Implement Cosmos DB Feeder Application Structure

[guibranco]

User description

Closes #

📑 Description

✅ Checks

• [ ] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [ ] I have updated the documentation as required
• [ ] All the tests have passed

☢️ Does this introduce a breaking change?

• [ ] Yes
• [ ] No

ℹ Additional Information

[!NOTE] I'm currently writing a description for your pull request. I should be done shortly (<1 minute). Please don't edit the description field until I'm finished, or we may overwrite each other. If I find nothing to write about, I'll delete this message.

---

Description

• Introduced a new structure for the Cosmos DB feeder application.
• Added configuration management using appsettings.json and environment variables.
• Implemented logging with Serilog for better monitoring and debugging.
• Created a Dockerfile for containerization of the application.
• Defined data models for interacting with Cosmos DB.

---

Changes walkthrough 📝

	Relevant files
Configuration changes	5 files .dockerignore Update .dockerignore for Docker build                                        .dockerignore Added a comprehensive list of files and directories to ignore for Docker. +25/-0    settings.json Configure SonarLint settings                                                          .vscode/settings.json - Added SonarLint configuration for connected mode. +6/-0      CosmosDbFeeder.csproj Create project file with dependencies                                        Src/CosmosDbFeeder/CosmosDbFeeder.csproj Added project file with necessary dependencies for the application. +44/-0    Dockerfile Add Dockerfile for containerization                                            Src/CosmosDbFeeder/Dockerfile Added Dockerfile for building and running the application in a container. +20/-0    appsettings.json Add application settings for Cosmos DB and logging              Src/CosmosDbFeeder/appsettings.json - Added configuration settings for Cosmos DB and Serilog. +72/-0
Miscellaneous	1 files CosmosDbFeeder.sln Initialize Visual Studio solution                                                CosmosDbFeeder.sln - Created a new Visual Studio solution file for the project. +25/-0
Enhancement	9 files Bootstrap.cs Add Bootstrap class for configuration and logging                Src/CosmosDbFeeder/Bootstrap.cs Implemented configuration loading from JSON files and environment variables. Set up a logger using Serilog. +41/-0    CosmosConfiguration.cs Define Cosmos DB configuration class                                          Src/CosmosDbFeeder/CosmosConfiguration.cs Created CosmosConfiguration class for managing Cosmos DB settings. +14/-0    HostBuilderExtensions.cs Add HostBuilder extensions for logging                                      Src/CosmosDbFeeder/HostBuilderExtensions.cs Created extension methods for configuring the host builder with Serilog. +34/-0    InnerDocument.cs Create InnerDocument class                                                              Src/CosmosDbFeeder/InnerDocument.cs - Defined `InnerDocument` class for use in Cosmos DB documents. +10/-0    JobConstants.cs Define job constants                                                                          Src/CosmosDbFeeder/JobConstants.cs - Added constants for application name. +6/-0      Program.cs Implement main application entry point                                      Src/CosmosDbFeeder/Program.cs Implemented the main entry point for the application. Configured logging and service startup. +49/-0    RootDocument.cs Define RootDocument class                                                                Src/CosmosDbFeeder/RootDocument.cs Created RootDocument class to represent the main document structure in Cosmos DB. +27/-0    StartupExtensions.cs Add startup extension methods                                                        Src/CosmosDbFeeder/StartupExtensions.cs - Added methods for setting up the application startup. +24/-0    Worker.cs Create Worker class for data operations                                    Src/CosmosDbFeeder/Worker.cs Implemented Worker class for handling data insertion into Cosmos DB. Utilized Bogus for generating test data. +133/-0

---

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Summary by Sourcery

Add a new application, CosmosDbFeeder, that performs bulk data insertion into Cosmos DB. The application is configured with Serilog for logging and includes a structured setup for configuration and dependency injection.

New Features:

• Introduce a new application, CosmosDbFeeder, which inserts a large number of items into a Cosmos DB using bulk execution capabilities.

Enhancements:

• Implement a logging system using Serilog to provide detailed logging capabilities, including console and Seq sinks.

[semanticdiff-com[bot]]

Review changes with SemanticDiff.

Analyzed 11 of 16 files.

