refactor and ensure no timer related race conditions

docker/scripts/runner.js

@@ -1,8 +1,9 @@
 const { spawn, exec } = require('child_process')
 
 async function run(){
-  let backendComposeCommand = 'npm run test'
+  let composeCommand = 'npm run test'
   const isTest = process.env.NODE_ENV === 'test'
+  const exampleName = process.env.EXAMPLE
 
 
   let command = exec(
@@ -15,7 +16,15 @@ async function run(){
   )
   await waitForCommandStatusWithStdout(command, {onError: ()=>new Error('could not create dev-docker-data-cache directories')})
 
+  if(isTest){
+    await startTests({composeCommand})
+  } 
+  else if(exampleName === 'multi-client'){
+    await startMultiClientExample()
+  }
+}
 
+async function startTests({composeCommand}){
   const child2 = spawn(
     `docker-compose`,  
     [
@@ -33,7 +42,7 @@ async function run(){
     { 
       env: {
         ...process.env,
-        COMPOSE_COMMAND: backendComposeCommand
+        COMPOSE_COMMAND: composeCommand
       },
       stdio: 'inherit'
     }
@@ -42,7 +51,75 @@ async function run(){
   child2.on("exit", (code, signal)=>{
     process.exit(code)
   })
+}
 
+
+async function startMultiClientExample(){
+  const projectName = 'safe-redis-leader-multi-client-example'
+  const child1 = spawn(
+    `docker-compose`,  
+    [
+      "--project-name",
+      projectName,
+      "--project-directory",
+      "./docker/compose",
+      "-f",
+      "./docker/compose/redis.yml",
+      "up", 
+      // "--build"
+    ], 
+    { 
+      env: {
+        ...process.env
+      },
+      stdio: 'inherit'
+    }
+  );
+  
+  child1.on("exit", (code, signal)=>{
+    process.exit(code)
+  })
+
+  const totalClients = 2
+
+  for(let i = 0; i < totalClients; i++){
+    await startSingleClient({
+      projectName: `${projectName}-${i}`, 
+      id: i,
+      composeCommand: `SCRIPT_CLIENT_ID=${i} npm run example:multi-client`
+    })
+  }
+
+}
+
+async function startSingleClient({composeCommand, projectName, id}){
+  const child1 = spawn(
+    `docker-compose`,  
+    [
+      "--project-name",
+      projectName,
+      "--project-directory",
+      "./docker/compose",
+      "-f",
+      "./docker/compose/test.yml",
+      "up", 
+      // "--build"
+    ], 
+    { 
+      env: {
+        ...process.env,
+        COMPOSE_COMMAND: composeCommand,
+        PUBLIC_NODE_DEBUG_PORT: `922${id}`, 
+        CLIENT_PREFIX_ID: `client-${id}-`
+      },
+
+      stdio: 'inherit'
+    }
+  );
+  
+  child1.on("exit", (code, signal)=>{
+    process.exit(code)
+  })
 }