Examples with DatastoreException com.google.cloud.datastore.DatastoreException used on opensource projects

Example 6 with DatastoreException

use of com.google.cloud.datastore.DatastoreException in project google-cloud-java by GoogleCloudPlatform.

the class ITDatastoreTest method testGetArrayNoDeferredResults.

@Test
public void testGetArrayNoDeferredResults() {
    DATASTORE.put(ENTITY3);
    Iterator<Entity> result = DATASTORE.fetch(KEY1, Key.newBuilder(KEY1).setName("bla").build(), KEY2, KEY3).iterator();
    assertEquals(ENTITY1, result.next());
    assertNull(result.next());
    assertEquals(ENTITY2, result.next());
    Entity entity3 = result.next();
    assertEquals(ENTITY3, entity3);
    assertTrue(entity3.isNull("null"));
    assertFalse(entity3.getBoolean("bool"));
    assertEquals(LIST_VALUE2.get(), entity3.getList("list"));
    FullEntity<IncompleteKey> partial1 = entity3.getEntity("partial1");
    FullEntity<IncompleteKey> partial2 = entity3.getEntity("partial2");
    assertEquals(PARTIAL_ENTITY2, partial1);
    assertEquals(ENTITY2, partial2);
    assertEquals(ValueType.BOOLEAN, entity3.getValue("bool").getType());
    assertEquals(LAT_LNG_VALUE, entity3.getValue("latLng"));
    assertEquals(EMPTY_LIST_VALUE, entity3.getValue("emptyList"));
    assertEquals(8, entity3.getNames().size());
    assertFalse(entity3.contains("bla"));
    try {
        entity3.getString("str");
        fail("Expecting a failure");
    } catch (DatastoreException expected) {
    // expected - no such property
    }
    assertFalse(result.hasNext());
}

Example 7 with DatastoreException

use of com.google.cloud.datastore.DatastoreException in project google-cloud-java by GoogleCloudPlatform.

the class ITDatastoreTest method testAddEntity.

@Test
public void testAddEntity() {
    List<Entity> keys = DATASTORE.fetch(ENTITY1.getKey(), ENTITY3.getKey());
    assertEquals(ENTITY1, keys.get(0));
    assertNull(keys.get(1));
    assertEquals(2, keys.size());
    try {
        DATASTORE.add(ENTITY1);
        fail("Expecting a failure");
    } catch (DatastoreException expected) {
    // expected;
    }
    List<Entity> entities = DATASTORE.add(ENTITY3, PARTIAL_ENTITY1, PARTIAL_ENTITY2);
    assertEquals(ENTITY3, DATASTORE.get(ENTITY3.getKey()));
    assertEquals(ENTITY3, entities.get(0));
    assertEquals(PARTIAL_ENTITY1.getNames(), entities.get(1).getNames());
    assertEquals(PARTIAL_ENTITY1.getKey().getAncestors(), entities.get(1).getKey().getAncestors());
    assertNotNull(DATASTORE.get(entities.get(1).getKey()));
    assertEquals(PARTIAL_ENTITY2.getNames(), entities.get(2).getNames());
    assertEquals(PARTIAL_ENTITY2.getKey().getAncestors(), entities.get(2).getKey().getAncestors());
    assertNotNull(DATASTORE.get(entities.get(2).getKey()));
    for (Entity entity : entities) {
        DATASTORE.delete(entity.getKey());
    }
}

Example 8 with DatastoreException

use of com.google.cloud.datastore.DatastoreException in project jetty.project by eclipse.

the class GCloudSessionDataStore method doStore.

