Examples with Part io.micronaut.http.annotation.Part used on opensource projects

Example 1 with Part

use of io.micronaut.http.annotation.Part in project micronaut-gcp by micronaut-projects.

the class GooglePartBinder method bind.

@Override
public BindingResult<T> bind(ArgumentConversionContext<T> context, HttpRequest<?> source) {
    if (source instanceof GoogleFunctionHttpRequest) {
        GoogleFunctionHttpRequest<?> googleRequest = (GoogleFunctionHttpRequest<?>) source;
        final com.google.cloud.functions.HttpRequest nativeRequest = googleRequest.getNativeRequest();
        final Argument<T> argument = context.getArgument();
        final String partName = context.getAnnotationMetadata().stringValue(Part.class).orElse(argument.getName());
        final HttpPart part = nativeRequest.getParts().get(partName);
        if (part != null) {
            final Class<T> type = argument.getType();
            if (HttpPart.class.isAssignableFrom(type)) {
                // noinspection unchecked
                return () -> (Optional<T>) Optional.of(part);
            } else if (String.class.isAssignableFrom(type)) {
                try (BufferedReader reader = part.getReader()) {
                    final String content = IOUtils.readText(reader);
                    return () -> (Optional<T>) Optional.of(content);
                } catch (IOException e) {
                    throw new HttpStatusException(HttpStatus.BAD_REQUEST, "Unable to read part [" + partName + "]: " + e.getMessage());
                }
            } else if (byte[].class.isAssignableFrom(type)) {
                try (InputStream is = part.getInputStream()) {
                    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
                    int nRead;
                    byte[] data = new byte[16384];
                    while ((nRead = is.read(data, 0, data.length)) != -1) {
                        buffer.write(data, 0, nRead);
                    }
                    final byte[] content = buffer.toByteArray();
                    return () -> (Optional<T>) Optional.of(content);
                } catch (IOException e) {
                    throw new HttpStatusException(HttpStatus.BAD_REQUEST, "Unable to read part [" + partName + "]: " + e.getMessage());
                }
            } else {
                final MediaType contentType = part.getContentType().map(MediaType::new).orElse(null);
                if (contentType != null) {
                    final MediaTypeCodec codec = codecRegistry.findCodec(contentType, type).orElse(null);
                    if (codec != null) {
                        try (InputStream inputStream = part.getInputStream()) {
                            final T content = codec.decode(argument, inputStream);
                            return () -> (Optional<T>) Optional.of(content);
                        } catch (IOException e) {
                            throw new HttpStatusException(HttpStatus.BAD_REQUEST, "Unable to read part [" + partName + "]: " + e.getMessage());
                        }
                    }
                }
            }
        }
    }
    return BindingResult.UNSATISFIED;
}