From dd7e6e57167f2e2dd61d5e9560d2659ccff6f408 Mon Sep 17 00:00:00 2001
From: Joan Sanchez <joan@verdnatura.es>
Date: Tue, 16 Jun 2020 12:27:17 +0200
Subject: [PATCH] 2300 - WaitForHealthy

---
 db/docker.js | 42 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/db/docker.js b/db/docker.js
index 849cf182c..e3f105971 100644
--- a/db/docker.js
+++ b/db/docker.js
@@ -39,7 +39,8 @@ module.exports = class Docker {
 
         let runChown = process.platform != 'linux';
 
-        let container = await this.execP(`docker run --env RUN_CHOWN=${runChown} -d ${dockerArgs} salix-db`);
+        const healthCheck = `--health-cmd='mysqladmin ping --silent'`;
+        const container = await this.execP(`docker run ${healthCheck} --env RUN_CHOWN=${runChown} -d ${dockerArgs} salix-db`);
         this.id = container.stdout;
 
         try {
@@ -53,7 +54,7 @@ module.exports = class Docker {
                 this.dbConf.port = netSettings.Ports['3306/tcp'][0]['HostPort'];
             }
 
-            if (runChown) await this.wait();
+            await this.waitForHealthy();
         } catch (err) {
             if (this.isRandom)
                 await this.rm();
@@ -88,6 +89,43 @@ module.exports = class Docker {
         }
     }
 
+    waitForHealthy() {
+        return new Promise((resolve, reject) => {
+            let interval = 100;
+            let elapsedTime = 0;
+            let maxInterval = 4 * 60 * 1000;
+
+            log('Waiting for MySQL init process...');
+
+            async function checker() {
+                elapsedTime += interval;
+                let status;
+
+                try {
+                    let result = await this.execP(`docker inspect -f "{{.State.Health.Status}}" ${this.id}`);
+                    status = result.stdout.trimEnd();
+                } catch (err) {
+                    return reject(new Error(err.message));
+                }
+
+                if (status == 'unhealthy')
+                    return reject(new Error('Docker exited, please see the docker logs for more info'));
+
+                if (status == 'healthy') {
+                    log('MySQL process ready.');
+                    return resolve();
+                }
+
+                if (elapsedTime >= maxInterval)
+                    reject(new Error(`MySQL not initialized whithin ${elapsedTime / 1000} secs`));
+                else
+                    setTimeout(bindedChecker, interval);
+            }
+            let bindedChecker = checker.bind(this);
+            bindedChecker();
+        });
+    }
+
     wait() {
         return new Promise((resolve, reject) => {
             const mysql = require('mysql2');