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