err
    }
...