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• LocalUploadApi.java

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io.proximax.xpx.service.local.LocalUploadApi Maven / Gradle / Ivy

/*
 * Copyright 2018 ProximaX Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * Proximax P2P Storage REST API
 * Proximax P2P Storage REST API
 *
 * OpenAPI spec version: v0.0.1
 * Contact: [email protected]
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */

package io.proximax.xpx.service.local;

import com.google.flatbuffers.FlatBufferBuilder;
import io.ipfs.api.IPFS;
import io.ipfs.api.MerkleNode;
import io.ipfs.api.NamedStreamable;
import io.ipfs.multihash.Multihash;
import io.proximax.xpx.exceptions.ApiException;
import io.proximax.xpx.model.PublishResult;
import io.proximax.xpx.service.intf.UploadApi;
import io.proximax.xpx.service.model.buffers.ResourceHashMessage;
import io.proximax.xpx.utils.ContentTypeUtils;
import io.proximax.xpx.utils.StringUtils;
import org.apache.commons.codec.binary.Base64;
import org.pmw.tinylog.Logger;

import java.io.File;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import static org.bouncycastle.util.encoders.Hex.encode;


/**
 * The Class LocalUploadApi.
 */
@SuppressWarnings("unchecked")

public class LocalUploadApi implements UploadApi {

	/** The proximax ifps connection. */
	private final IPFS proximaxIfpsConnection;

	/**
	 * Instantiates a new local upload api.
	 *
	 * @param proximaxIfpsConnection the proximax ifps connection
	 */
	public LocalUploadApi(final IPFS proximaxIfpsConnection) {
		this.proximaxIfpsConnection = proximaxIfpsConnection;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * io.proximax.xpx.service.intf.UploadApi#deletePinnedContent(java.lang.
	 * String)
	 */
	@Override
	public String deletePinnedContent(String multihash) throws ApiException, IOException {
		return proximaxIfpsConnection.pin.rm(Multihash.fromBase58(multihash)).toString();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * io.proximax.xpx.service.intf.UploadApi#uploadBytesBinary(io.proximax.xpx.model
	 * .UploadBytesBinaryRequestParameter)
	 */
	@Override
	public byte[] uploadBytesBinary(byte[] binaryData, String name, String contentType, String keywords, String metadata)
			throws IOException, NoSuchAlgorithmException {

		final String nameOrDefault = StringUtils.isEmpty(name) ? String.valueOf(Math.abs(System.currentTimeMillis())) : name;
		final String contentTypeOrDetected = ContentTypeUtils.contentTypeLookup(contentType, binaryData);
		final String keywordsOrDefault = keywords == null ? "" : keywords;
		final String metadataOrDefault = metadata == null ? "" : metadata;

		PublishResult spfsBlockResult = exposeAndPinBinary(nameOrDefault, binaryData);
		String multiHashString = spfsBlockResult.getMerkleNode().get(0).hash.toBase58();

		FlatBufferBuilder builder = new FlatBufferBuilder(1024);
		MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");

		int digest = builder.createString(new String(encode(messageDigest.digest(binaryData))));
		int hash = builder.createString(multiHashString);
		int keywordsRes = builder.createString(keywordsOrDefault);
		int metadataRes = builder.createString(metadataOrDefault);
		int nameint = builder.createString(nameOrDefault);
		int type = builder.createString(contentTypeOrDetected);

		ResourceHashMessage.startResourceHashMessage(builder);
		ResourceHashMessage.addDigest(builder, digest);
		ResourceHashMessage.addHash(builder, hash);
		ResourceHashMessage.addKeywords(builder, keywordsRes);
		ResourceHashMessage.addMetaData(builder, metadataRes);
		ResourceHashMessage.addName(builder, nameint);
		ResourceHashMessage.addTimestamp(builder, System.currentTimeMillis());
		ResourceHashMessage.addType(builder, type);
		builder.finish(ResourceHashMessage.endResourceHashMessage(builder));

		return Base64.encodeBase64(builder.sizedByteArray());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * io.proximax.xpx.service.intf.UploadApi#uploadText(io.proximax.xpx.model.
	 * UploadTextRequestParameter)
	 */
	@Override
	public byte[] uploadText(byte[] textInBytes, String name, String contentType, String encoding, String keywords, String metadata)
			throws IOException, NoSuchAlgorithmException {

		final String nameOrDefault = StringUtils.isEmpty(name) ? String.valueOf(Math.abs(System.currentTimeMillis())) : name;
		final String contentTypeOrDefault = StringUtils.isEmpty(contentType) ? "text/plain" : contentType;
		final String encodingOrDefault = StringUtils.isEmpty(encoding) ? "UTF-8" : encoding;
		final String keywordsOrDefault = keywords == null ? "" : keywords;
		final String metadataOrDefault = metadata == null ? "" : metadata;


