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Update asset_transfer_ledger_chaincode.js

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Standardized function names

Signed-off-by: r2roC <arturo@IBM.com>
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r2roC 2020-07-22 10:37:11 -04:00 committed by denyeart
parent c2b6fcfd3f
commit 64f280a1f3
1 changed files with 44 additions and 44 deletions
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88
asset-transfer-ledger-queries/chaincode-javascript/lib/asset_transfer_ledger_chaincode.js
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@ -5,24 +5,24 @@
// ====CHAINCODE EXECUTION SAMPLES (CLI) ================== // ====CHAINCODE EXECUTION SAMPLES (CLI) ==================
// ==== Invoke assets ==== // ==== Invoke assets ====
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["createAsset","asset1","blue","35","tom","100"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["CreateAsset","asset1","blue","35","tom","100"]}'
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["createAsset","asset2","red","50","tom","150"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["CreateAsset","asset2","red","50","tom","150"]}'
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["createAsset","asset3","blue","70","tom","200"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["CreateAsset","asset3","blue","70","tom","200"]}'
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["transferAsset","asset2","jerry"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["TransferAsset","asset2","jerry"]}'
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["transferAssetsBasedOnColor","blue","jerry"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["TransferAssetsBasedOnColor","blue","jerry"]}'
// peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["deleteAsset","asset1"]}' // peer chaincode invoke -C CHANNEL_NAME -n asset_transfer -c '{"Args":["DeleteAsset","asset1"]}'
// ==== Query assets ==== // ==== Query assets ====
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["readAsset","asset1"]}' // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["ReadAsset","asset1"]}'
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["getAssetsByRange","asset1","asset3"]}' output issue go // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["GetAssetsByRange","asset1","asset3"]}' output issue go
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["getAssetHistory","asset1"]}' // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["GetAssetHistory","asset1"]}'
// Rich Query (Only supported if CouchDB is used as state database): // Rich Query (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["queryAssetsByOwner","tom"]}' output issue // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssetsByOwner","tom"]}' output issue
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["queryAssets","{\"selector\":{\"owner\":\"tom\"}}"]}' output issue go // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssets","{\"selector\":{\"owner\":\"tom\"}}"]}' output issue go
// Rich Query with Pagination (Only supported if CouchDB is used as state database): // Rich Query with Pagination (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["queryAssetsWithPagination","{\"selector\":{\"owner\":\"tom\"}}","3",""]}' //error: invalid bookmark // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssetsWithPagination","{\"selector\":{\"owner\":\"tom\"}}","3",""]}' //error: invalid bookmark
// INDEXES TO SUPPORT COUCHDB RICH QUERIES // INDEXES TO SUPPORT COUCHDB RICH QUERIES
// //
@ -60,10 +60,10 @@
// curl -i -X POST -H "Content-Type: application/json" -d "{\"index\":{\"fields\":[{\"size\":\"desc\"},{\"docType\":\"desc\"},{\"owner\":\"desc\"}]},\"ddoc\":\"indexSizeSortDoc\", \"name\":\"indexSizeSortDesc\",\"type\":\"json\"}" http://hostname:port/myc1_assets/_index // curl -i -X POST -H "Content-Type: application/json" -d "{\"index\":{\"fields\":[{\"size\":\"desc\"},{\"docType\":\"desc\"},{\"owner\":\"desc\"}]},\"ddoc\":\"indexSizeSortDoc\", \"name\":\"indexSizeSortDesc\",\"type\":\"json\"}" http://hostname:port/myc1_assets/_index
// Rich Query with index design doc and index name specified (Only supported if CouchDB is used as state database): // Rich Query with index design doc and index name specified (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["queryAssets","{\"selector\":{\"docType\":\"asset\",\"owner\":\"tom\"}, \"use_index\":[\"_design/indexOwnerDoc\", \"indexOwner\"]}"]}' // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":\"asset\",\"owner\":\"tom\"}, \"use_index\":[\"_design/indexOwnerDoc\", \"indexOwner\"]}"]}'
