update asset manager readme in source branch (Azure-Samples#28)

* update source branch readme

* remove duplicate content

Author: yiliuTo

asset-manager/README.md

@@ -1,8 +1,6 @@
 # Asset Manager
-Sample project for migration tool code remediation that manages assets in cloud storage.
 
-## Current Infrastructure
-The project currently uses the following infrastructure, in [`main`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/main/asset-manager) branch:
+This [`source`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/source/asset-manager) branch of the asset-manager project is the original state before being migrated to Azure service:
 * AWS S3 for image storage, using password-based authentication (access key/secret key)
 * RabbitMQ for message queuing, using password-based authentication
 * PostgreSQL database for metadata storage, using password-based authentication
@@ -76,89 +74,14 @@ class User user
 ```
 Password-based authentication
 
-## Migrated Infrastructure
-After migration, the project will use the following Azure services, in [`expected`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/expected/asset-manager) branch:
-* Azure Blob Storage for image storage, using managed identity authentication
-* Azure Service Bus for message queuing, using managed identity authentication
-* Azure Database for PostgreSQL for metadata storage, using managed identity authentication
-
-## Migrated Architecture
-```mermaid
-flowchart TD
-
-%% Applications
-WebApp[Web Application]
-Worker[Worker Service]
-
-%% Azure Storage Components
-AzBlob[(Azure Blob Storage)]
-LocalFS[("Local File System<br/>dev only")]
-
-%% Azure Message Broker
-ServiceBus(Azure Service Bus)
-
-%% Azure Database
-AzPostgreSQL[(Azure PostgreSQL)]
-
-%% Queues
-Queue[image-processing queue]
-RetryQueue[retry queue]
-
-%% User
-User([User])
-
-%% User Flow
-User -->|Upload Image| WebApp
-User -->|View Images| WebApp
-
-%% Web App Flows
-WebApp -->|Store Original Image| AzBlob
-WebApp -->|Store Original Image| LocalFS
-WebApp -->|Send Processing Message| ServiceBus
-WebApp -->|Store Metadata| AzPostgreSQL
-WebApp -->|Retrieve Images| AzBlob
-WebApp -->|Retrieve Images| LocalFS
-WebApp -->|Retrieve Metadata| AzPostgreSQL
-
-%% Service Bus Flow
-ServiceBus -->|Push Message| Queue
-Queue -->|Processing Failed| RetryQueue
-RetryQueue -->|After 1 min delay| Queue
-Queue -->|Consume Message| Worker
-
-%% Worker Flow
-Worker -->|Download Original| AzBlob
-Worker -->|Download Original| LocalFS
-Worker -->|Upload Thumbnail| AzBlob
-Worker -->|Upload Thumbnail| LocalFS
-Worker -->|Store Metadata| AzPostgreSQL
-Worker -->|Retrieve Metadata| AzPostgreSQL
-
-%% Styling
-classDef app fill:#90caf9,stroke:#0d47a1,color:#0d47a1
-classDef storage fill:#68B3A1,stroke:#006064,color:#006064
-classDef broker fill:#B39DDB,stroke:#4527A0,color:#4527A0
-classDef db fill:#90CAF9,stroke:#1565C0,color:#1565C0
-classDef queue fill:#81C784,stroke:#2E7D32,color:#2E7D32
-classDef user fill:#ef9a9a,stroke:#b71c1c,color:#b71c1c
-
-class WebApp,Worker app
-class AzBlob,LocalFS storage
-class ServiceBus broker
-class AzPostgreSQL db
-class Queue,RetryQueue queue
-class User user
-```
-Managed identity based authentication
-
 ## Run Locally
 
-Check out the [`main`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/main/asset-manager) branch to run the current infrastructure locally:
+Check out the [`source`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/source/asset-manager) branch to run the current infrastructure locally:
 
