diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..7b84f42
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,25 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+
+[*]
+
+# change these settings to your own preference
+indent_style = space
+indent_size = 4
+
+# we recommend you to keep these unchanged
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.json]
+indent_style = space
+indent_size = 2
diff --git a/.eslintrc b/.eslintrc
new file mode 100755
index 0000000..de48910
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,40 @@
+{
+    "root": true,
+    "env": {
+        "browser": true,
+        "es6": true
+    },
+    "parserOptions": {
+        "sourceType": "module",
+        "modules": true,
+        "ecmaFeatures": {
+            "modules": true
+        }
+    },
+    "extends": "airbnb-base",
+    "rules": {
+        "arrow-body-style": "off",
+        "arrow-parens": ["error", "always"],
+        "comma-dangle": ["error", "never"],
+        "default-case": "off",
+        "indent": ["error", 4, { "SwitchCase": 1 }],
+        "max-len": ["error", 120, {"ignoreComments": true, "ignoreTemplateLiterals": true}],
+        "no-console": 0,
+        "no-trailing-spaces": ["error"],
+        "linebreak-style": ["error", "unix"],
+        "object-curly-spacing": ["error", "never"],
+        "quotes": ["error", "single"],
+        "semi": ["error", "always"],
+        "space-before-blocks": ["error", "always"],
+        "space-before-function-paren": ["error", {
+            "anonymous": "never",
+            "named": "never",
+            "asyncArrow": "always"
+        }],
+        "import/prefer-default-export": "off",
+        "func-names": "off",
+        "no-restricted-syntax": "off",
+        "no-await-in-loop": "off"
+    },
+    "globals": {"module": true}
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7c78742
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.vscode
+node_modules
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..45a4fb7
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+8
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2443cd1
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# Hyperledger Fabric Client utils
+
+This repository consists out of a set of utilities functions which can be used to interact with chaincode on a Fabric blockchain network.
+
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..90a7b1b
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,4295 @@
+{
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..772ec8f
--- /dev/null
+++ b/package.json
@@ -0,0 +1,35 @@
+{
+  "name": "@kunstmaan/hyperledger-fabric-client-utils",
+  "version": "0.1.0",
+  "description": "Client utilities for communicating with chaincode  Hyperledger Fabric.",
+  "main": "./src/index.js",
+  "scripts": {
+    "lint": "eslint src/",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Kunstmaan/hyperledger-fabric-client-utils.git"
+  },
+  "keywords": [
+    "Chaincode",
+    "Hyperledger",
+    "Fabric"
+  ],
+  "author": "janb87",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/Kunstmaan/hyperledger-fabric-client-utils/issues"
+  },
+  "homepage": "https://github.com/Kunstmaan/hyperledger-fabric-client-utils#readme",
+  "devDependencies": {
+    "eslint": "^4.16.0",
+    "eslint-config-airbnb-base": "^12.1.0",
+    "eslint-plugin-import": "^2.8.0"
+  },
+  "dependencies": {
+    "fabric-client": "^1.1.0-preview",
+    "lodash.droprightwhile": "^4.6.0",
+    "log4js": "^2.5.2"
+  }
+}
diff --git a/src/fabric/createFabricClient.js b/src/fabric/createFabricClient.js
new file mode 100644
index 0000000..c16f69d
--- /dev/null
+++ b/src/fabric/createFabricClient.js
@@ -0,0 +1,73 @@
+const loadOrdererCert = require('./loadOrdererCert');
+const loadPeerCert = require('./loadPeerCert');
+const FabricClient = require('fabric-client');
+const {WALLET_PATH} = require('../../constants/fabric');
+const logger = require('../logging/logger').getLogger('fabric/createFabricClient');
+
+module.exports = function createFabricClient({
+    peers = [],
+    orderer = undefined,
+    channelId
+}) {
+    const options = {
+        walletPath: WALLET_PATH,
+        channelId,
+        ordererUrl: orderer ? orderer.url : undefined
+    };
+
+    const fabricClient = new FabricClient();
+    const channel = fabricClient.newChannel(channelId);
+
+    const registerPeersCertOnChannel = () => Promise.all(peers.map((peer) => {
+        return new Promise((resolve, reject) => {
+            loadPeerCert(peer)
+                .then((certOptions) => {
