如何从 Android 客户端调用 zumero_internal_auth_add_user

Question

我正在更新我的 Android 应用以使用 Zumero 来处理数据同步。每个用户都将在服务器上获得自己的 dbfile，以及他们自己的内部身份验证帐户。但是，我无法让 zumero_internal_auth_add_user 在 Android 中工作。

我用SQLiteDatabase.execSQL调用函数，生成如下形式的SQL：

SELECT zumero_internal_auth_add_user(
    '<ZUMERO URL>’,
    'test1_users',
    zumero_internal_auth_scheme('zumero_users_admin'),
    'admin',
    '<ADMIN_PWD>',
    'username',
    'pwd'
    );

这会导致错误代码为 100（未知错误）的 SQLiteException。日志显示操作显然成功了（http 状态码是 204: No Content），但是 Zumero 库没有识别到​​这一点（也许它只期望 200？）并抛出异常。

06-04 23:13:42.247: V/Zumero(15442): execute for query: SELECT zumero_internal_auth_add_user(?, ?, zumero_internal_auth_scheme('zumero_users_admin'), ?, ?, ?, ?)
06-04 23:13:42.247: V/ZUMERO(15442): Network call started.
06-04 23:13:42.247: V/ZUMERO(15442): got JNI env.
06-04 23:13:42.247: V/ZUMERO(15442): Looked up java classes.
06-04 23:13:42.247: V/ZUMERO(15442): Initiating Network connection.
06-04 23:13:42.302: D/dalvikvm(15442): GC_CONCURRENT freed 132K, 2% free 9120K/9280K, paused 3ms+5ms, total 25ms
06-04 23:13:42.825: V/ZUMERO(15442): HTTP connection finished.
06-04 23:13:42.825: V/ZUMERO(15442): HTTP status code: 204.
06-04 23:13:42.825: V/ZUMERO(15442): HTTP error code: 0.
06-04 23:13:42.825: V/ZUMERO(15442): Network connection completed successfully.
06-04 23:13:42.825: W/dalvikvm(15442): threadid=13: thread exiting with uncaught exception (group=0x40b4d930)
06-04 23:13:42.833: E/AndroidRuntime(15442): FATAL EXCEPTION: AsyncTask #1
06-04 23:13:42.833: E/AndroidRuntime(15442): java.lang.RuntimeException: An error occured while executing doInBackground()
06-04 23:13:42.833: E/AndroidRuntime(15442):    at android.os.AsyncTask$3.done(AsyncTask.java:299)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.util.concurrent.FutureTask.run(FutureTask.java:239)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-04 23:13:42.833: E/AndroidRuntime(15442):    at java.lang.Thread.run(Thread.java:856)
06-04 23:13:42.833: E/AndroidRuntime(15442): Caused by: com.zumero.sqlite.SQLiteException: error code 100: unknown error
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.zumero.sqlite.SQLiteStatement.native_execute(Native Method)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.zumero.sqlite.SQLiteStatement.execute(SQLiteStatement.java:63)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.zumero.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1810)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.ZumeroBackend.addUser(ZumeroBackend.java:31)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.PeopleProvider.insert(PeopleProvider.java:150)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at android.content.ContentProvider$Transport.insert(ContentProvider.java:201)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at android.content.ContentResolver.insert(ContentResolver.java:866)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.PeopleActivity.setAccount(PeopleActivity.java:265)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.PeopleActivity.access$3(PeopleActivity.java:262)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.PeopleActivity$4.doInBackground(PeopleActivity.java:250)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at com.example.people.PeopleActivity$4.doInBackground(PeopleActivity.java:1)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-04 23:18:16.575: E/AndroidRuntime(15713):    at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-04 23:18:16.575: E/AndroidRuntime(15713):    ... 4 more

如果我再次尝试添加相同的用户，操作将失败并显示zumero:unique_constraint_violation，这证实了我对原始调用成功的怀疑。我尝试在 SQLite shell（在 Windows 上）中运行 zumero_internal_auth_add_user，它运行良好，这表明问题是特定于 Android 库的。我提取了 zumero_log dbfile，发现zumero_internal_auth_add_user 在两种情况下都返回 204（来自 Android 和 SQLite shell）。