 ```bash
 git clone https://github.com/Azure-Samples/java-migration-copilot-samples.git
 cd java-migration-copilot-samples/asset-manager
-git checkout main
+git checkout source
 ```
 
 **Prerequisites**: JDK, Docker
@@ -181,72 +104,3 @@ scripts/start.sh
 
 To stop, run `stop.cmd` or `stop.sh` in the `scripts` directory.
 
-## Run Migrated Code on Azure
-
-Check out the [`expected`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/expected/asset-manager) branch to run the migrated infrastructure on Azure:
-
-```bash
-git clone https://github.com/Azure-Samples/java-migration-copilot-samples.git
-cd java-migration-copilot-samples/asset-manager
-git checkout expected
-```
-
-**Prerequisites**: Azure CLI and you have signed in using `az login`
-
-Run the following commands to deploy the apps to Azure. This will:
-* Use Azure Blob Storage instead of S3 to store the image
-* Use Azure Service Bus instead of RabbitMQ for message queuing
-* Use Azure Database for PostgreSQL Flexible Server instead of PostgreSQL for metadata storage
-
-Windows:
-
-```batch
-scripts\deploy-to-azure.cmd -ResourceGroupName <your resource group name> -Location <your resource group location, e.g., eastus2> -Prefix <your unique resource prefix>
-```
-
-Linux:
-
-```bash
-scripts/deploy-to-azure.sh -ResourceGroupName <your resource group name> -Location <your resource group location, e.g., eastus2> -Prefix <your unique resource prefix>
-```
-
-To clean up, run `scripts\cleanup-azure-resources.cmd -ResourceGroupName <your resource group name>` or `scripts/cleanup-azure-resources.sh -ResourceGroupName <your resource group name>` for Windows and Linux, respectively.
-
-### Use GitHub Codespaces for Deployment
-
-The deployment scripts can also be executed in GitHub Codespaces, which pre-installs the necessary dependencies. Follow the steps below to deploy the apps to Azure using GitHub Codespaces:
-
-1. Open the repository in GitHub Codespaces by selecting on the **Code** button, selecting **Codespaces** tab, openining the existing codespace or selecting **Create codespace** for the target branch.
-1. The codespace will automatically open in the browser. Wait until it is ready.
-1. Navigate to the terminal in the codespace and run `az login` to sign in to Azure. Follow the instructions to complete the sign-in process.
-1. At the last step of the sign-in process, you will be asked to select a subscription and tenant. Select the appropriate subscription and tenant.
-1. Run the following commands in the terminal to deploy the apps to Azure:
-
-   ```bash
-   cd asset-manager && git pull
-   scripts/deploy-to-azure.sh -ResourceGroupName <your resource group name> -Location <your resource group location, e.g., eastus2> -Prefix <your unique resource prefix>
-   ```
-
-1. To clean up, run `scripts\cleanup-azure-resources.cmd -ResourceGroupName <your resource group name>` or `scripts/cleanup-azure-resources.sh -ResourceGroupName <your resource group name>` for Windows and Linux, respectively.
-
-## Java Migration Copilot Workshop
-
-Check out the [`workshop`](https://github.com/Azure-Samples/java-migration-copilot-samples/tree/workshop/asset-manager) branch for Java Migration Copilot workshop:
-
-```bash
-git clone https://github.com/Azure-Samples/java-migration-copilot-samples.git
-cd java-migration-copilot-samples/asset-manager
-git checkout workshop
-```
-
-Compared to the `main` branch, the `workshop` branch has additional commits that have already migrated the code for **Web Application** with custom code remediation, including:
-* Azure Blob Storage for image storage, using managed identity authentication
-* Azure Service Bus for message queuing, using managed identity authentication
-
-The remaining targets of the workshop are:
-* For both **Web Application** and **Worker Service**, migrate to Azure Database for PostgreSQL Flexible server for metadata storage with managed identity authentication, using predefined prompt.
-* For **Worker Service**, migrate to Azure Blob Storage and Azure Service Bus for image storage and message queuing, respectively, with managed identity authentication, using custom propmt created from existing commits that migrated the **Web Application**.
-
-Once the workshop is successfully completed, you should be able to run the migrated code on Azure, similar to [Run Migrated Code on Azure](#run-migrated-code-on-azure) but using the `workshop` branch with the migrated code.
-
-For more details, refer to the [workshop guide](https://github.com/Azure-Samples/java-migration-copilot-samples/blob/workshop/asset-manager/WORKSHOP.md).