+                    channel.addPeer(fabricClient.newPeer(peer.url, certOptions));
+                    resolve();
+                })
+                .catch(reject);
+        });
+    }));
+
+    const registerOrdererCertOnChannel = () => new Promise((resolve, reject) => {
+        if (orderer) {
+            loadOrdererCert(orderer)
+                .then((certOptions) => {
+                    channel.addOrderer(fabricClient.newOrderer(options.ordererUrl, certOptions));
+                    resolve();
+                })
+                .catch(reject);
+        } else {
+            resolve();
+        }
+    });
+
+    return new Promise((resolve, reject) => {
+        Promise.resolve()
+            .then(registerPeersCertOnChannel)
+            .then(registerOrdererCertOnChannel)
+            .then(() => {
+                logger.info('Create a fabric client and set the wallet location');
+                return FabricClient.newDefaultKeyValueStore({path: options.walletPath});
+            })
+            .then((stateStore) => {
+                logger.info('Set fabric client crypto suite');
+
+                // assign the store to the fabric client
+                fabricClient.setStateStore(stateStore);
+                const cryptoSuite = FabricClient.newCryptoSuite();
+                // use the same location for the state store (where the users' certificate are kept)
+                // and the crypto store (where the users' keys are kept)
+                const cryptoStore = FabricClient.newCryptoKeyStore({path: options.walletPath});
+                cryptoSuite.setCryptoKeyStore(cryptoStore);
+                fabricClient.setCryptoSuite(cryptoSuite);
+
+                logger.info('Fabric client initialized');
+                resolve({fabricClient, channel});
+            })
+            .catch((err) => {
+                logger.error(`Failed to initialize channel: ${err.message}`);
+                reject(err);
+            });
+    });
+};
diff --git a/src/fabric/createPeers.js b/src/fabric/createPeers.js
new file mode 100644
index 0000000..9055047
--- /dev/null
+++ b/src/fabric/createPeers.js
@@ -0,0 +1,15 @@
+const loadPeerCert = require('./loadPeerCert');
+
+module.exports = function createPeers(fabricClient, peers) {
+    const createPeerPromises = [];
+    if (Array.isArray(peers)) {
+        peers.forEach((peer) => {
+            const createPeerPromise = Promise.resolve()
+                .then(() => loadPeerCert(peer))
+                .then((certOptions) => fabricClient.newPeer(peer.url, certOptions));
+            createPeerPromises.push(createPeerPromise);
+        });
+    }
+
+    return Promise.all(createPeerPromises);
+};
diff --git a/src/fabric/loadOrdererCert.js b/src/fabric/loadOrdererCert.js
new file mode 100644
index 0000000..efa370c
--- /dev/null
+++ b/src/fabric/loadOrdererCert.js
@@ -0,0 +1,24 @@
+const fs = require('fs');
+const {CRYPTO_PATH} = require('../../constants/fabric');
+const logger = require('../logging/logger').getLogger('fabric/loadOrdererCert');
+
+module.exports = function loadOrdererCert(orderer) {
+    return new Promise((resolve, reject) => {
+        logger.info(`Loading orderer certificate for ${orderer.cn}`);
+        if (orderer.url.indexOf('grpc://') === 0) {
+            logger.info('Oderer is running without TLS');
+            resolve();
+            return;
+        }
+        fs.readFile(`${CRYPTO_PATH}/${orderer.org}/orderers/${orderer.cn}/tlsca.combined.${orderer.cn}-cert.pem`, 'utf8', (err, ordererCert) => {
+            if (err) {
+                reject(err);
+                return;
+            }
+            resolve({
+                pem: ordererCert,
+                'ssl-target-name-override': orderer.cn
+            });
+        });
+    });
+};
diff --git a/src/fabric/loadPeerCert.js b/src/fabric/loadPeerCert.js
new file mode 100644
index 0000000..903d9d0
--- /dev/null
+++ b/src/fabric/loadPeerCert.js
@@ -0,0 +1,24 @@
+const fs = require('fs');
+const {CRYPTO_PATH} = require('../../constants/fabric');
+const logger = require('../logging/logger').getLogger('fabric/loadPeerCert');
+
+module.exports = function loadPeerCert(peer) {
+    return new Promise((resolve, reject) => {
+        logger.info(`Loading peer certificate for ${peer.cn}`);
+        if (peer.url.indexOf('grpc://') === 0) {
+            logger.info('Peer is running without TLS');
+            resolve();
+            return;
+        }
+        fs.readFile(`${CRYPTO_PATH}/${peer.org}/peers/${peer.cn}/tlsca.combined.${peer.cn}-cert.pem`, 'utf8', (err, peerCert) => {
+            if (err) {
+                reject(err);