是我做错了什么，还是 Zumero Android 库中存在错误？

Answer 1

这是我处理这个用例的代码。我从未收到您看到的确切错误（错误代码 100：未知错误）。我的代码针对在 Nexus 10 上运行的 android-16 版本的 zumero 库进行了测试。

public class MainActivity extends Activity {

    private File tempDBFullPath;
    private String dbName;
    private String cacheDir;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //Get the full path to the databases directory. 
        File databasesPath = this.getDatabasePath("blah").getParentFile();
        if (!databasesPath.isDirectory()) {
            //These lines make sure that the databases directory is created.
            databasesPath.mkdirs();
        }
        //Append the time to make sure that we create a new,empty database 
        //and a new internal auth db each time we run this Activity.
        this.dbName = "testdb" + new Date().getTime();

        this.tempDBFullPath = new File(databasesPath, dbName);
        this.cacheDir = this.getCacheDir().getAbsolutePath();



        //Can't do network on the main thread.
        AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {

            @Override
            protected Void doInBackground(Void... params) {
                com.zumero.sqlite.SQLiteDatabase db = com.zumero.sqlite.SQLiteDatabase.openOrCreateDatabase(MainActivity.this.tempDBFullPath, null);
                String userDB = MainActivity.this.dbName + "_users";
                boolean bExec = false;
                String serverAddress = "https://zinst12345.s.zumero.net";
                String adminPassword = "PASSWORD";

                Log.v("test", "========  creating internal auth   ==========");

                Cursor c = null;
                if (bExec) {
                    //When I run this one, I get "com.zumero.sqlite.SQLiteException: unknown error: Queries cannot be performed using execSQL(), use query() instead."
                    //That behavior matches the gingerbread android database package.
                    db.execSQL("SELECT zumero_internal_auth_create('" + serverAddress +"', '" + userDB + "', zumero_internal_auth_scheme('zumero_users_admin'), 'admin', '" + adminPassword + "', NULL,NULL,'',zumero_named_constant('acl_who_anyone'),'',zumero_named_constant('acl_who_anyone') );)");
                }
                else {
                    //This one works.
                    c = db.rawQuery("SELECT zumero_internal_auth_create(?, ?, zumero_internal_auth_scheme(?), ?, ?, NULL,NULL,'',zumero_named_constant('acl_who_anyone'),'',zumero_named_constant('acl_who_anyone') );", new String[] {serverAddress, userDB, "zumero_users_admin", "admin", adminPassword });
                    //WATCH OUT! rawQuery doesn't actually execute until the call to moveToFirst.
                    c.moveToFirst();
                }

                Log.v("test", "========  adding user   ==========");

                if (bExec) {
                    //When I run this one, I get "com.zumero.sqlite.SQLiteException: unknown error: Queries cannot be performed using execSQL(), use query() instead."
                    db.execSQL("SELECT zumero_internal_auth_add_user('" + serverAddress + "', '" + userDB + "', zumero_internal_auth_scheme('zumero_users_admin'), 'admin', '" + adminPassword + "', 'newUsername', 'newPassword');");
                }
                else {
                    //This one works.
                    c =  db.rawQuery("SELECT zumero_internal_auth_add_user(?, ?, zumero_internal_auth_scheme(?), ?, ?, ?, ?);", new String[] {serverAddress, userDB, "zumero_users_admin", "admin", adminPassword, "newUsername", "newPassword" } );
                    c.moveToFirst();
                }

                Log.v("test", "========  creating zumero acl table for this DB file.   ==========");

                c = db.rawQuery("SELECT zumero_define_acl_table('main');", null);
                c.moveToFirst();

                Log.v("test", "========  giving newUsername full permission to this DB file.   ==========");

                db.execSQL("INSERT INTO z_acl (scheme,who,tbl,op,result) VALUES (zumero_internal_auth_scheme('" + userDB + "'), zumero_named_constant('acl_who_specific_user') || 'newUsername', '', '*', zumero_named_constant('acl_result_allow'));");

                Log.v("test", "========  executing admin sync so that the server has the new acl table  ==========");

                c = db.rawQuery("SELECT zumero_sync('main', ?, ?, zumero_internal_auth_scheme(?), ?, ?, ?);", new String[] {serverAddress, dbName, "zumero_users_admin", "admin", adminPassword, MainActivity.this.cacheDir } );
                c.moveToFirst();

                Log.v("test", "========  executing sync as the new user.  ==========");

                c = db.rawQuery("SELECT zumero_sync('main', ?, ?, zumero_internal_auth_scheme(?), ?, ?, ?);", new String[] {serverAddress, dbName, userDB, "newUsername", "newPassword", MainActivity.this.cacheDir } );
                c.moveToFirst();

                db.close();

                return null;
            }
        };

        task.execute((Void)null);

        setContentView(R.layout.activity_main);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);

        return true;
    }

}