// Rich Query with index design doc specified only (Only supported if CouchDB is used as state database): // Rich Query with index design doc specified only (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["queryAssets","{\"selector\":{\"docType\":{\"$eq\":\"asset\"},\"owner\":{\"$eq\":\"tom\"},\"size\":{\"$gt\":0}},\"fields\":[\"docType\",\"owner\",\"size\"],\"sort\":[{\"size\":\"desc\"}],\"use_index\":\"_design/indexSizeSortDoc\"}"]}' // peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":{\"$eq\":\"asset\"},\"owner\":{\"$eq\":\"tom\"},\"size\":{\"$gt\":0}},\"fields\":[\"docType\",\"owner\",\"size\"],\"sort\":[{\"size\":\"desc\"}],\"use_index\":\"_design/indexSizeSortDoc\"}"]}'
'use strict'; 'use strict';
@ -72,8 +72,8 @@ const { Contract } = require('fabric-contract-api');
class Chaincode extends Contract{ class Chaincode extends Contract{
// CreateAsset - create a new asset, store into chaincode state // CreateAsset - create a new asset, store into chaincode state
async createAsset(ctx, assetID, color, size, owner, appraisedValue) { async CreateAsset(ctx, assetID, color, size, owner, appraisedValue) {
const exists = await this.assetExists(ctx, assetID) const exists = await this.AssetExists(ctx, assetID)
if (exists) { if (exists) {
throw new Error(`The asset ${assetID} already exists`) throw new Error(`The asset ${assetID} already exists`)
} }
@ -97,8 +97,8 @@ class Chaincode extends Contract{
await ctx.stub.putState(colorNameIndexKey, Buffer.from('\u0000')); await ctx.stub.putState(colorNameIndexKey, Buffer.from('\u0000'));
} }
// readAsset returns the asset stored in the world state with given id. // ReadAsset returns the asset stored in the world state with given id.
async readAsset(ctx, id) { async ReadAsset(ctx, id) {
const assetJSON = await ctx.stub.getState(id); // get the asset from chaincode state const assetJSON = await ctx.stub.getState(id); // get the asset from chaincode state
if (!assetJSON || assetJSON.length === 0) { if (!assetJSON || assetJSON.length === 0) {
throw new Error(`Asset ${id} does not exist`); throw new Error(`Asset ${id} does not exist`);
@ -108,12 +108,12 @@ class Chaincode extends Contract{
} }
// delete - remove a asset key/value pair from state // delete - remove a asset key/value pair from state
async deleteAsset(ctx, id) { async DeleteAsset(ctx, id) {
if (!id) { if (!id) {
throw new Error('Asset name must not be empty'); throw new Error('Asset name must not be empty');
} }
var exists = await this.assetExists(ctx, id) var exists = await this.AssetExists(ctx, id)
if (!exists) { if (!exists) {
throw new Error(`Asset ${id} does not exist`) throw new Error(`Asset ${id} does not exist`)
} }
@ -146,7 +146,7 @@ class Chaincode extends Contract{
} }
// TransferAsset transfers a asset by setting a new owner name on the asset // TransferAsset transfers a asset by setting a new owner name on the asset
async transferAsset(ctx, assetName, newOwner) { async TransferAsset(ctx, assetName, newOwner) {
let assetAsBytes = await ctx.stub.getState(assetName); let assetAsBytes = await ctx.stub.getState(assetName);
if (!assetAsBytes || !assetAsBytes.toString()) { if (!assetAsBytes || !assetAsBytes.toString()) {
@ -174,10 +174,10 @@ class Chaincode extends Contract{
// invalidated by the committing peers if the result set has changed between endorsement // invalidated by the committing peers if the result set has changed between endorsement
// time and commit time. // time and commit time.
// Therefore, range queries are a safe option for performing update transactions based on query results. // Therefore, range queries are a safe option for performing update transactions based on query results.
async getAssetsByRange(ctx, startKey, endKey) { async GetAssetsByRange(ctx, startKey, endKey) {
let resultsIterator = await ctx.stub.getStateByRange(startKey, endKey); let resultsIterator = await ctx.stub.getStateByRange(startKey, endKey);
let results = await this.getAllResults(resultsIterator, false); let results = await this.GetAllResults(resultsIterator, false);
return JSON.stringify(results); return JSON.stringify(results);
} }
@ -189,7 +189,7 @@ class Chaincode extends Contract{
// committing peers if the result set has changed between endorsement time and commit time. // committing peers if the result set has changed between endorsement time and commit time.