+                return;
+            }
+            resolve({
+                pem: peerCert,
+                'ssl-target-name-override': peer.cn
+            });
+        });
+    });
+};
diff --git a/src/fabric/parseErrorMessage.js b/src/fabric/parseErrorMessage.js
new file mode 100644
index 0000000..3715e5b
--- /dev/null
+++ b/src/fabric/parseErrorMessage.js
@@ -0,0 +1,17 @@
+const logger = require('../logging/logger').getLogger('fabric/parseErrorMessage');
+
+const INVOKE_REGEX = /^.*?Calling\s+chaincode\s+Invoke\(\)\s+returned\s+error\s+response\s+(.*)\..*?$/i;
+
+module.exports = function parseErrorMessage(message) {
+    try {
+        if (INVOKE_REGEX.test(message)) {
+            const match = message.match(INVOKE_REGEX)[1];
+            const errorResponse = JSON.parse(match);
+            return Array.isArray(errorResponse) ? errorResponse[0] : errorResponse;
+        }
+    } catch (e) {
+        logger.info(`Unable to parse error details from error: ${message}.`);
+    }
+
+    return message;
+};
diff --git a/src/fabric/registerChaincodeEventListener.js b/src/fabric/registerChaincodeEventListener.js
new file mode 100644
index 0000000..5d0b5f6
--- /dev/null
+++ b/src/fabric/registerChaincodeEventListener.js
@@ -0,0 +1,80 @@
+const createFabricClient = require('./createFabricClient');
+const setUserContext = require('./setUserContext');
+const loadPeerCert = require('./loadPeerCert');
+const logger = require('../logging/logger').getLogger('fabric/registerChaincodeEventListener');
+
+function setupEventHub(peer, orderer, channelId, callback) {
+    let fabricClient = null;
+
+    return Promise.resolve()
+        .then(() => createFabricClient({peers: [peer], orderer, channelId}))
+        .then(({fabricClient: _fabricClient}) => {
+            fabricClient = _fabricClient;
+        })
+        .then(() => loadPeerCert(peer))
+        .then((peerCertOptions) => {
+            const eventHub = fabricClient.newEventHub();
+            eventHub.setPeerAddr(peer.broadcastUrl, peerCertOptions);
+
+            return setUserContext(fabricClient, peer.adminUserId)
+                .then(() => {
+                    return eventHub;
+                });
+        })
+        .then(callback)
+        .catch((error) => {
+            logger.error(error);
+            process.exit(1);
+        });
+}
+
+module.exports = function registerChaincodeEventListener({
+    peer,
+    orderer,
+    channel,
+    chaincode,
+    eventId,
+    onEvent,
+    onDisconnect,
+    timeoutForReconnect = 10 * 1000 // every 10 seconds
+}) {
+    let regId = null;
+    let eventHubMaster = null;
+    // Listening for requests and keep requests in sync
+    logger.info(`Setting up event hub for ${eventId} on ${chaincode}`);
+    const eventHubPromise = setupEventHub(peer, orderer, channel, (eventHub) => {
+        eventHubMaster = eventHub;
+        const startListening = () => {
+            logger.info(`Start listening for ${eventId} on ${chaincode}`);
+            eventHub.connect();
+            regId = eventHub.registerChaincodeEvent(
+                chaincode,
+                eventId,
+                (event) => {
+                    if (event.event_name === eventId) {
+                        logger.info(`Event received for ${eventId}`);
+                        logger.debug(event);
+                        const payload = JSON.parse(event.payload.toString('utf8'));
+                        logger.info(`Event payload ${JSON.stringify(payload)}`);
+                        onEvent(payload, eventId);
+                    }
+                }, (error) => {
+                    logger.warn(`Private Eventhub disconnected, trying to reconnect ${error}`);
+                    Promise.resolve().then(() => {
+                        return typeof onDisconnect === 'function' ? onDisconnect(error, eventId) : undefined;
+                    }).then(() => {
+                        setTimeout(startListening, timeoutForReconnect);
+                    });
+                }
+            );
+        };
+
+        startListening();
+    });
+
+    eventHubPromise.stopListening = function() {
+        eventHubMaster.unregisterChaincodeEvent(regId);
+    };
+
+    return eventHubPromise;
+};
diff --git a/src/fabric/setUserContext.js b/src/fabric/setUserContext.js
new file mode 100644
index 0000000..a47651d
--- /dev/null
+++ b/src/fabric/setUserContext.js
@@ -0,0 +1,18 @@
+const logger = require('../logging/logger').getLogger('fabric/setUserContext');
+
+module.exports = function setUserContext(fabricClient, userId) {
+    return Promise.resolve()
+        .then(() => {
