From c5c52242060daaefb1f257acc41bdb67b10582a7 Mon Sep 17 00:00:00 2001
From: Vaibhav Pathak <vaibhav.pathak@Vaibhavs-MacBook-Air.local>
Date: Mon, 23 Feb 2026 14:04:54 +0530
Subject: [PATCH] Shared Mysql fix

---
 .../workflow-template.yaml                    | 144 +++++++++++++++++-
 1 file changed, 140 insertions(+), 4 deletions(-)

diff --git a/environment-provisioner/workflow-template.yaml b/environment-provisioner/workflow-template.yaml
index 3d7e57a..41656ff 100644
--- a/environment-provisioner/workflow-template.yaml
+++ b/environment-provisioner/workflow-template.yaml
@@ -36,6 +36,8 @@ spec:
       value: '{}'
     - name: helmExternalParams
       value: '{}'
+    - name: sharedMysqlConfig
+      value: '[]'
   entrypoint: provision-environment
   templates:
   - inputs:
@@ -50,6 +52,7 @@ spec:
       - name: manualDependencyUrls
       - name: valuesContentEdits
       - name: helmExternalParams
+      - name: sharedMysqlConfig
     name: provision-environment
     steps:
     - - arguments:
@@ -74,6 +77,8 @@ spec:
             value: '{{inputs.parameters.valuesContentEdits}}'
           - name: helmExternalParams
             value: '{{inputs.parameters.helmExternalParams}}'
+          - name: sharedMysqlConfig
+            value: '{{inputs.parameters.sharedMysqlConfig}}'
         name: create-git-repo
         template: create-repo
     - - arguments:
@@ -104,6 +109,7 @@ spec:
       - name: manualDependencyUrls
       - name: valuesContentEdits
       - name: helmExternalParams
+      - name: sharedMysqlConfig
     name: create-repo
     script:
       command:
@@ -158,6 +164,10 @@ spec:
         {{inputs.parameters.helmExternalParams}}
         EOFPARAM
         )
+        SHARED_MYSQL_CONFIG=$(cat <<'EOFPARAM'
+        {{inputs.parameters.sharedMysqlConfig}}
+        EOFPARAM
+        )
 
         # Sanitize namespace name (replace spaces and special chars with hyphens)
         NAMESPACE=$(echo "$NAMESPACE" | tr '[:upper:]' '[:lower:]' | tr ' _' '-' | sed 's/[^a-z0-9-]//g' | sed 's/--*/-/g' | sed 's/^-//;s/-$//')
@@ -252,6 +262,91 @@ spec:
                   kubernetes.io/metadata.name: argo-workflows
         EOF
 
+        # Create shared MySQL instances
+        echo "Processing shared MySQL instances..."
+        echo "$SHARED_MYSQL_CONFIG" | jq -c '.[]' 2>/dev/null | while read -r instance; do
+          INSTANCE_NAME=$(echo "$instance" | jq -r '.instanceName')
+          VERSION=$(echo "$instance" | jq -r '.version')
+
+          if [ -z "$INSTANCE_NAME" ] || [ "$INSTANCE_NAME" = "null" ]; then
+            continue
+          fi
+
+          echo "Creating shared MySQL instance: $INSTANCE_NAME (MySQL $VERSION)"
+
+          # Build SQL to create all databases and grant permissions
+          DB_INIT_SQL="-- Auto-generated database initialization"
+          for db in $(echo "$instance" | jq -c '.databases[]'); do
+            DB_NAME=$(echo "$db" | jq -r '.databaseName')
+            SERVICE_NAME=$(echo "$db" | jq -r '.serviceName')
+            DB_INIT_SQL="${DB_INIT_SQL}
+        -- Database for ${SERVICE_NAME}
+        CREATE DATABASE IF NOT EXISTS \`${DB_NAME}\` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+        GRANT ALL PRIVILEGES ON \`${DB_NAME}\`.* TO 'mysql_user'@'%';"
+          done
+          DB_INIT_SQL="${DB_INIT_SQL}
+        FLUSH PRIVILEGES;"
+
+          # Create ArgoCD Application for shared MySQL
+          cat > "manifests/${INSTANCE_NAME}-application.yaml" <<EOF
+        apiVersion: argoproj.io/v1alpha1
+        kind: Application
+        metadata:
+          name: $NAMESPACE-$INSTANCE_NAME
+          namespace: argocd
+          labels:
+            environment: $NAMESPACE
+            provisioned-by: backstage
+            shared-mysql: "true"
+          finalizers:
+            - resources-finalizer.argocd.argoproj.io
+        spec:
+          project: default
+          source:
+            repoURL: https://charts.bitnami.com/bitnami
+            chart: mysql
+            targetRevision: "9.14.4"
+            helm:
+              values: |
+                image:
+                  tag: "$VERSION"
+                auth:
+                  rootPassword: "local-root-pass"
+                  username: "mysql_user"
+                  password: "local-mysql-pass"
+                fullnameOverride: "$INSTANCE_NAME"
+                primary:
+                  persistence:
+                    enabled: true
+                    size: 8Gi
+                  resources:
+                    requests:
+                      cpu: 250m
+                      memory: 512Mi
+                  configuration: |
+                    [mysqld]
+                    max_connections = 200
+                    character-set-server=utf8mb4
+                    collation-server=utf8mb4_unicode_ci
+                    default_authentication_plugin=mysql_native_password
+                initdbScripts:
+                  create-databases.sql: |
+        $(echo "$DB_INIT_SQL" | sed 's/^/                /')
+          destination:
+            server: https://kubernetes.default.svc
+            namespace: $NAMESPACE
+          syncPolicy:
+            automated:
+              prune: true
+              selfHeal: true
+            syncOptions:
+              - CreateNamespace=false
+              - ServerSideApply=true
+        EOF
+
+          echo "Created ArgoCD Application for $INSTANCE_NAME"
+        done
+
         # Create service manifests
         # Convert comma-separated services to space-separated for iteration
         SERVICES_LIST=$(echo "$SERVICES" | tr ',' ' ')
@@ -291,9 +386,50 @@ spec:
               # Component has Helm chart - create ArgoCD Application manifest
               echo "Creating ArgoCD Application for Helm chart: $service"
 