// Therefore, range queries are a safe option for performing update transactions based on query results. // Therefore, range queries are a safe option for performing update transactions based on query results.
// Example: GetStateByPartialCompositeKey/RangeQuery // Example: GetStateByPartialCompositeKey/RangeQuery
async transferAssetByColor(ctx, color, newOwner) { async TransferAssetByColor(ctx, color, newOwner) {
// Query the color~name index by color // Query the color~name index by color
// This will execute a key range query on all keys starting with 'color' // This will execute a key range query on all keys starting with 'color'
let coloredAssetResultsIterator = await ctx.stub.getStateByPartialCompositeKey('color~name', [color]); let coloredAssetResultsIterator = await ctx.stub.getStateByPartialCompositeKey('color~name', [color]);
@ -213,7 +213,7 @@ class Chaincode extends Contract{
// Now call the transfer function for the found asset. // Now call the transfer function for the found asset.
// Re-use the same function that is used to transfer individual assets // Re-use the same function that is used to transfer individual assets
await this.transferAsset(ctx, returnedAssetName, newOwner); await this.TransferAsset(ctx, returnedAssetName, newOwner);
} }
} }
@ -222,32 +222,32 @@ class Chaincode extends Contract{
// and accepting a single query parameter (owner). // and accepting a single query parameter (owner).
// Only available on state databases that support rich query (e.g. CouchDB) // Only available on state databases that support rich query (e.g. CouchDB)
// Example: Parameterized rich query // Example: Parameterized rich query
async queryAssetsByOwner(ctx, owner) { async QueryAssetsByOwner(ctx, owner) {
let queryString = {}; let queryString = {};
queryString.selector = {}; queryString.selector = {};
queryString.selector.docType = 'asset'; queryString.selector.docType = 'asset';
queryString.selector.owner = owner; queryString.selector.owner = owner;
let queryResults = await this.getQueryResultForQueryString(ctx, JSON.stringify(queryString)); let queryResults = await this.GetQueryResultForQueryString(ctx, JSON.stringify(queryString));
return queryResults; //shim.success(queryResults); return queryResults; //shim.success(queryResults);
} }
// Example: Ad hoc rich query // Example: Ad hoc rich query
// queryAssets uses a query string to perform a query for assets. // QueryAssets uses a query string to perform a query for assets.
// Query string matching state database syntax is passed in and executed as is. // Query string matching state database syntax is passed in and executed as is.
// Supports ad hoc queries that can be defined at runtime by the client. // Supports ad hoc queries that can be defined at runtime by the client.
// If this is not desired, follow the queryAssetsForOwner example for parameterized queries. // If this is not desired, follow the QueryAssetsForOwner example for parameterized queries.
// Only available on state databases that support rich query (e.g. CouchDB) // Only available on state databases that support rich query (e.g. CouchDB)
async queryAssets(ctx, queryString) { async QueryAssets(ctx, queryString) {
let queryResults = await this.getQueryResultForQueryString(ctx, queryString); let queryResults = await this.GetQueryResultForQueryString(ctx, queryString);
return queryResults; return queryResults;
} }
// getQueryResultForQueryString executes the passed in query string. // GetQueryResultForQueryString executes the passed in query string.
// Result set is built and returned as a byte array containing the JSON results. // Result set is built and returned as a byte array containing the JSON results.
async getQueryResultForQueryString(ctx, queryString) { async GetQueryResultForQueryString(ctx, queryString) {
let resultsIterator = await ctx.stub.getQueryResult(queryString); let resultsIterator = await ctx.stub.getQueryResult(queryString);
let results = await this.getAllResults(resultsIterator, false); let results = await this.GetAllResults(resultsIterator, false);
return JSON.stringify(results); return JSON.stringify(results);
} }
@ -257,10 +257,10 @@ class Chaincode extends Contract{
// page size and a bookmark. // page size and a bookmark.