+            // get the enrolled user from persistence, this user will sign all requests
+            return fabricClient.getUserContext(userId, true);
+        })
+        .then((userFromStore) => {
+            if (userFromStore && userFromStore.isEnrolled()) {
+                logger.info(`Successfully loaded ${userId} from persistence`);
+            } else {
+                throw new Error(`Failed to get ${userId}.... run registerUser.js`);
+            }
+
+            return userFromStore;
+        });
+};
diff --git a/src/index.js b/src/index.js
new file mode 100644
index 0000000..700cff1
--- /dev/null
+++ b/src/index.js
@@ -0,0 +1,7 @@
+const invoke = require('./invoke');
+const query = require('./query');
+
+module.exports = {
+    invoke,
+    query
+};
diff --git a/src/invoke.js b/src/invoke.js
new file mode 100644
index 0000000..df67c57
--- /dev/null
+++ b/src/invoke.js
@@ -0,0 +1,210 @@
+const util = require('util');
+const loadPeerCert = require('./fabric/loadPeerCert');
+const setUserContext = require('./fabric/setUserContext');
+const createFabricClient = require('./fabric/createFabricClient');
+const serializeArg = require('./utils/serializeArg');
+const parseErrorMessage = require('./fabric/parseErrorMessage');
+const logger = require('./logging/logger').getLogger('invoke');
+const dropRightWhile = require('lodash.droprightwhile');
+
+const MAX_RETRIES_EVENT_HUB = 5;
+const MAX_TIMEOUT = 30000;
+
+module.exports = function invoke({
+    chaincode,
+    channelId,
+    peers = [],
+    orderer,
+    userId,
+    maxTimeout = MAX_TIMEOUT
+}) {
+    const peersMap = {};
+    (peers || []).forEach((peer) => {
+        peersMap[peer.cn] = peer;
+    });
+    const uniquePeers = Object.values(peersMap);
+
+    if (uniquePeers.length === 0) {
+        return Promise.reject(new Error('No endorser peers provided.'));
+    }
+
+    return new Promise((resolve, reject) => {
+        let txId = null;
+        let fabricClient = null;
+        let channel = null;
+        let transactionProposalResponse = null;
+        Promise.resolve()
+            .then(() => createFabricClient({peers: uniquePeers, orderer, channelId}))
+            .then(({fabricClient: _fabricClient, channel: _channel}) => {
+                fabricClient = _fabricClient;
+                channel = _channel;
+            })
+            .then(() => setUserContext(fabricClient, userId))
+            .then(() => {
+                // get a transaction id object based on the current user assigned to fabric client
+                txId = fabricClient.newTransactionID();
+                // eslint-disable-next-line no-underscore-dangle
+                logger.info('Assigning transaction_id: ', txId._transaction_id);
+
+                const request = {
+                    chaincodeId: chaincode.id,
+                    fcn: chaincode.fcn,
+                    args: dropRightWhile(chaincode.args.map(serializeArg), (arg) => typeof arg === 'undefined'),
+                    txId
+                };
+
+                if (uniquePeers && uniquePeers.length > 0) {
+                    logger.info(`Sending transaction proposal to following endorser peers: ${uniquePeers.map((uniquePeer) => uniquePeer.url).join(', ')}`);
+                }
+
+                // send the transaction proposal to the peers
+                return channel.sendTransactionProposal(request);
+            })
+            .then((results) => {
+                let proposalError;
+                const proposalResponses = results[0];
+                const proposal = results[1];
+                let isProposalGood = false;
+                if (proposalResponses && proposalResponses[0].response) {
+                    const payload = proposalResponses[0].response.payload.toString();
+                    try {
+                        transactionProposalResponse = JSON.parse(payload);
+                    } catch (e) {
+                        // Not a json object
+                        transactionProposalResponse = payload;
+                    }
+                    if (proposalResponses[0].response.status === 200) {
+                        isProposalGood = true;
+                        logger.info('Transaction proposal was good');
+                    } else {
+                        logger.error('Transaction proposal was bad');
+                    }
+                } else if (proposalResponses && proposalResponses[0].message) {
+                    proposalError = parseErrorMessage(proposalResponses[0].message);
+                    logger.error('Transaction proposal was bad');
