com.scalar.dl.ledger.validation

Class LedgerTracer

java.lang.Object

com.scalar.dl.ledger.validation.LedgerTracer

All Implemented Interfaces:

Ledger

@ThreadSafe
public class LedgerTracer
extends java.lang.Object
implements Ledger

An implementation of Ledger that is used for validation.

Constructor Summary

Constructors

Constructor and Description
LedgerTracer(AssetScanner scanner)

Method Summary

Modifier and Type	Method and Description
java.util.Optional<Asset>	get(java.lang.String assetId) Retrieves the latest Asset entry (an asset entry with the largest age) from the ledger with the specified asset ID.
javax.json.JsonObject	getOutput(java.lang.String assetId)
java.util.Map<java.lang.String,java.lang.String>	getOutputs()
void	put(java.lang.String assetId, javax.json.JsonObject data) Creates/Appends an Asset entry to the ledger.
java.util.List<Asset>	scan(AssetFilter filter) Retrieves a list of Asset entries from the ledger with the specified AssetFilter.
void	setInput(javax.json.JsonObject input)
void	setInput(java.lang.String assetId, com.scalar.dl.ledger.statemachine.InternalAsset asset)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LedgerTracer

public LedgerTracer(AssetScanner scanner)

Method Detail

setInput

public void setInput(javax.json.JsonObject input)

setInput

public void setInput(java.lang.String assetId,
                     com.scalar.dl.ledger.statemachine.InternalAsset asset)

getOutput

public javax.json.JsonObject getOutput(java.lang.String assetId)

getOutputs

public java.util.Map<java.lang.String,java.lang.String> getOutputs()

get

public java.util.Optional<Asset> get(java.lang.String assetId)

Description copied from interface: Ledger

Retrieves the latest Asset entry (an asset entry with the largest age) from the ledger with the specified asset ID.

Specified by:

get in interface Ledger

Parameters:

assetId - an asset ID

Returns:

an Optional with the returned asset

scan

public java.util.List<Asset> scan(AssetFilter filter)

Description copied from interface: Ledger

Retrieves a list of Asset entries from the ledger with the specified AssetFilter.

Specified by:

scan in interface Ledger

Parameters:

filter - a condition to filter asset

Returns:

a list of asset entries which passed the filtering

put

public void put(java.lang.String assetId,
                javax.json.JsonObject data)

Description copied from interface: Ledger

Creates/Appends an Asset entry to the ledger. The initial entry is marked as age 0 and new entry is appended with an incremented age.

Specified by:

put in interface Ledger

Parameters:

assetId - an asset ID to create/append

data - json-formatted asset data