Examples with EventContext org.ballerinalang.nativeimpl.io.events.EventContext used on opensource projects

Example 11 with EventContext

use of org.ballerinalang.nativeimpl.io.events.EventContext in project ballerina by ballerina-lang.

the class WriteCharacters method execute.

/**
 * Writes characters to a given file.
 * <p>
 * {@inheritDoc}
 */
@Override
public void execute(Context context, CallableUnitCallback callback) {
    BStruct channel = (BStruct) context.getRefArgument(CHAR_CHANNEL_INDEX);
    String content = context.getStringArgument(CONTENT_INDEX);
    long startOffset = context.getIntArgument(START_OFFSET_INDEX);
    CharacterChannel characterChannel = (CharacterChannel) channel.getNativeData(IOConstants.CHARACTER_CHANNEL_NAME);
    EventContext eventContext = new EventContext(context, callback);
    IOUtils.write(characterChannel, content, (int) startOffset, eventContext, WriteCharacters::writeResponse);
}

Example 12 with EventContext

use of org.ballerinalang.nativeimpl.io.events.EventContext in project ballerina by ballerina-lang.

the class WriteTextRecord method execute.

/**
 * Writes records to a given file.
 * <p>
 * {@inheritDoc}
 */
@Override
public void execute(Context context, CallableUnitCallback callback) {
    BStruct channel = (BStruct) context.getRefArgument(RECORD_CHANNEL_INDEX);
    BStringArray content = (BStringArray) context.getRefArgument(CONTENT_INDEX);
    DelimitedRecordChannel delimitedRecordChannel = (DelimitedRecordChannel) channel.getNativeData(IOConstants.TXT_RECORD_CHANNEL_NAME);
    EventContext eventContext = new EventContext(context, callback);
    IOUtils.write(delimitedRecordChannel, content, eventContext, WriteTextRecord::writeResponse);
}

Example 13 with EventContext

use of org.ballerinalang.nativeimpl.io.events.EventContext in project ballerina by ballerina-lang.

the class WriteTextRecord method writeResponse.

/**
 * Callback response received after the bytes are written.
 *
 * @param result the response received.
 * @return the result context.
 */
private static EventResult writeResponse(EventResult<Integer, EventContext> result) {
    BStruct errorStruct = null;
    EventContext eventContext = result.getContext();
    Context context = eventContext.getContext();
    CallableUnitCallback callback = eventContext.getCallback();
    Throwable error = eventContext.getError();
    if (null != error) {
        errorStruct = IOUtils.createError(context, error.getMessage());
    }
    context.setReturnValues(errorStruct);
    callback.notifySuccess();
    return result;
}

Example 14 with EventContext

use of org.ballerinalang.nativeimpl.io.events.EventContext in project ballerina by ballerina-lang.

the class CloseCharacterChannel method closeResponse.

private static EventResult closeResponse(EventResult<Boolean, EventContext> result) {
    BStruct errorStruct = null;
    EventContext eventContext = result.getContext();
    Context context = eventContext.getContext();
    CallableUnitCallback callback = eventContext.getCallback();
    Throwable error = eventContext.getError();
    if (null != error) {
        errorStruct = IOUtils.createError(context, error.getMessage());
    }
    context.setReturnValues(errorStruct);
    callback.notifySuccess();
    return result;
}

Example 15 with EventContext

use of org.ballerinalang.nativeimpl.io.events.EventContext in project ballerina by ballerina-lang.

the class IOUtils method read.

/**
 * <p>
 * Reads bytes from a channel and will obtain the response.
 * </p>
 * <p>
 * This operation will be blocking.
 * </p>
 *
 * @param channel channel the bytes should be read from.
 * @param content byte [] which will hold the content which is read.
 * @param context context obtained from the native function.
 * @return the number of bytes read.
 * @throws InterruptedException errors which occur if the thread is interrupted.
 * @throws ExecutionException   errors which occur during execution.
 */
private static int read(Channel channel, byte[] content, EventContext context) throws InterruptedException, ExecutionException {
    ReadBytesEvent event = new ReadBytesEvent(channel, content, context);
    CompletableFuture<EventResult> future = EventManager.getInstance().publish(event);
    EventResult eventResponse = future.get();
    int numberOfBytesRead = (Integer) eventResponse.getResponse();
    Throwable error = ((EventContext) eventResponse.getContext()).getError();
    if (null != error) {
        throw new ExecutionException(error);
    }
    return numberOfBytesRead;
}