// The number of fetched records will be equal to or lesser than the page size. // The number of fetched records will be equal to or lesser than the page size.
// Paginated range queries are only valid for read only transactions. // Paginated range queries are only valid for read only transactions.
async getAssetsByRangeWithPagination(ctx, startKey, endKey, pageSize, bookmark) { async GetAssetsByRangeWithPagination(ctx, startKey, endKey, pageSize, bookmark) {
const { iterator, metadata } = await ctx.stub.getStateByRangeWithPagination(startKey, endKey, pageSize, bookmark); const { iterator, metadata } = await ctx.stub.getStateByRangeWithPagination(startKey, endKey, pageSize, bookmark);
const results = await this.getAllResults(iterator, false); const results = await this.GetAllResults(iterator, false);
results.ResponseMetadata = { results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count, RecordsCount: metadata.fetched_records_count,
@ -277,10 +277,10 @@ class Chaincode extends Contract{
// If this is not desired, follow the QueryAssetsForOwner example for parameterized queries. // If this is not desired, follow the QueryAssetsForOwner example for parameterized queries.
// Only available on state databases that support rich query (e.g. CouchDB) // Only available on state databases that support rich query (e.g. CouchDB)
// Paginated queries are only valid for read only transactions. // Paginated queries are only valid for read only transactions.
async queryAssetsWithPagination(ctx, queryString, pageSize, bookmark) { async QueryAssetsWithPagination(ctx, queryString, pageSize, bookmark) {
const { iterator, metadata } = await ctx.stub.getQueryResultWithPagination(queryString, pageSize, bookmark); const { iterator, metadata } = await ctx.stub.getQueryResultWithPagination(queryString, pageSize, bookmark);
const results = await this.getAllResults(iterator, false); const results = await this.GetAllResults(iterator, false);
results.ResponseMetadata = { results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count, RecordsCount: metadata.fetched_records_count,
@ -291,16 +291,16 @@ class Chaincode extends Contract{
} }
// GetAssetHistory returns the chain of custody for an asset since issuance. // GetAssetHistory returns the chain of custody for an asset since issuance.
async getAssetHistory(ctx, assetName) { async GetAssetHistory(ctx, assetName) {
let resultsIterator = await ctx.stub.getHistoryForKey(assetName); let resultsIterator = await ctx.stub.getHistoryForKey(assetName);
let results = await this.getAllResults(resultsIterator, true); let results = await this.GetAllResults(resultsIterator, true);
return JSON.stringify(results); return JSON.stringify(results);
} }
// AssetExists returns true when asset with given ID exists in world state // AssetExists returns true when asset with given ID exists in world state
async assetExists(ctx, assetName) { async AssetExists(ctx, assetName) {
// ==== Check if asset already exists ==== // ==== Check if asset already exists ====
let assetState = await ctx.stub.getState(assetName); let assetState = await ctx.stub.getState(assetName);
if ( !assetState || assetState.length === 0 ) { if ( !assetState || assetState.length === 0 ) {
@ -309,7 +309,7 @@ class Chaincode extends Contract{
return true return true
} }
async getAllResults(iterator, isHistory) { async GetAllResults(iterator, isHistory) {
let allResults = []; let allResults = [];
while (true) { while (true) {
let res = await iterator.next(); let res = await iterator.next();
@ -345,7 +345,7 @@ class Chaincode extends Contract{
} }
// InitLedger creates sample assets in the ledger // InitLedger creates sample assets in the ledger
async initLedger(ctx) { async InitLedger(ctx) {
const assets = [ const assets = [
{ {
assetID: 'asset1', assetID: 'asset1',
@ -392,7 +392,7 @@ class Chaincode extends Contract{
]; ];
for (let i = 0; i < assets.length; i++) { for (let i = 0; i < assets.length; i++) {
await this.createAsset( await this.CreateAsset(
ctx, ctx,
assets[i].assetID, assets[i].assetID,
assets[i].color, assets[i].color,