From 2bb32253d86944e46222b045d2da360319944300 Mon Sep 17 00:00:00 2001
From: mike12345567 <me@michaeldrury.co.uk>
Date: Thu, 18 Aug 2022 15:21:55 +0100
Subject: [PATCH] Adding in hash handling for datasource plugins.

---
 packages/server/src/integrations/index.ts         |  6 +++++-
 packages/server/src/utilities/fileSystem/index.js | 12 ++++++++++--
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/packages/server/src/integrations/index.ts b/packages/server/src/integrations/index.ts
index b9523061a4..7b730a1764 100644
--- a/packages/server/src/integrations/index.ts
+++ b/packages/server/src/integrations/index.ts
@@ -93,7 +93,11 @@ module.exports = {
     for (let plugin of plugins) {
       if (plugin.name === integration) {
         // need to use commonJS require due to its dynamic runtime nature
-        return getDatasourcePlugin(plugin.name, plugin.jsUrl)
+        return getDatasourcePlugin(
+          plugin.name,
+          plugin.jsUrl,
+          plugin.schema?.hash
+        )
       }
     }
   },
diff --git a/packages/server/src/utilities/fileSystem/index.js b/packages/server/src/utilities/fileSystem/index.js
index f937f172b5..096212864c 100644
--- a/packages/server/src/utilities/fileSystem/index.js
+++ b/packages/server/src/utilities/fileSystem/index.js
@@ -351,13 +351,20 @@ exports.extractPluginTarball = async file => {
   return { metadata, directory: path }
 }
 
-exports.getDatasourcePlugin = async (name, url) => {
+exports.getDatasourcePlugin = async (name, url, hash) => {
   if (!fs.existsSync(DATASOURCE_PATH)) {
     fs.mkdirSync(DATASOURCE_PATH)
   }
   const filename = join(DATASOURCE_PATH, name)
+  const metadataName = `${filename}.bbmetadata`
   if (fs.existsSync(filename)) {
-    return require(filename)
+    const currentHash = fs.readFileSync(metadataName, "utf8")
+    // if hash is the same return the file, otherwise remove it and re-download
+    if (currentHash === hash) {
+      return require(filename)
+    } else {
+      fs.unlinkSync(filename)
+    }
   }
   const fullUrl = checkSlashesInUrl(
     `${env.MINIO_URL}/${ObjectStoreBuckets.PLUGINS}/${url}`
@@ -366,6 +373,7 @@ exports.getDatasourcePlugin = async (name, url) => {
   if (response.status === 200) {
     const content = await response.text()
     fs.writeFileSync(filename, content)
+    fs.writeFileSync(metadataName, hash)
     require(filename)
   } else {
     throw new Error(