Examples with Struct com.google.cloud.spanner.Struct used on opensource projects

Example 11 with Struct

use of com.google.cloud.spanner.Struct in project google-cloud-java by GoogleCloudPlatform.

the class ITTransactionTest method userExceptionPreventsCommit.

@Test
public void userExceptionPreventsCommit() {
    class UserException extends Exception {

        UserException(String message) {
            super(message);
        }
    }
    final String key = uniqueKey();
    TransactionCallable<Void> callable = new TransactionCallable<Void>() {

        @Override
        public Void run(TransactionContext transaction) throws UserException {
            transaction.buffer(Mutation.newInsertOrUpdateBuilder("T").set("K").to(key).build());
            throw new UserException("User failure");
        }
    };
    try {
        client.readWriteTransaction().run(callable);
        fail("Expected user exception");
    } catch (SpannerException e) {
        assertThat(e.getErrorCode()).isEqualTo(ErrorCode.UNKNOWN);
        assertThat(e.getMessage()).contains("User failure");
        assertThat(e.getCause()).isInstanceOf(UserException.class);
    }
    Struct row = client.singleUse(TimestampBound.strong()).readRow("T", Key.of(key), Arrays.asList("K"));
    assertThat(row).isNull();
}

Example 12 with Struct

use of com.google.cloud.spanner.Struct in project google-cloud-java by GoogleCloudPlatform.

the class ITTransactionTest method readAbort.

@Test
public void readAbort() throws InterruptedException {
    final String key1 = uniqueKey();
    final String key2 = uniqueKey();
    client.write(Arrays.asList(Mutation.newInsertBuilder("T").set("K").to(key1).set("V").to(0).build(), Mutation.newInsertBuilder("T").set("K").to(key2).set("V").to(1).build()));
    final CountDownLatch t1Started = new CountDownLatch(1);
    final CountDownLatch t1Done = new CountDownLatch(1);
    final CountDownLatch t2Running = new CountDownLatch(1);
    final CountDownLatch t2Done = new CountDownLatch(1);
    // Thread 1 performs a read before notifying that it has started and allowing
    // thread 2 to start.  This ensures that it establishes a senior lock priority relative to
    // thread 2.  It then waits for thread 2 to read, so that both threads have shared locks on
    // key1, before continuing to commit; the act of committing means that thread 1's lock is
    // upgraded and thread 2's transaction is aborted.  When thread 1 is done, thread 2 tries a
    // second read, which will abort.  Both threads will mask SpannerExceptions to ensure that
    // the implementation does not require TransactionCallable to propagate them.
    Thread t1 = new Thread() {

        @Override
        public void run() {
            client.readWriteTransaction().run(new TransactionCallable<Void>() {

                @Override
                public Void run(TransactionContext transaction) throws SpannerException {
                    try {
                        Struct row = transaction.readRow("T", Key.of(key1), Arrays.asList("V"));
                        t1Started.countDown();
                        Uninterruptibles.awaitUninterruptibly(t2Running);
                        transaction.buffer(Mutation.newUpdateBuilder("T").set("K").to(key1).set("V").to(row.getLong(0) + 1).build());
                        return null;
                    } catch (SpannerException e) {
                        if (e.getErrorCode() == ErrorCode.ABORTED) {
                            assertThat(e).isInstanceOf(AbortedException.class);
                            assertThat(((AbortedException) e).getRetryDelayInMillis()).isNotEqualTo(-1L);
                        }
                        throw new RuntimeException("Swallowed exception: " + e.getMessage());
                    }
                }
            });
            t1Done.countDown();
        }
    };
    Thread t2 = new Thread() {

        @Override
        public void run() {
            client.readWriteTransaction().run(new TransactionCallable<Void>() {

                @Override
                public Void run(TransactionContext transaction) throws SpannerException {
                    try {
                        Struct r1 = transaction.readRow("T", Key.of(key1), Arrays.asList("V"));
                        t2Running.countDown();
                        Uninterruptibles.awaitUninterruptibly(t1Done);
                        Struct r2 = transaction.readRow("T", Key.of(key2), Arrays.asList("V"));
                        transaction.buffer(Mutation.newUpdateBuilder("T").set("K").to(key2).set("V").to(r1.getLong(0) + r2.getLong(0)).build());
                        return null;
                    } catch (SpannerException e) {
                        if (e.getErrorCode() == ErrorCode.ABORTED) {
                            assertThat(e).isInstanceOf(AbortedException.class);
                            assertThat(((AbortedException) e).getRetryDelayInMillis()).isNotEqualTo(-1L);
                        }
                        throw new RuntimeException("Swallowed exception: " + e.getMessage());
                    }
                }
            });
            t2Done.countDown();
        }
    };
    t1.start();
    Uninterruptibles.awaitUninterruptibly(t1Started);
    // Thread 2 will abort on the first attempt and should retry; wait for completion to confirm.
    t2.start();
    assertThat(t2Done.await(1, TimeUnit.MINUTES)).isTrue();
    // Check that both transactions effects are visible.
    assertThat(client.singleUse(TimestampBound.strong()).readRow("T", Key.of(key1), Arrays.asList("V")).getLong(0)).isEqualTo(1);
    assertThat(client.singleUse(TimestampBound.strong()).readRow("T", Key.of(key2), Arrays.asList("V")).getLong(0)).isEqualTo(2);
}

Example 13 with Struct

use of com.google.cloud.spanner.Struct in project google-cloud-java by GoogleCloudPlatform.

the class ITWriteTest method writeString.

@Test
public void writeString() {
    write(baseInsert().set("StringValue").to("V1").build());
    Struct row = readLastRow("StringValue");
    assertThat(row.isNull(0)).isFalse();
    assertThat(row.getString(0)).isEqualTo("V1");
}

Example 14 with Struct

use of com.google.cloud.spanner.Struct in project google-cloud-java by GoogleCloudPlatform.

the class ITWriteTest method writeTimestamp.

@Test
public void writeTimestamp() {
    Timestamp timestamp = Timestamp.parseTimestamp("2016-09-15T00:00:00.111111Z");
    write(baseInsert().set("TimestampValue").to(timestamp).build());
    Struct row = readLastRow("TimestampValue");
    assertThat(row.isNull(0)).isFalse();
    assertThat(row.getTimestamp(0)).isEqualTo(timestamp);
}

Example 15 with Struct

use of com.google.cloud.spanner.Struct in project google-cloud-java by GoogleCloudPlatform.

the class ITWriteTest method writeBytesArrayNull.

@Test
public void writeBytesArrayNull() {
    write(baseInsert().set("BytesArrayValue").toBytesArray(null).build());
    Struct row = readLastRow("BytesArrayValue");
    assertThat(row.isNull(0)).isTrue();
}