		PublishResult spfsBlockResult = exposeAndPinBinary(nameOrDefault, textInBytes);
		String multiHashString = spfsBlockResult.getMerkleNode().get(0).hash.toBase58();

		FlatBufferBuilder builder = new FlatBufferBuilder(1024);
		MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");

		int digest = builder.createString(new String(encode(messageDigest.digest(textInBytes))));

		int hash = builder.createString(multiHashString);
		int keywordsRes = builder.createString(keywordsOrDefault);
		int metadataRes = builder.createString(metadataOrDefault);
		int nameint = builder.createString(nameOrDefault);
		int type = builder.createString(contentTypeOrDefault);

		ResourceHashMessage.startResourceHashMessage(builder);
		ResourceHashMessage.addDigest(builder, digest);
		ResourceHashMessage.addHash(builder, hash);
		ResourceHashMessage.addKeywords(builder, keywordsRes);
		ResourceHashMessage.addMetaData(builder, metadataRes);
		ResourceHashMessage.addName(builder, nameint);
		ResourceHashMessage.addTimestamp(builder, System.currentTimeMillis());
		ResourceHashMessage.addType(builder, type);
		builder.finish(ResourceHashMessage.endResourceHashMessage(builder));

		// return base64 encoded bytearray.
		return Base64.encodeBase64(builder.sizedByteArray());
	}


	/* (non-Javadoc)
	 * @see io.proximax.xpx.service.intf.UploadApi#uploadPath(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
	 */
	public byte[] uploadPath(String path, String name, String keywords, String metadata) throws NoSuchAlgorithmException {

		final String nameOrDefault = StringUtils.isEmpty(name) ? String.valueOf(Math.abs(System.currentTimeMillis())) : name;
		final String keywordsOrDefault = keywords == null ? "" : keywords;
		final String metadataOrDefault = metadata == null ? "" : metadata;
		final String contentType = "Directory";

		// Expose/load the file.
		PublishResult spfsBlockResult = exposeAndPinPath(path);

		String multiHashString = "";

		Iterator merkleNodeIter = spfsBlockResult.getMerkleNode().iterator();

		// log it.
		spfsBlockResult.getMerkleNode().stream().forEach(n -> {
			Logger.error(n);
		});

		while (merkleNodeIter.hasNext()) {
			MerkleNode merkleNode = (MerkleNode) merkleNodeIter.next();
			String namePath = "/" + merkleNode.name.get();
			if (namePath.equals(path)) {

				multiHashString = merkleNode.hash.toBase58();
				break;
			}
		}

		if (multiHashString == null || multiHashString.equals("")) {

			multiHashString = spfsBlockResult.getMerkleNode().get(spfsBlockResult.getMerkleNode().size() - 1).hash
					.toBase58();
		}

		// Serialize
		FlatBufferBuilder builder = new FlatBufferBuilder(1024);
		MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");

		int digest = builder.createString(new String(encode(messageDigest.digest(path.getBytes()))));

		int hash = builder.createString(multiHashString);
		int keywordsRes = builder.createString(keywordsOrDefault);
		int metadataRes = builder.createString(metadataOrDefault);
		int nameint = builder.createString(nameOrDefault);
		int type = builder.createString(contentType);

		ResourceHashMessage.startResourceHashMessage(builder);
		ResourceHashMessage.addDigest(builder, digest);
		ResourceHashMessage.addHash(builder, hash);
		ResourceHashMessage.addKeywords(builder, keywordsRes);
		ResourceHashMessage.addMetaData(builder, metadataRes);
		ResourceHashMessage.addName(builder, nameint);
		ResourceHashMessage.addTimestamp(builder, System.currentTimeMillis());
		ResourceHashMessage.addType(builder, type);
		builder.finish(ResourceHashMessage.endResourceHashMessage(builder));

		// return base64 encoded bytearray.
		return Base64.encodeBase64(builder.sizedByteArray());
	}

