data_source_tracking.go

package main

import (
    "fmt"
    "time"
    "log"
    "net/http"
    "encoding/json"
    "github.com/hashicorp/terraform/helper/schema"
)

func dataSourceTracking() *schema.Resource {
	return &schema.Resource{
		Read:   resourceTrackingRead,
		Schema: map[string]*schema.Schema{
		"order_id": &schema.Schema{
				Type:     schema.TypeString,
				Required: true,
            },
        "store_id": &schema.Schema{
            Type: schema.TypeString,
            Required: true,
            },
        },
    }
}

func resourceTrackingRead(d *schema.ResourceData, m interface{}) error {
    var client = &http.Client{Timeout: 10 * time.Second}
    order_id := d.Get("order_id").(string)
    store_id := d.Get("store_id").(string)
    _, err := getTrackingApiObject(fmt.Sprintf("https://trkweb.dominos.com/orderstorage/GetTrackerData?StoreID=%s&OrderKey=%s", store_id, order_id), client)
    if err != nil {
        return err
    }
    return nil
}

func getTrackingApiObject(url string, client *http.Client) (map[string]interface{}, error) {
    r, err := client.Get(url)
    if err != nil {
        return nil, err
    }
    defer r.Body.Close()
    resp := make(map[string]interface{})
    err = json.NewDecoder(r.Body).Decode(&resp)
    log.Printf("Tracking response: %#v", resp)
    return resp, err
}