/** 
     * @see org.eclipse.jetty.server.session.AbstractSessionDataStore#doStore(java.lang.String, org.eclipse.jetty.server.session.SessionData, long)
     */
@Override
public void doStore(String id, SessionData data, long lastSaveTime) throws Exception {
    if (LOG.isDebugEnabled())
        LOG.debug("Writing session {} to DataStore", data.getId());
    Entity entity = entityFromSession(data, makeKey(id, _context));
    //attempt the update with exponential back-off
    int backoff = getBackoffMs();
    int attempts;
    for (attempts = 0; attempts < getMaxRetries(); attempts++) {
        try {
            _datastore.put(entity);
            return;
        } catch (DatastoreException e) {
            if (e.isRetryable()) {
                if (LOG.isDebugEnabled())
                    LOG.debug("Datastore put retry {} waiting {}ms", attempts, backoff);
                try {
                    Thread.currentThread().sleep(backoff);
                } catch (InterruptedException x) {
                }
                backoff *= 2;
            } else {
                throw e;
            }
        }
    }
    //retries have been exceeded
    throw new UnwriteableSessionDataException(id, _context, null);
}

Example 9 with DatastoreException

use of com.google.cloud.datastore.DatastoreException in project jetty.project by eclipse.

the class GCloudSessionDataStore method sessionFromEntity.

/**
     * Generate SessionData from an Entity retrieved from gcloud datastore.
     * @param entity the entity
     * @return the session data
     * @throws Exception if unable to get the entity
     */
protected SessionData sessionFromEntity(Entity entity) throws Exception {
    if (entity == null)
        return null;
    final AtomicReference<SessionData> reference = new AtomicReference<SessionData>();
    final AtomicReference<Exception> exception = new AtomicReference<Exception>();
    Runnable load = new Runnable() {

        public void run() {
            try {
                //turn an Entity into a Session
                String id = entity.getString(_model.getId());
                String contextPath = entity.getString(_model.getContextPath());
                String vhost = entity.getString(_model.getVhost());
                long accessed = entity.getLong(_model.getAccessed());
                long lastAccessed = entity.getLong(_model.getLastAccessed());
                long createTime = entity.getLong(_model.getCreateTime());
                long cookieSet = entity.getLong(_model.getCookieSetTime());
                String lastNode = entity.getString(_model.getLastNode());
                long lastSaved = 0;
                //for compatibility with previously saved sessions, lastSaved may not be present
                try {
                    lastSaved = entity.getLong(_model.getLastSaved());
                } catch (DatastoreException e) {
                    LOG.ignore(e);
                }
                long expiry = entity.getLong(_model.getExpiry());
                long maxInactive = entity.getLong(_model.getMaxInactive());
                Blob blob = (Blob) entity.getBlob(_model.getAttributes());
                SessionData session = newSessionData(id, createTime, accessed, lastAccessed, maxInactive);
                session.setLastNode(lastNode);
                session.setContextPath(contextPath);
                session.setVhost(vhost);
                session.setCookieSet(cookieSet);
                session.setLastNode(lastNode);
                session.setLastSaved(lastSaved);
                session.setExpiry(expiry);
                try (ClassLoadingObjectInputStream ois = new ClassLoadingObjectInputStream(blob.asInputStream())) {
                    Object o = ois.readObject();
                    session.putAllAttributes((Map<String, Object>) o);
                } catch (Exception e) {
                    throw new UnreadableSessionDataException(id, _context, e);
                }
                reference.set(session);
            } catch (Exception e) {
                exception.set(e);
            }
        }
    };
    //ensure this runs in the context classloader
    _context.run(load);
    if (exception.get() != null)
        throw exception.get();
    return reference.get();
}

Example 10 with DatastoreException

use of com.google.cloud.datastore.DatastoreException in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method addSingleEntity.

/**
   * Example of adding a single entity.
   */
// [TARGET add(FullEntity)]
// [VARIABLE "my_key_name"]
public void addSingleEntity(String keyName) {
    // [START addSingleEntity]
    Key key = datastore.newKeyFactory().setKind("MyKind").newKey(keyName);
    Entity.Builder entityBuilder = Entity.newBuilder(key);
    entityBuilder.set("propertyName", "value");
    Entity entity = entityBuilder.build();
    try {
        datastore.add(entity);
    } catch (DatastoreException ex) {
        if ("ALREADY_EXISTS".equals(ex.getReason())) {
        // entity.getKey() already exists
        }
    }
// [END addSingleEntity]
}