	/**
	 * Expose and pin binary.
	 *
	 * @param name
	 *            the name
	 * @param binary
	 *            the binary
	 * @return the publish result
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 * @throws ApiException
	 *             the api exception
	 */
	private PublishResult exposeAndPinBinary(String name, byte[] binary) throws IOException {
		PublishResult result = new PublishResult();
		NamedStreamable.ByteArrayWrapper byteArrayWrapper = new NamedStreamable.ByteArrayWrapper(name, binary);
		List node = proximaxIfpsConnection.add(byteArrayWrapper);
		List pinned = proximaxIfpsConnection.pin.add(node.get(0).hash);
		result.setMerkleNode(node);
		result.setMultiHash(pinned);
		return result;
	}

	
	/**
	 * Expose and pin path.
	 *
	 * @param path the path
	 * @return the publish result
	 */
	public PublishResult exposeAndPinPath(String path) {
		PublishResult result = new PublishResult();
		try {
			List streamables = new ArrayList();
			NamedStreamable.FileWrapper fileWrapper = new NamedStreamable.FileWrapper(new File(path));
			streamables
					.add(new NamedStreamable.DirWrapper(new File(path).getAbsolutePath(), fileWrapper.getChildren()));
			// recursePathToBeAdded(streamables, path);
			List merkleNode = proximaxIfpsConnection.add(streamables, true, false);
			result.setMerkleNode(merkleNode);
		} catch (Exception e) {
			Logger.error("Error on decoding NEM Transaction Message." + e.getMessage());
		}
		return result;

	}

	/**
	 * Recurse path to be added.
	 *
	 * @param streamables
	 *            the streamables
	 * @param path
	 *            the path
	 */
	private void recursePathToBeAdded(List streamables, String path) {
		File folder = new File(path);
		File[] listOfFiles = folder.listFiles();
		for (File file : listOfFiles) {
			if (file.isDirectory()) {
				NamedStreamable.FileWrapper fileWrapper = new NamedStreamable.FileWrapper(file);
				streamables.add(new NamedStreamable.DirWrapper(file.getAbsolutePath(), fileWrapper.getChildren()));
				recursePathToBeAdded(streamables, file.getAbsolutePath());
			} else {
				streamables.add(new NamedStreamable.FileWrapper(file));
			}
		}
	}

	/**
	 * Expose binary.
	 *
	 * @param name
	 *            the name
	 * @param binary
	 *            the binary
	 * @return the publish result
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 * @throws ApiException
	 *             the api exception
	 */
	private PublishResult exposeBinary(String name, byte[] binary) throws IOException {
		PublishResult result = new PublishResult();
		NamedStreamable.ByteArrayWrapper byteArrayWrapper = new NamedStreamable.ByteArrayWrapper(name, binary);
		List node = proximaxIfpsConnection.add(byteArrayWrapper);
		result.setMerkleNode(node);
		return result;
	}

	/**
	 * Gets the binary hash only.
	 *
	 * @param name
	 *            the name
	 * @param binary
	 *            the binary
	 * @return the binary hash only
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 * @throws ApiException
	 *             the api exception
	 */
	private PublishResult getBinaryHashOnly(String name, byte[] binary) throws IOException {
		PublishResult result = null;

		// store it in ipfs
		result = new PublishResult();
		NamedStreamable.ByteArrayWrapper byteArrayWrapper = new NamedStreamable.ByteArrayWrapper(name, binary);
		List node = proximaxIfpsConnection.add(byteArrayWrapper, false, true);
		result.setMerkleNode(node);

		return result;
	}

	/**
	 * Grab dirs.
	 *
	 * @param path
	 *            the path
	 * @param node
	 *            the node
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 * @throws ApiException
	 *             the api exception
	 */
	private void grabDirs(String path, List node) throws IOException {
		File[] directories = new File(path).listFiles(File::isDirectory);
		for (File f : directories) {
			NamedStreamable.FileWrapper fileWrapper = new NamedStreamable.FileWrapper(f);
			NamedStreamable.DirWrapper dirWrapper = new NamedStreamable.DirWrapper(f.getName().toString(),
					fileWrapper.getChildren());
			node.addAll(proximaxIfpsConnection.add(dirWrapper, true, false));
			grabDirs(f.getAbsolutePath(), node);
		}
	}

}