Node js - Synchronous execution of functions through loop
0
I have a code like the following
function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
}).then(function (response) {
console.log(response);
retVal = true;
return retVal;
}).catch(function (error) {
console.log(error);
});
}
In this, response is needed for callWebsocket function with a array's value, that should be achieved through loop. But callWebSocket function gets called before the response comes due to the asynchronous nature of node js. But I have a use case to use server side scripting and I choose node js. Any help to execute the functions synchronously with the loop in place will save me.
javascript node.js server-side-scripting
asked Nov 23 '18 at 7:52
venkatvenkat
183111
add a comment |
0
I have a code like the following
function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
}).then(function (response) {
console.log(response);
retVal = true;
return retVal;
}).catch(function (error) {
console.log(error);
});
}
In this, response is needed for callWebsocket function with a array's value, that should be achieved through loop. But callWebSocket function gets called before the response comes due to the asynchronous nature of node js. But I have a use case to use server side scripting and I choose node js. Any help to execute the functions synchronously with the loop in place will save me.
javascript node.js server-side-scripting
asked Nov 23 '18 at 7:52
venkatvenkat
183111
1
HavecallApireturn aPromiseand thenawaitit
– CertainPerformance
Nov 23 '18 at 7:52
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Hard to say without knowing whatcallApiis currently
– CertainPerformance
Nov 23 '18 at 7:55
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00
add a comment |
0
0
0
I have a code like the following
function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
}).then(function (response) {
console.log(response);
retVal = true;
return retVal;
}).catch(function (error) {
console.log(error);
});
}
In this, response is needed for callWebsocket function with a array's value, that should be achieved through loop. But callWebSocket function gets called before the response comes due to the asynchronous nature of node js. But I have a use case to use server side scripting and I choose node js. Any help to execute the functions synchronously with the loop in place will save me.
javascript node.js server-side-scripting
asked Nov 23 '18 at 7:52
venkatvenkat
183111
I have a code like the following
function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
}).then(function (response) {
console.log(response);
retVal = true;
return retVal;
}).catch(function (error) {
console.log(error);
});
}
In this, response is needed for callWebsocket function with a array's value, that should be achieved through loop. But callWebSocket function gets called before the response comes due to the asynchronous nature of node js. But I have a use case to use server side scripting and I choose node js. Any help to execute the functions synchronously with the loop in place will save me.
javascript node.js server-side-scripting
javascript node.js server-side-scripting
asked Nov 23 '18 at 7:52
venkatvenkat
183111
asked Nov 23 '18 at 7:52
venkatvenkat
183111
edited Nov 23 '18 at 7:59
venkat
asked Nov 23 '18 at 7:52
venkatvenkat
183111
asked Nov 23 '18 at 7:52
venkatvenkat
183111
asked Nov 23 '18 at 7:52
venkatvenkat
183111
183111
1
HavecallApireturn aPromiseand thenawaitit
– CertainPerformance
Nov 23 '18 at 7:52
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Hard to say without knowing whatcallApiis currently
– CertainPerformance
Nov 23 '18 at 7:55
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00
add a comment |
1
HavecallApireturn aPromiseand thenawaitit
– CertainPerformance
Nov 23 '18 at 7:52
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Hard to say without knowing whatcallApiis currently
– CertainPerformance
Nov 23 '18 at 7:55
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00
1
1
Have
callApi return a Promise and then await it– CertainPerformance
Nov 23 '18 at 7:52
Have
callApi return a Promise and then await it– CertainPerformance
Nov 23 '18 at 7:52
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Hard to say without knowing what
callApi is currently– CertainPerformance
Nov 23 '18 at 7:55
Hard to say without knowing what
callApi is currently– CertainPerformance
Nov 23 '18 at 7:55
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00
add a comment |
1 Answer
1
active
oldest
votes
2
You need to modify the callApi method a bit. Try this:
async function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = await callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
return axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
});
}
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
You need to modify the callApi method a bit. Try this:
async function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = await callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
return axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
});
}
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
add a comment |
2
You need to modify the callApi method a bit. Try this:
async function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = await callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
return axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
});
}
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
add a comment |
2
2
2
You need to modify the callApi method a bit. Try this:
async function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = await callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
return axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
});
}
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
You need to modify the callApi method a bit. Try this:
async function getData()
{
for(var i=0; i<someLength; i++)
{
if(i===0)
{
response = await callApi(someValue[i]);
}
else if(i===1)
{
responseInsert = callWebSocket(response, someValue[i]);
}
}
}
function callApi(insertData)
{
return axios({
method: 'post',
url: 'http://localhost:1130/services/request',
data: insertData,
headers: { 'content-type': 'application/xml;charset=utf-8' }
});
}
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
answered Nov 23 '18 at 8:03
FacePalmFacePalm
2,78632432
2,78632432
add a comment |
add a comment |
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1
Have
callApireturn aPromiseand thenawaitit– CertainPerformance
Nov 23 '18 at 7:52
Can you please provide a sample code? - @CertainPerformance
– venkat
Nov 23 '18 at 7:54
Hard to say without knowing what
callApiis currently– CertainPerformance
Nov 23 '18 at 7:55
Updated - Using axios, I think it already returns a promise.- @CertainPerformance
– venkat
Nov 23 '18 at 8:00
wouldnt a simple callback work for you? var myCallback = function(data) { console.log('got data: '+data); }; var usingItNow = function(callback) { callback('get it?'); };
– MThiele
Nov 23 '18 at 8:00