Blue/Green Refactor (#229)

* fresh new branch

* Added coverage to gitignore

Signed-off-by: Jaiveer Katariya <jaiveerkatariya@Jaiveers-MBP.lan>

* reverted package-lock.json

Signed-off-by: Jaiveer Katariya <jaiveerkatariya@Jaiveers-MBP.lan>
Co-authored-by: Jaiveer Katariya <jaiveerkatariya@Jaiveers-MBP.lan>

src/strategyHelpers/blueGreen/promote.ts

@@ -0,0 +1,81 @@
+import * as core from '@actions/core'
+
+import {Kubectl} from '../../types/kubectl'
+
+import {BlueGreenDeployment} from '../../types/blueGreenTypes'
+import {deployWithLabel, NONE_LABEL_VALUE} from './blueGreenHelper'
+
+import {validateIngresses} from './ingressBlueGreenHelper'
+import {validateServicesState} from './serviceBlueGreenHelper'
+import {validateTrafficSplitsState} from './smiBlueGreenHelper'
+
+export async function promoteBlueGreenIngress(
+   kubectl: Kubectl,
+   manifestObjects
+): Promise<BlueGreenDeployment> {
+   //checking if anything to promote
+   const {areValid, invalidIngresses} = await validateIngresses(
+      kubectl,
+      manifestObjects.ingressEntityList,
+      manifestObjects.serviceNameMap
+   )
+   if (!areValid) {
+      throw new Error(
+         `Ingresses are not in promote state: ${invalidIngresses.toString()}`
+      )
+   }
+
+   // create stable deployments with new configuration
+   const result: BlueGreenDeployment = await deployWithLabel(
+      kubectl,
+      [].concat(
+         manifestObjects.deploymentEntityList,
+         manifestObjects.serviceEntityList
+      ),
+      NONE_LABEL_VALUE
+   )
+
+   // create stable services with new configuration
+   return result
+}
+
+export async function promoteBlueGreenService(
+   kubectl: Kubectl,
+   manifestObjects
+): Promise<BlueGreenDeployment> {
+   // checking if services are in the right state ie. targeting green deployments
+   if (
+      !(await validateServicesState(kubectl, manifestObjects.serviceEntityList))
+   ) {
+      throw new Error('Found services not in promote state')
+   }
+
+   // creating stable deployments with new configurations
+   return await deployWithLabel(
+      kubectl,
+      manifestObjects.deploymentEntityList,
+      NONE_LABEL_VALUE
+   )
+}
+
+export async function promoteBlueGreenSMI(
+   kubectl: Kubectl,
+   manifestObjects
+): Promise<BlueGreenDeployment> {
+   // checking if there is something to promote
+   if (
+      !(await validateTrafficSplitsState(
+         kubectl,
+         manifestObjects.serviceEntityList
+      ))
+   ) {
+      throw Error('Not in promote state SMI')
+   }
+
+   // create stable deployments with new configuration
+   return await deployWithLabel(
+      kubectl,
+      manifestObjects.deploymentEntityList,
+      NONE_LABEL_VALUE
+   )
+}