+                } else {
+                    logger.error('Transaction proposal was bad');
+                }
+
+                if (isProposalGood) {
+                    const peerForListening = uniquePeers[0];
+                    return loadPeerCert(peerForListening).then((peerCertOptions) => {
+                        logger.info(util.format(
+                            'Successfully sent Proposal and received ProposalResponse: Status - %s, message - "%s"',
+                            proposalResponses[0].response.status, proposalResponses[0].response.message
+                        ));
+
+                        // build up the request for the orderer to have the transaction committed
+                        const request = {
+                            proposalResponses,
+                            proposal
+                        };
+
+                        // set the transaction listener and set a timeout
+                        // if the transaction did not get committed within the timeout period,
+                        // report a TIMEOUT status
+                        const transactionIdString = txId.getTransactionID(); // Get the transaction ID string to be used by the event processing
+                        const promises = [];
+
+                        const sendPromise = channel.sendTransaction(request);
+                        promises.push(sendPromise); // we want the send transaction first, so that we know where to check status
+
+                        // get an eventhub once the fabric client has a user assigned. The user
+                        // is required bacause the event registration must be signed
+                        const eventHub = fabricClient.newEventHub();
+                        eventHub.setPeerAddr(peerForListening.broadcastUrl, peerCertOptions);
+
+                        // using resolve the promise so that result status may be processed
+                        // under the then clause rather than having the catch clause process
+                        // the status
+                        const txPromise = new Promise((txPromiseResolve, txPromiseReject) => {
+                            // In the next step we will setup an event listener to the network
+                            // For this we need to use the admin user instead of the incoming user
+                            // Otherwise we'll get a mismatch on the certificate
+                            // See https://jira.hyperledger.org/browse/FAB-6101
+                            setUserContext(fabricClient, peerForListening.adminUserId)
+                                .then(() => {
+                                    const handle = setTimeout(() => {
+                                        eventHub.disconnect();
+                                        txPromiseReject(new Error('Transaction did not complete within the allowed time'));
+                                    }, maxTimeout);
+                                    let retries = 0;
+                                    const startListening = () => {
+                                        eventHub.connect();
+                                        eventHub.registerTxEvent(transactionIdString, (tx, code) => {
+                                            // this is the callback for transaction event status
+                                            // first some clean up of event listener
+                                            clearTimeout(handle);
+                                            eventHub.unregisterTxEvent(transactionIdString);
+                                            eventHub.disconnect();
+
+                                            // now let the application know what happened
+                                            const returnStatus = {event_status: code, tx_id: transactionIdString};
+                                            if (code !== 'VALID') {
+                                                logger.error(`The transaction was invalid, code = ${code}`);
+                                                txPromiseReject(new Error(returnStatus));
+                                            } else {
+                                                // eslint-disable-next-line no-underscore-dangle
+                                                logger.info(`The transaction has been committed on peer ${eventHub._ep._endpoint.addr}`);
+                                                txPromiseResolve(returnStatus);
+                                            }
+                                        }, (err) => {
