Question

我正在开发一个python应用程序，我想使用installed app flow访问我的AdWords帐户，并希望使用该页面上Distributed Apps部分中提到的最佳做法。我的AdWords API使用情况归结为：

启动Oauth2流程，并在用户登录我的网站时检索刷新令牌和访问令牌，并授予我访问其AdWords帐户的权限
使用检索到的刷新令牌和访问令牌从用户访问一些基本的AdWords信息，并保存这些令牌以供日后使用
检索步骤2中保存的访问令牌，定期代表用户拨打AdWords api电话
如果访问令牌已过期，请使用步骤2中保存的刷新令牌来创建新的访问令牌。

步骤＃1很简单，并且记录良好here：

import java.util.*;

public class Trip {

    /** An item in the expanses list */
    static class Item {
        final String item;
        final int cost;
        public Item(String item, int cost) {
            this.item = item;
            this.cost = cost;
        }
        @Override public String toString() {
            return this.item + " (" + this.cost + "$)";
        }
    }

    /** A map with category as key and the associed list of items as value */
    Map<String,List<Item>> expanses;


    public Trip() {
        this.expanses = new HashMap<String,List<Item>>();
        String[] categories = {"food","clothes","souvenir"};
        for (String cat: categories) { // init the categories with empty lists
            this.expanses.put(cat, new ArrayList<Item>());
        }
    }



    /** Register a new expanse to the trip. */
    public void add(String item, int cost, String category) {
        List<Item> list = this.expanses.get(category);
        if (list == null)
            throw new IllegalArgumentException("Category '"+category+"' does not exist.");
        list.add( new Item(item, cost) );
    }

    /** Get the expanses, given a category.
     * @return  a fresh ArrayList containing the category elements, or null if the category does not exists
     */
    public List<Item> getItems(String category) {
        List<Item> list = this.expanses.get(category);
        if (list == null)
            return null;
        return new ArrayList<Item>(list);
    }

    /** Get the expanses, given a category.
     * @return  a fresh ArrayList containing all the elements
     */
    public List<Item> getItems() {
        List<Item> list = new ArrayList<Item>();
        for (List<Item> l: this.expanses.values()) // fill with each category items
            list.addAll(l);
        return list;
    }

    /** Get the total cost, given a category. */
    public int getCost(String category) {
        List<Item> list = this.expanses.get(category);
        if (list == null)
            return -1;
        int cost = 0;
        for (Item item: list)
            cost += item.cost;
        return cost;
    }

    /** Get the total cost. */
    public int getCost() {
        int cost = 0;
        for (List<Item> l: this.expanses.values())
            for (Item item: l)
                cost += item.cost;
        return cost;
    }


    // lets test this structure
    public static void main(String[] args) {

        Trip trip1 = new Trip();

        trip1.add("apple", 10, "food");
        trip1.add("cheese", 15, "food");
        trip1.add("hat", 30, "clothes");


        System.out.println( trip1.getItems("food") );
        System.out.println( trip1.getCost("food") );
        System.out.println();
        System.out.println( trip1.getItems() );
        System.out.println( trip1.getCost() );

    }

}

步骤＃2也有详细记录here：

flow = OAuth2WebServerFlow(client_id='your_client_id',
                       client_secret='your_client_secret',
                       scope='https://www.googleapis.com/auth/calendar',
                       redirect_uri='http://example.com/auth_return')
auth_uri = flow.step1_get_authorize_url()
credentials = flow.step2_exchange(code)

但我无法弄清楚如何仅使用访问令牌进行身份验证。 oauth2_client = oauth2.GoogleRefreshTokenClient( client_id, client_secret, refresh_token) adwords_client = adwords.AdWordsClient( developer_token, oauth2_client, user_agent, client_customer_id=client_customer_id)课程在这里至关重要，因为这是我与AdWords API互动的方式。但我似乎无法弄清楚如何在没有googleads.adwords.AdWordsClient对象的情况下实例化该类。并且实例化GoogleRefreshTokenClient对象需要刷新令牌而不是访问令牌。我不想在每次需要进行AdWords API调用时实例化GoogleRefreshTokenClient对象，因为这会迫使我每次都生成一个新的访问令牌，这会让我违反Google服务条款。

如何使用以前缓存的访问令牌使用Adwords进行身份验证？

0 个答案: