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Server will now only try to send one response for per request #43

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Server will now only try to send one response for per request #43

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76 changes: 49 additions & 27 deletions LFS171x/fabric-material/tuna-app/controller.js
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Original file line number Diff line number Diff line change
Expand Up @@ -70,18 +70,25 @@ return{
}).then((query_responses) => {
console.log("Query has completed, checking results");
// query_responses could have more than one results if there multiple peers were used as targets
let res_msg = "";
if (query_responses && query_responses.length == 1) {
if (query_responses[0] instanceof Error) {
console.error("error from query = ", query_responses[0]);
res_msg += "error from query = ", query_responses[0];
} else {
console.log("Response is ", query_responses[0].toString());
res.json(JSON.parse(query_responses[0].toString()));
res_msg += query_responses[0].toString();
}
} else {
console.log("No payloads were returned from query");
res_msg += "\nNo payloads were returned from query."
}
res.send(res_msg);
}).catch((err) => {
console.error('Failed to query successfully :: ' + err);
if( res.headerSent === false ) {
res.send('Failed to query successfully :: ' + err);
}
});
},
add_tuna: function(req, res){
Expand Down Expand Up @@ -137,7 +144,7 @@ return{
tx_id = fabric_client.newTransactionID();
console.log("Assigning transaction_id: ", tx_id._transaction_id);

// recordTuna - requires 5 args, ID, vessel, location, timestamp,holder - ex: args: ['10', 'Hound', '-12.021, 28.012', '1504054225', 'Hansel'],
// recordTuna - requires 5 args, ID, vessel, location, timestamp,holder - ex: args: ['10', 'Hound', '-12.021, 28.012', '1504054225', 'Hansel'],
// send proposal to endorser
const request = {
//targets : --- letting this default to the peers assigned to the channel
Expand Down Expand Up @@ -225,22 +232,28 @@ return{
}
}).then((results) => {
console.log('Send transaction promise and event listener promise have completed');
let res_msg = "";
// check the results in the order the promises were added to the promise all list
if (results && results[0] && results[0].status === 'SUCCESS') {
console.log('Successfully sent transaction to the orderer.');
res.send(tx_id.getTransactionID());
} else {
console.error('Failed to order the transaction. Error code: ' + response.status);
res_msg += 'Failed to order the transaction. Error code: ' + response.status;
}

if(results && results[1] && results[1].event_status === 'VALID') {
console.log('Successfully committed the change to the ledger by the peer');
res.send(tx_id.getTransactionID());
res_msg += (tx_id.getTransactionID());
} else {
console.log('Transaction failed to be committed to the ledger due to ::'+results[1].event_status);
res_msg += 'Transaction failed to be committed to the ledger due to ::'+results[1].event_status;
}
res.send(res_msg);
}).catch((err) => {
console.error('Failed to invoke successfully :: ' + err);
if( res.headerSent === false ) {
res.send("Error: adding new tuna, check server logs.");
}
});
},
get_tuna: function(req, res){
Expand Down Expand Up @@ -294,22 +307,27 @@ return{
}).then((query_responses) => {
console.log("Query has completed, checking results");
// query_responses could have more than one results if there multiple peers were used as targets
// res_msg is a String which will be sent as the response data. If sucess will be the tx_id and if not
let res_msg = "";
if (query_responses && query_responses.length == 1) {
if (query_responses[0] instanceof Error) {
console.error("error from query = ", query_responses[0]);
res.send("Could not locate tuna")
res_msg += "error from query = ", query_responses[0] +".";

} else {
console.log("Response is ", query_responses[0].toString());
res.send(query_responses[0].toString())
res_msg += query_responses[0].toString();
}
} else {
console.log("No payloads were returned from query");
res.send("Could not locate tuna")
res_msg += "\nCould not locate tuna."
}
res.send(res_msg);
}).catch((err) => {
console.error('Failed to query successfully :: ' + err);
res.send("Could not locate tuna")
console.error('Failed to query successfully :: ' + err);
if( res.headerSent === false ) {
res.send("Could not locate tuna. Check server logs for more info.")
}
});
},
change_holder: function(req, res){
Expand Down Expand Up @@ -448,27 +466,31 @@ return{
}
}).then((results) => {
console.log('Send transaction promise and event listener promise have completed');
// check the results in the order the promises were added to the promise all list
if (results && results[0] && results[0].status === 'SUCCESS') {
console.log('Successfully sent transaction to the orderer.');
res.json(tx_id.getTransactionID())
} else {
console.error('Failed to order the transaction. Error code: ' + response.status);
res.send("Error: no tuna catch found");
}

if(results && results[1] && results[1].event_status === 'VALID') {
console.log('Successfully committed the change to the ledger by the peer');
res.json(tx_id.getTransactionID())
} else {
console.log('Transaction failed to be committed to the ledger due to ::'+results[1].event_status);
}
// String which will be sent as the response data. If sucess will be the tx_id and if not
let res_msg = "";
// check the results in the order the promises were added to the promise all list
if (results && results[0] && results[0].status === 'SUCCESS') {
console.log('Successfully sent transaction to the orderer.');
} else {
console.error('Failed to order the transaction. Error code: ' + response.status);
res_msg += "Error: no tuna catch found";
}

if(results && results[1] && results[1].event_status === 'VALID') {
console.log('Successfully committed the change to the ledger by the peer');
res_msg += tx_id.getTransactionID()
} else {
console.log('Transaction failed to be committed to the ledger due to ::'+results[1].event_status);
}
res.send(res_msg)
}).catch((err) => {
console.error('Failed to invoke successfully :: ' + err);
res.send("Error: no tuna catch found");
if( res.headerSent === false ) {
res.send("Error: no tuna catch found");
}
});

}

}
})();
})();