+                                            // this is the callback if something goes wrong with the event registration or processing
+                                            if (retries >= MAX_RETRIES_EVENT_HUB) {
+                                                logger.info(`The event hub was disconnected, retrying (attempt: ${retries})`);
+                                                setTimeout(startListening, 0);
+                                            } else {
+                                                txPromiseReject(new Error(`There was a problem with the eventhub: ${err} `));
+                                            }
+                                            retries += 1;
+                                        });
+                                    };
+                                    startListening();
+                                })
+                                .catch((err) => txPromiseReject(err));
+                        });
+
+                        promises.push(txPromise);
+
+                        return Promise.all(promises);
+                    });
+                }
+
+                throw proposalError ||
+                    new Error(transactionProposalResponse || 'Failed to send Proposal or receive valid response. ' +
+                    'Response null or status is not 200. exiting...');
+            })
+            .then((results) => {
+                logger.info('Send transaction promise and event listener promise have completed');
+                const errors = [];
+                let transactionSucceeded = false;
+                let commitSucceeded = false;
+                // check the results in the order the promises were added to the promise all list
+                if (results && results[0] && results[0].status === 'SUCCESS') {
+                    logger.info('Successfully sent transaction to the orderer.');
+                    transactionSucceeded = true;
+                } else {
+                    logger.error(`Failed to order the transaction.Error code: ${results.status} `);
+                    errors.push(`Failed to order the transaction.Error code: ${results.status} `);
+                }
+
+                if (results && results[1] && results[1].event_status === 'VALID') {
+                    logger.info('Successfully committed the change to the ledger by the peer');
+                    commitSucceeded = true;
+                } else {
+                    logger.info(`Transaction failed to be committed to the ledger due to: ${results[1].event_status}.`);
+                    errors.push(`Transaction failed to be committed to the ledger due to: ${results[1].event_status}.`);
+                }
+
+                if (transactionSucceeded && commitSucceeded) {
+                    resolve(transactionProposalResponse);
+                } else {
+                    reject(new Error(errors.join('\n')));
+                }
+            })
+            .catch((err) => {
+                logger.error(`Failed to invoke successfully: ${JSON.stringify(err)}`);
+                reject(err);
+            });
+    });
+};
diff --git a/src/logging/logger.js b/src/logging/logger.js
new file mode 100644
index 0000000..854007e
--- /dev/null
+++ b/src/logging/logger.js
@@ -0,0 +1,28 @@
+const log4js = require('log4js');
+
+module.exports.getLogger = (name) => {
+    const logger = log4js.getLogger(name);
+
+    // set the logging level based on the environment variable
+    const level = process.env.APP_LOGGING_LEVEL;
+    let loglevel = 'info';
+    if (typeof level === 'string') {
+        switch (level.toUpperCase()) {
+            case 'CRITICAL':
+                loglevel = 'fatal';
+                break;
+            case 'ERROR':
+                loglevel = 'error';
+                break;
+            case 'WARNING':
+                loglevel = 'warn';
+                break;
+            case 'DEBUG':
+                loglevel = 'debug';
+        }
+    }
+
+    logger.level = loglevel;
+
+    return logger;
+};
diff --git a/src/query.js b/src/query.js
new file mode 100644
index 0000000..c2132ab
--- /dev/null
+++ b/src/query.js
@@ -0,0 +1,62 @@
+const setUserContext = require('./fabric/setUserContext');
+const createFabricClient = require('./fabric/createFabricClient');
+const serializeArg = require('./utils/serializeArg');
+const logger = require('./logging/logger').getLogger('query');
+const dropRightWhile = require('lodash.droprightwhile');
+const parseErrorMessage = require('./fabric/parseErrorMessage');
+
+module.exports = function query({
