Example of using a Custom Authorizer with Couchbase Lite in Java

CustomAuthorizer.java

package com.domain.example

import com.couchbase.lite.Database;
import com.couchbase.lite.auth.Authorizer;
import com.couchbase.lite.util.Log;

import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by Akeem Philbert <akeem.philbert@wepala.com> on 4/7/14.
 */
public class CustomAuthorizer extends Authorizer {

    private String emailAddress;
    private static final String AUTHENTICATE_ENDPOINT = "/some/endpoint";
    private static Map<String, String> accessTokens;
    public static final String LOGIN_PARAMETER_ACCESS_TOKEN = "variable_name";

    public CustomAuthorizer(String emailAddress) {
        this.emailAddress = emailAddress;
    }

    public boolean usesCookieBasedLogin() {
        return true;
    }

    public String loginPathForSite(URL site) {
        return AUTHENTICATE_ENDPOINT;
    }

    public Map<String, String> loginParametersForSite(URL site) {
        Map<String, String> loginParameters = new HashMap<String, String>();
        try {
            String accessToken = accessTokenForEmailAndSite(this.emailAddress, site);
            if (accessToken != null) {
                loginParameters.put(LOGIN_PARAMETER_ACCESS_TOKEN, accessToken);
                return loginParameters;
            } else {
                return null;
            }
        } catch (Exception e) {
            Log.e(Database.TAG, "Error looking login parameters for site", e);
        }
        return null;
    }

    public synchronized static String registerAccessToken(String accessToken, String email) {
        if (accessTokens == null) {
            accessTokens = new HashMap<String, String>();
        }
        Log.d(Database.TAG, "CustomAuthorizer registering key: " + email);
        accessTokens.put(email, accessToken);

        return email;

    }


    public static String accessTokenForEmailAndSite(String email, URL site) {
        try {
            Log.d(Database.TAG, "CustomAuthorizer looking up key: " + email + " from list of access tokens");
            return accessTokens.get(email);
        } catch (Exception e) {
            Log.e(Database.TAG, "Error looking up access token", e);
        }
        return null;
    }
}