rate limit stuff

wiedehopf · Sep 15, 2020 · 7f1de6f · 7f1de6f
1 parent 00e2e1c
commit 7f1de6f
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Showing 2 changed files with 24 additions and 0 deletions.
diff --git a/html/early.js b/html/early.js
@@ -25,6 +25,8 @@ let replay = false;
 let rData = [];
 let StaleReceiverCount = 0;
 let pTracks = false;
+let lastTraceGet = 0;
+let traceRate = 0;
 
 let databaseFolder = "db2";
 

diff --git a/html/script.js b/html/script.js
@@ -1192,6 +1192,7 @@ function parse_history() {
  }
  //window.setInterval(refreshTableInfo, 1000);
  //window.setInterval(function() {PendingFetches--;}, 10000);
+ setInterval(decrementTraceRate, 1000);
 
  pathName = window.location.pathname;
  processURLParams();
@@ -4123,6 +4124,10 @@ function legShift(offset) {
 }
 
 function shiftTrace(offset) {
+ if (traceRate > 160) {
+ $('#leg_sel').text('Slow down! ...');
+ return;
+ }
  $('#leg_sel').text('Loading ...');
  if (traceDateString && !traceDate) {
  let numbers = traceDateString.split('-');
@@ -4446,6 +4451,11 @@ function checkFollow() {
  }
 }
 
+function decrementTraceRate() {
+ if (traceRate > 0)
+ traceRate = traceRate * 0.985 - 1;
+}
+
 function getTrace(newPlane, hex, options) {
 
  if (options.list) {
@@ -4456,6 +4466,15 @@ function getTrace(newPlane, hex, options) {
  hex = newPlane.icao;
  }
 
+ let now = new Date().getTime();
+ let backoff = 200;
+ if (!showTrace && traceRate > 100 && now < lastTraceGet + backoff) {
+ setTimeout(getTrace, lastTraceGet + backoff + 20 - now, newPlane, hex, options);
+ return;
+ }
+
+ lastTraceGet = now;
+
  let URL1 = 'data/traces/'+ hex.slice(-2) + '/trace_recent_' + hex + '.json';
  let URL2 = 'data/traces/'+ hex.slice(-2) + '/trace_full_' + hex + '.json';
  //console.log('Requesting trace: ' + hex);
@@ -4472,6 +4491,7 @@ function getTrace(newPlane, hex, options) {
  traceOpts = options;
 
  if (showTrace) {
+ traceRate += 3;
  let today = new Date();
  //console.log(today.toUTCString() + ' ' + traceDate.toUTCString());
  // use non historic traces for showTrace until 30 min after midnight
@@ -4486,6 +4506,8 @@ function getTrace(newPlane, hex, options) {
  URL1 = null;
  URL2 = 'globe_history/' + traceDateString + '/traces/' + hex.slice(-2) + '/trace_full_' + hex + '.json';
  }
+ } else {
+ traceRate += 2;
  }
  if (newPlane && (showTrace || showTraceExit)) {
  newPlane.trace = [];