workaround incorrect workflow status (#4044)

.github/workflows/ufuzz.yml

@@ -4,8 +4,9 @@ on:
   schedule:
     - cron: "*/5 * * * *"
 env:
+  BASE_URL: https://api.github.com/repos/${{ github.repository }}
   CAUSE: ${{ github.event_name }}
-  DATA_URL: https://api.github.com/repos/${{ github.repository }}/actions/workflows/ufuzz.yml/runs?status=
+  TOKEN: ${{ github.token }}
 jobs:
   ufuzz:
     strategy:
@@ -19,15 +20,6 @@ jobs:
       - name: Perform fuzzing
         shell: bash
         run: |
-          if [[ $CAUSE != "schedule" ]]; then
-            PERIOD=1800000
-          elif (( `curl -s ${DATA_URL}queued | tr -d '\040\011\012\015' | awk -F"queued" '{print NF-1}'` > 3 )); then
-            echo "too many jobs in queue - exiting..."
-            exit
-          else
-            RUNNING=`curl -s ${DATA_URL}in_progress | tr -d '\040\011\012\015' | awk -F"in_progress" '{print NF-1}'`
-            PERIOD=$(( 3600000 * 10 / (RUNNING > 5 ? RUNNING : 5) ))
-          fi
           git clone --branch v1.5.4 --depth 1 https://github.com/jasongin/nvs.git ~/.nvs
           while ! timeout 60 bash -c '. ~/.nvs/nvs.sh add 8 && nvs use 8'; do
             cd ~/.nvs
@@ -44,4 +36,12 @@ jobs:
           npm config set update-notifier false
           npm --version
           while !(npm install); do echo "'npm install' failed - retrying..."; done
-          node test/ufuzz/job $PERIOD
+          PERIOD=1800000
+          if [[ $CAUSE == "schedule" ]]; then
+            PERIOD=$(( 3600 * `node test/ufuzz/actions $BASE_URL $TOKEN` ))
+          fi
+          if (( $PERIOD == 0 )); then
+            echo "too many jobs in queue - exiting..."
+          else
+            node test/ufuzz/job $PERIOD
+          fi

test/ufuzz/actions.js

@@ -0,0 +1,50 @@
+require("../../tools/exit");
+
+var get = require("https").get;
+var parse = require("url").parse;
+var base = process.argv[2];
+var token = process.argv[3];
+
+function read(url, callback) {
+    var options = parse(url);
+    options.headers = {
+        "Authorization": "Token " + token,
+        "User-Agent": "UglifyJS",
+    };
+    get(options, function(response) {
+        var chunks = [];
+        response.setEncoding("utf8");
+        response.on("data", function(chunk) {
+            chunks.push(chunk);
+        }).on("end", function() {
+            callback(JSON.parse(chunks.join("")));
+        });
+    });
+}
+
+var in_progress = 0, queued = 0;
+process.on("beforeExit", function() {
+    if (queued > 3) {
+        process.stdout.write("0");
+    } else {
+        process.stdout.write(Math.min(1000 * 20 / in_progress, 1500).toFixed(0));
+    }
+});
+read(base + "/actions/workflows/ufuzz.yml/runs", function(reply) {
+    reply.workflow_runs.filter(function(workflow) {
+        return /^(in_progress|queued|)$/.test(workflow.status);
+    }).forEach(function(workflow) {
+        read(workflow.jobs_url, function(reply) {
+            reply.jobs.forEach(function(job) {
+                switch (job.status) {
+                  case "in_progress":
+                    in_progress++;
+                    break;
+                  case "queued":
+                    queued++;
+                    break;
+                }
+            });
+        });
+    });
+});