+    chaincode,
+    channelId,
+    peer,
+    userId
+}) {
+    return new Promise((resolve, reject) => {
+        let fabricClient = null;
+        let channel = null;
+
+        Promise.resolve()
+            .then(() => createFabricClient({peers: [peer], channelId}))
+            .then(({fabricClient: _fabricClient, channel: _channel}) => {
+                fabricClient = _fabricClient;
+                channel = _channel;
+            })
+            .then(() => setUserContext(fabricClient, userId))
+            .then(() => {
+                const request = {
+                    chaincodeId: chaincode.id,
+                    fcn: chaincode.fcn,
+                    args: chaincode.args ? dropRightWhile(chaincode.args.map(serializeArg), (arg) => typeof arg === 'undefined') : []
+                };
+
+                // send the query proposal to the peer
+                return channel.queryByChaincode(request);
+            })
+            .then((queryResponses) => {
+                logger.info('Query has completed, checking results');
+                // query_responses could have more than one  results if there multiple peers were used as targets
+                if (queryResponses && queryResponses.length === 1) {
+                    if (queryResponses[0] instanceof Error) {
+                        logger.error('error from query = ', queryResponses[0]);
+                        reject(parseErrorMessage(queryResponses[0].message));
+                    } else {
+                        logger.info('Response is ', queryResponses[0].toString());
+                        const response = queryResponses[0].toString();
+                        try {
+                            resolve(JSON.parse(response));
+                        } catch (e) {
+                            // Not a json object
+                            resolve(response);
+                        }
+                    }
+                } else {
+                    logger.info('No payloads were returned from query');
+                    reject(new Error('No payloads were returned from query'));
+                }
+            })
+            .catch((err) => {
+                logger.error(`Failed to query successfully: ${err}`);
+                reject(err);
+            });
+    });
+};
diff --git a/src/services/baseService.js b/src/services/baseService.js
new file mode 100644
index 0000000..14fbb74
--- /dev/null
+++ b/src/services/baseService.js
@@ -0,0 +1,58 @@
+const invoke = require('../invoke');
+const query = require('../query');
+const logger = require('../logging/logger').getLogger('services/baseService');
+
+module.exports = (
+    chaincodeId,
+    getServices = () => {},
+    {
+        channelId: defaultChannelId,
+        peers: defaultPeers = [],
+        orderer: defaultOrderer
+    } = {}
+) => {
+    const setChaincodeOption = (chaincode) => {
+        const updatedChaincode = {...chaincode};
+        if (typeof chaincode.id !== 'string') {
+            updatedChaincode.id = chaincodeId;
+        }
+        if (!Array.isArray(chaincode.args)) {
+            updatedChaincode.args = [];
+        }
+
+        return updatedChaincode;
+    };
+
+    const services = getServices(
+        ({
+            chaincode, channelId = defaultChannelId, peer = defaultPeers[0], userId
+        }) => {
+            const options = {
+                chaincode: setChaincodeOption(chaincode),
+                channelId,
+                peer,
+                userId
+            };
+            logger.info(`Query options: ${JSON.stringify(options)}`);
+            return query(options);
+        },
+        ({
+            chaincode, channelId = defaultChannelId, peers = defaultPeers, orderer = defaultOrderer, userId
+        }) => {
+            const options = {
+                chaincode: setChaincodeOption(chaincode),
+                channelId,
+                peers,
+                orderer,
+                userId
+            };
+            logger.info(`Invoke options: ${JSON.stringify(options)}`);
+            return invoke(options);
+        }
+    );
+
+    return {
+        getChaincodeId: () => chaincodeId,
+        ...services
+    };
+};
diff --git a/src/utils/serializeArg.js b/src/utils/serializeArg.js
new file mode 100644
index 0000000..fac9510
--- /dev/null
+++ b/src/utils/serializeArg.js
@@ -0,0 +1,10 @@
+
+module.exports = function serializeArg(arg) {
+    if (arg instanceof Date) {
+        return `${arg.getTime()}`;
+    }
+    if (typeof arg !== 'string') {
+        return JSON.stringify(arg);
+    }
+    return arg;
+};