-              # Check dependency preferences for MySQL
-              MYSQL_ENABLED=$(echo "$DEPENDENCY_PREFS" | jq -r '.mysql // "true"')
-              echo "  MySQL enabled: $MYSQL_ENABLED"
+              # Check if this service uses a shared MySQL instance
+              SERVICE_MYSQL_INSTANCE=""
+              SERVICE_DB_NAME=""
+              SHARED_MYSQL_PARAMS=""
+              if [ -n "$SHARED_MYSQL_CONFIG" ] && [ "$SHARED_MYSQL_CONFIG" != "[]" ]; then
+                SERVICE_MYSQL_INSTANCE=$(echo "$SHARED_MYSQL_CONFIG" | jq -r ".[] | select(.databases[].serviceName == \"$service\") | .instanceName // empty" | head -1)
+                if [ -n "$SERVICE_MYSQL_INSTANCE" ]; then
+                  SERVICE_DB_NAME=$(echo "$SHARED_MYSQL_CONFIG" | jq -r ".[] | .databases[] | select(.serviceName == \"$service\") | .databaseName")
+                fi
+              fi
+
+              if [ -n "$SERVICE_MYSQL_INSTANCE" ]; then
+                # Service uses shared MySQL - disable bundled MySQL
+                echo "  Service $service will use shared MySQL: $SERVICE_MYSQL_INSTANCE (database: $SERVICE_DB_NAME)"
+                MYSQL_ENABLED="false"
+
+                # Add external database configuration to Helm parameters
+                # Note: mysql.enabled is already set to "false" via MYSQL_ENABLED variable
+                SHARED_MYSQL_PARAMS="
+                - name: externalDatabase.host
+                  value: \"$SERVICE_MYSQL_INSTANCE\"
+                - name: externalDatabase.port
+                  value: \"3306\"
+                - name: externalDatabase.database
+                  value: \"$SERVICE_DB_NAME\"
+                - name: externalDatabase.username
+                  value: \"mysql_user\"
+                - name: externalDatabase.password
+                  value: \"local-mysql-pass\"
+                - name: database.host
+                  value: \"$SERVICE_MYSQL_INSTANCE\"
+                - name: database.port
+                  value: \"3306\"
+                - name: database.name
+                  value: \"$SERVICE_DB_NAME\"
+                - name: database.username
+                  value: \"mysql_user\"
+                - name: database.password
+                  value: \"local-mysql-pass\""
+              else
+                # Original behavior - check dependency preferences for MySQL
+                MYSQL_ENABLED=$(echo "$DEPENDENCY_PREFS" | jq -r '.mysql // "true"')
+                echo "  MySQL enabled: $MYSQL_ENABLED"
+              fi
 
               # Process dependency URL mappings
               DEPENDENCY_URL_PARAMS=""
@@ -422,7 +558,7 @@ spec:
                 - name: httpRoute.parentRefs[0].sectionName
                   value: "https"
                 - name: httpRoute.hostnames[0]
-                  value: "$HTTPROUTE_HOST"$DEPENDENCY_URL_PARAMS$CUSTOM_HELM_PARAMS
+                  value: "$HTTPROUTE_HOST"$DEPENDENCY_URL_PARAMS$CUSTOM_HELM_PARAMS$SHARED_MYSQL_PARAMS
           destination:
             server: https://kubernetes.default.svc
             namespace: $NAMESPACE