Backup/Restore SQL Server using Kopia Artifacts (#1188)

* Added mssql blueprint using kopiaSnapshot as output

* updating kando command with kopia snapshot

* fixing kopia path while restoring

* tar/untar using kando streaming

* review fixes

examples/stable/mssql/README.md

@@ -60,6 +60,8 @@ kind: Deployment
 metadata:
   name: mssql-deployment
   namespace: sqlserver
+  labels:
+    app: mssql
 spec:
   replicas: 1
   selector:

examples/stable/mssql/blueprint-v2/mssql-blueprint.yaml

@@ -0,0 +1,88 @@
+apiVersion: cr.kanister.io/v1alpha1
+kind: Blueprint
+metadata:
+  name: mssql-blueprint
+actions:
+  backup:
+    outputArtifacts:
+      mssqlCloudDump:
+        kopiaSnapshot: "{{ .Phases.dumpToObjectStore.Output.kopiaOutput }}"
+    phases:
+      - func: KubeTask
+        name: dumpToObjectStore
+        objects:
+          mssql:
+            kind: Secret
+            name: '{{ index .Object.metadata.labels "app" }}'
+            namespace: '{{ .Deployment.Namespace }}'
+        args:
+          image: ghcr.io/kanisterio/mssql-tools:0.71.0
+          command:
+            - bash
+            - -o
+            - errexit
+            - -o
+            - pipefail
+            - -c
+            - |
+              kopiaPath="backup.tar.gz"
+              root_password="{{ index .Phases.dumpToObjectStore.Secrets.mssql.Data "SA_PASSWORD" | toString }}"
+              root_uname="sa"
+              mssql_pod="{{ index .Deployment.Namespace }}/{{ index .Deployment.Pods 0 }}"
+              server_name="{{ index .Deployment.Name }}.{{index .Deployment.Namespace}}.svc.cluster.local"
+              databases=$(/opt/mssql-tools/bin/sqlcmd -S ${server_name} -U ${root_uname} -P ${root_password} -Q "SET NOCOUNT ON; SELECT name FROM sys.databases WHERE name NOT IN ('master','model','msdb','tempdb')" -b -s "," -h -1)
+              for database in $databases; do /opt/mssql-tools/bin/sqlcmd -S ${server_name} -U ${root_uname} -P ${root_password} -Q "backup database $database to disk = '/tmp/backup/$database.bak' with format;"; done
+              kubectl cp ${mssql_pod}:/tmp/backup /tmp/backup
+              tar zcvf - -C /tmp/ backup | kando location push --profile '{{ toJson .Profile }}' --path "${kopiaPath}" --output-name "kopiaOutput" -
+              kubectl exec -it {{ index .Deployment.Pods 0 }} -n {{ index .Deployment.Namespace }} -- rm -r /tmp/backup
+  restore:
+    inputArtifactNames:
+      - mssqlCloudDump
+    phases:
+      - func: KubeTask
+        name: restoreFromObjectStore
+        objects:
+          mssql:
+            kind: Secret
+            name: '{{ index .Object.metadata.labels "app" }}'
+            namespace: '{{ .Deployment.Namespace }}'
+        args:
+          image: ghcr.io/kanisterio/mssql-tools:0.71.0
+          command:
+            - bash
+            - -o
+            - errexit
+            - -o
+            - pipefail
+            - -c
+            - |
+              kopiaPath="backup.tar.gz"
+              kopia_snap='{{ .ArtifactsIn.mssqlCloudDump.KopiaSnapshot }}'
+              root_password="{{ index .Phases.restoreFromObjectStore.Secrets.mssql.Data "SA_PASSWORD" | toString }}"
+              root_uname="sa"
+              mssql_pod="{{ index .Deployment.Namespace }}/{{ index .Deployment.Pods 0 }}"
+              server_name="{{ index .Deployment.Name }}.{{ index .Deployment.Namespace }}.svc.cluster.local"
+              kando location pull --profile '{{ toJson .Profile }}' --path "${kopiaPath}" --kopia-snapshot ${kopia_snap} - | tar zxvf - -C /tmp/
+              kubectl cp /tmp/backup ${mssql_pod}:/tmp/backup
+              backup_files=$(ls /tmp/backup)
+              for script in $backup_files; do database="$(cut -d'.' -f1 <<<"$script")"; /opt/mssql-tools/bin/sqlcmd -S ${server_name} -U ${root_uname} -P ${root_password} -Q "restore database $database from disk = '/tmp/backup/$script' with replace"; done
+              kubectl exec -it {{ index .Deployment.Pods 0 }} -n {{ index .Deployment.Namespace }} -- rm -r /tmp/backup
+  delete:
+    inputArtifactNames:
+      - mssqlCloudDump
+    phases:
+      - func: KubeTask
+        name: deleteFromBlobStore
+        args:
+          image: ghcr.io/kanisterio/mssql-tools:0.71.0
+          command:
+            - bash
+            - -o
+            - errexit
+            - -o
+            - pipefail
+            - -c
+            - |
+              kopiaPath="backup.tar.gz"
+              kopia_snap='{{ .ArtifactsIn.mssqlCloudDump.KopiaSnapshot }}'
+              kando location delete --profile '{{ toJson .Profile }}' --path ${kopiaPath} --kopia-snapshot "${kopia_snap}"