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Make some parameters configurable over env #90

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Make some parameters configurable over env #90

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38 changes: 24 additions & 14 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -55,14 +55,10 @@ app.use(function(req, res, next){
next();
}));
});

//Handle all paths
app.all('*', (req, res) => {

if(process.env.OVERRIDE_RESPONSE_BODY_FILE_PATH){
// Path is relative to current directory
res.sendFile(process.env.OVERRIDE_RESPONSE_BODY_FILE_PATH, { root : __dirname});
return;
}


const echo = {
path: req.path,
Expand Down Expand Up @@ -90,17 +86,17 @@ app.all('*', (req, res) => {
let newHeaders = {...req.headers};

// req.headers is in lowercase, processed, deduplicated. req.rawHeaders is not.
// Match on the preserved case of the header name, populate newHeaders with preserved case and processed value.
// Match on the preserved case of the header name, populate newHeaders with preserved case and processed value.
for (let i = 0; i < req.rawHeaders.length; i += 2) {
let preservedHeaderName = req.rawHeaders[i];
if (preservedHeaderName == preservedHeaderName.toLowerCase()) { continue; }

newHeaders[preservedHeaderName] = req.header(preservedHeaderName);
delete newHeaders[preservedHeaderName.toLowerCase()];
}
echo.headers = newHeaders;
}


//Add client certificate details to the output, if present
//This only works if `requestCert` is true when starting the server.
Expand Down Expand Up @@ -135,17 +131,22 @@ app.all('*', (req, res) => {
}

//Set the status code to what the user wants
const setResponseStatusCode = parseInt(req.headers["x-set-response-status-code"] || req.query["x-set-response-status-code"], 10)
const setResponseStatusCode = parseInt(req.headers["x-set-response-status-code"] || req.query["x-set-response-status-code"] || process.env.RESPONSE_STATUS_CODE, 10)
if (100 <= setResponseStatusCode && setResponseStatusCode < 600) {
res.status(setResponseStatusCode)
}

//Delay the response for a user defined time
const sleepTime = parseInt(req.headers["x-set-response-delay-ms"] || req.query["x-set-response-delay-ms"], 0)
const sleepTime = parseInt(req.headers["x-set-response-delay-ms"]
|| req.query["x-set-response-delay-ms"]
|| process.env.RESPONSE_DELAY_MS
|| "0")
sleep(sleepTime).then(() => {

//Set the response content type to what the user wants
const setResponseContentType = req.headers["x-set-response-content-type"] || req.query["x-set-response-content-type"];
const setResponseContentType = req.headers["x-set-response-content-type"]
|| req.query["x-set-response-content-type"]
|| process.env.RESPONSE_CONTENT_TYPE;

if(setResponseContentType){
res.contentType(setResponseContentType);
Expand All @@ -169,8 +170,17 @@ app.all('*', (req, res) => {
if (process.env.ECHO_BACK_TO_CLIENT != undefined && process.env.ECHO_BACK_TO_CLIENT == "false"){
res.end();
}
//Ability to send an content of file as response body
else if (process.env.OVERRIDE_RESPONSE_BODY_FILE_PATH){
// Path is relative to current directory
res.sendFile(process.env.OVERRIDE_RESPONSE_BODY_FILE_PATH, { root : __dirname});
}
//Ability to send an content of environment variable as response body
else if (process.env.OVERRIDE_RESPONSE_BODY){
res.send(process.env.OVERRIDE_RESPONSE_BODY);
}
//Ability to send just the request body in the response, nothing else
else if ("response_body_only" in req.query && req.query["response_body_only"] == "true") {
else if ((req.query["response_body_only"] === "true") || (process.env.RESPONSE_BODY_ONLY === "true")) {
res.send(req.body);
}
//Normal behavior, send everything back
Expand Down Expand Up @@ -238,4 +248,4 @@ function shutDown(){
process.exit()
});
});
}
}