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Added version query string param to /blocks/signature/{signature}/data API endpoint, to allow for optional V2 block serialization (with a single combined AT states hash).

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Version can only be specified when querying unarchived blocks; archived blocks require V1 for now (and possibly V2 in the future).
This commit is contained in:
CalDescent 2022-07-04 19:57:54 +01:00
parent d7e7c1f48c
commit 6b91b0477d
1 changed files with 25 additions and 4 deletions
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29
src/main/java/org/qortal/api/resource/BlocksResource.java
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@ -114,7 +114,7 @@ public class BlocksResource {
@Path("/signature/{signature}/data")
@Operation(
summary = "Fetch serialized, base58 encoded block data using base58 signature",
description = "Returns serialized data for the block that matches the given signature",
description = "Returns serialized data for the block that matches the given signature, and an optional block serialization version",
responses = {
@ApiResponse(
description = "the block data",
@ -125,7 +125,7 @@ public class BlocksResource {
@ApiErrors({
ApiError.INVALID_SIGNATURE, ApiError.BLOCK_UNKNOWN, ApiError.INVALID_DATA, ApiError.REPOSITORY_ISSUE
})
public String getSerializedBlockData(@PathParam("signature") String signature58) {
public String getSerializedBlockData(@PathParam("signature") String signature58, @QueryParam("version") Integer version) {
// Decode signature
byte[] signature;
try {
@ -136,20 +136,41 @@ public class BlocksResource {
try (final Repository repository = RepositoryManager.getRepository()) {
// Default to version 1
if (version == null) {
version = 1;
}
// Check the database first
BlockData blockData = repository.getBlockRepository().fromSignature(signature);
if (blockData != null) {
Block block = new Block(repository, blockData);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bytes.write(Ints.toByteArray(block.getBlockData().getHeight()));
bytes.write(BlockTransformer.toBytes(block));
switch (version) {
case 1:
bytes.write(BlockTransformer.toBytes(block));
break;
case 2:
bytes.write(BlockTransformer.toBytesV2(block));
break;
default:
throw ApiExceptionFactory.INSTANCE.createException(request, ApiError.INVALID_CRITERIA);
}
return Base58.encode(bytes.toByteArray());
}
// Not found, so try the block archive
byte[] bytes = BlockArchiveReader.getInstance().fetchSerializedBlockBytesForSignature(signature, false, repository);
if (bytes != null) {
return Base58.encode(bytes);
if (version != 1) {
throw ApiExceptionFactory.INSTANCE.createCustomException(request, ApiError.INVALID_CRITERIA, "Archived blocks require version 1");
}
return Base58.encode(bytes);
}
throw ApiExceptionFactory.INSTANCE.createException(request, ApiError.BLOCK_UNKNOWN);