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Proximax P2P File Storage Java SDK (NIS1 Compatible)
/*
* 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 io.ipfs.api.IPFS;
import io.ipfs.multihash.Multihash;
import io.proximax.xpx.exceptions.ApiException;
import io.proximax.xpx.exceptions.MessageDigestNotMatchException;
import io.proximax.xpx.service.NemTransactionApi;
import io.proximax.xpx.service.intf.DownloadApi;
import io.proximax.xpx.service.model.buffers.ResourceHashMessage;
import org.apache.commons.codec.binary.Base64;
import org.nem.core.model.TransferTransaction;
import org.nem.core.model.ncc.TransactionMetaDataPair;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.ExecutionException;
/**
* The Class LocalDownloadApi.
*/
public class LocalDownloadApi implements DownloadApi {
/** The proximax transaction api. */
private final NemTransactionApi nemTransactionApi;
/** The proximax ifps connection. */
private final IPFS proximaxIfpsConnection;
/**
* Instantiates a new local download api.
*
* @param nemTransactionApi the proximax transaction api
* @param proximaxIfpsConnection the proximax ifps connection
*/
public LocalDownloadApi(NemTransactionApi nemTransactionApi, IPFS proximaxIfpsConnection) {
this.nemTransactionApi = nemTransactionApi;
this.proximaxIfpsConnection = proximaxIfpsConnection;
}
/* (non-Javadoc)
* @see io.proximax.xpx.service.intf.DownloadApi#downloadUsingDataHashUsingGET(java.lang.String)
*/
@Override
public byte[] downloadUsingDataHashUsingGET(String hash) throws ApiException, IOException {
return proximaxIfpsConnection.cat(Multihash.fromBase58(hash));
}
/* (non-Javadoc)
* @see io.proximax.xpx.service.intf.DownloadApi#downloadTextUsingGET(java.lang.String, java.lang.String)
*/
@Override
public byte[] downloadTextUsingGET(String nemHash, String transferMode) throws ApiException, IOException, InterruptedException, ExecutionException {
TransactionMetaDataPair transactionMetaDataPair = nemTransactionApi.getTransaction(nemHash);
TransferTransaction transfer = ((TransferTransaction) transactionMetaDataPair.getEntity());
ResourceHashMessage resourceMessage = ResourceHashMessage.getRootAsResourceHashMessage(ByteBuffer.wrap(Base64.decodeBase64(transfer.getMessage().getEncodedPayload())));
return proximaxIfpsConnection.cat(Multihash.fromBase58(resourceMessage.hash()));
}
/* (non-Javadoc)
* @see io.proximax.xpx.service.intf.DownloadApi#downloadBinaryUsingGET(java.lang.String, java.lang.String)
*/
@Override
public byte[] downloadBinaryUsingGET(String nemHash, String transferMode) throws ApiException, IOException, InterruptedException, ExecutionException {
TransactionMetaDataPair transactionMetaDataPair = nemTransactionApi.getTransaction(nemHash);
TransferTransaction transfer = ((TransferTransaction) transactionMetaDataPair.getEntity());
ResourceHashMessage resourceMessage = ResourceHashMessage.getRootAsResourceHashMessage(ByteBuffer.wrap(Base64.decodeBase64(transfer.getMessage().getEncodedPayload())));
return proximaxIfpsConnection.cat(Multihash.fromBase58(resourceMessage.hash()));
}
/* (non-Javadoc)
* @see io.proximax.xpx.service.intf.DownloadApi#downloadFileUsingGET(java.lang.String, java.lang.String)
*/
@Override
public byte[] downloadFileUsingGET(String nemHash, String transferMode) throws ApiException, IOException, InterruptedException, ExecutionException {
TransactionMetaDataPair transactionMetaDataPair = nemTransactionApi.getTransaction(nemHash);
TransferTransaction transfer = ((TransferTransaction) transactionMetaDataPair.getEntity());
ResourceHashMessage resourceMessage = ResourceHashMessage.getRootAsResourceHashMessage(ByteBuffer.wrap(Base64.decodeBase64(transfer.getMessage().getEncodedPayload())));
return proximaxIfpsConnection.cat(Multihash.fromBase58(resourceMessage.hash()));
}
/**
* Load resource.
*
* @param resourceMessage the resource message
* @return the byte[]
* @throws IOException Signals that an I/O exception has occurred.
* @throws ApiException the api exception
*/
public byte[] loadResource(ResourceHashMessage resourceMessage) throws IOException, ApiException {
return proximaxIfpsConnection.cat(Multihash.fromBase58(resourceMessage.hash()));
}
/**
* Validate digest.
*
* @param binaryData the binary data
* @param digest the digest
* @throws NoSuchAlgorithmException the no such algorithm exception
* @throws MessageDigestNotMatchException the message digest not match exception
*/
private void validateDigest(byte[] binaryData, String digest)
throws NoSuchAlgorithmException, MessageDigestNotMatchException {
MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");
String binaryDigest = new String(org.bouncycastle.util.encoders.Hex.encode(messageDigest.digest(binaryData)));
if (!binaryDigest.equals(digest)) {
throw new MessageDigestNotMatchException(
"Message Digest Validation Failed. Resource requested seems to be corrupted.");
}
}
/* (non-Javadoc)
* @see io.proximax.xpx.DownloadApiInterface#downloadStreamUsingHashUsingPOST(java.lang.String)
*/
// @Override
// public byte[] downloadStreamUsingHashUsingPOST(String hash) throws ApiException, IOException {
// return XpxSdkGlobalConstants.getProximaxConnection().cat(Multihash.fromBase58(hash));
// }
}