	Filename	Status
:grey_question:	.dockerignore	Unsupported file format
:grey_question:	CosmosDbFeeder.sln	Unsupported file format
:heavy_check_mark:	Src/CosmosDbFeeder/Bootstrap.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/CosmosConfiguration.cs	Analyzed
:grey_question:	Src/CosmosDbFeeder/CosmosDbFeeder.csproj	Unsupported file format
:grey_question:	Src/CosmosDbFeeder/CosmosDbFeeder.sln	Unsupported file format
:grey_question:	Src/CosmosDbFeeder/Dockerfile	Unsupported file format
:heavy_check_mark:	Src/CosmosDbFeeder/HostBuilderExtensions.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/InnerDocument.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/JobConstants.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/Program.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/RootDocument.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/StartupExtensions.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/Worker.cs	Analyzed
:heavy_check_mark:	Src/CosmosDbFeeder/appsettings.json	Analyzed
:heavy_check_mark:	.vscode/settings.json	Analyzed

[gitguardian[bot]]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

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🔎 Detected hardcoded secret in your pull request

| GitGuardian id | GitGuardian status | Secret | Commit | Filename | | | -------------- | ------------------ | ------------------------------ | ---------------- | --------------- | -------------------- | | [8290934](https://dashboard.gitguardian.com/workspace/7014/incidents/8290934?occurrence=168166368) | Triggered | Generic High Entropy Secret | 598fdfaf480124d50abd7ea2bedd1b438b7baa68 | Src/CosmosDbFeeder/appsettings.json | [View secret](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/commit/598fdfaf480124d50abd7ea2bedd1b438b7baa68#diff-77a014e0b7d0756d6ce936c63603c4012ea82b7b6c9894b7ee4dff674efb56cfR4) |

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---

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[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds basic code for a CosmosDB feeder application. It includes a Worker class for inserting data into CosmosDB, configuration files, and supporting classes for document structures and program setup.

Class diagram for CosmosDB Feeder application

classDiagram
    class Worker {
        -CosmosConfiguration _configuration
        +Worker(CosmosConfiguration configuration)
        +Task Start()
        +Task Run(int cycle)
        +static IReadOnlyCollection<RootDocument> GetItemsToInsert()
    }

    class CosmosConfiguration {
        +string EndpointUrl
        +string AuthorizationKey
        +string DatabaseName
        +string ContainerName
    }

    class RootDocument {
        +string Id
        +string PartitionKey
        +Guid GuidProperty
        +bool BoolProperty
        +string StringProperty
        +int IntProperty
        +DateOnly DateOnlyProperty
        +decimal DecimalProperty
        +Dictionary<string, decimal> DictionaryProperty
        +InnerDocument[] InnerItems
    }

    class InnerDocument {
        +Guid Id
        +DateTimeOffset DateCreated
        +bool TestFlag
    }

    Worker --> CosmosConfiguration
    RootDocument --> InnerDocument
    Worker ..> RootDocument : uses
    Worker ..> InnerDocument : uses

File-Level Changes

Change	Details	Files
Implement Worker class for CosmosDB data insertion	Create a Worker class with methods to insert data into CosmosDB Implement a loop to run multiple cycles of data insertion Use Bogus library to generate fake data for insertion Implement error handling and logging for insertion process	Src/CosmosDbFeeder/Worker.cs
Set up application configuration and logging	Add appsettings.json with CosmosDB and Serilog configurations Create Bootstrap class for initializing configuration and logger Implement HostBuilderExtensions for configuring the worker host Add StartupExtensions for setting console title in debug mode	Src/CosmosDbFeeder/appsettings.json Src/CosmosDbFeeder/Bootstrap.cs Src/CosmosDbFeeder/HostBuilderExtensions.cs Src/CosmosDbFeeder/StartupExtensions.cs
Implement main program structure	Create Program class with Main method for application entry point Set up dependency injection and host building Implement error handling and logging for the main program	Src/CosmosDbFeeder/Program.cs
Define data models for CosmosDB documents	Create RootDocument class for main document structure Implement InnerDocument class for nested document structure Add CosmosConfiguration class for storing CosmosDB connection settings	Src/CosmosDbFeeder/RootDocument.cs Src/CosmosDbFeeder/InnerDocument.cs Src/CosmosDbFeeder/CosmosConfiguration.cs
Add utility classes and constants	Create JobConstants class for storing application-wide constants	Src/CosmosDbFeeder/JobConstants.cs

---

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Feedback

• Description: Thank you for the pull request! The changes look substantial. Please consider breaking it down into smaller, focused pull requests for easier review and merging.
• Checks:
  • [x] My pull request adheres to the code style of this project
  • [ ] My code requires changes to the documentation
  • [ ] I have updated the documentation as required
  • [x] All the tests have passed
• Breaking Change:
  • [ ] Yes
  • [x] No
• Additional Information: Consider splitting the changes into multiple pull requests for easier review and maintenance.

[deepsource-io[bot]]

Here's the code health analysis summary for commits 6bff13a..598fdfa. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Test coverage	⚠️ Artifact not reported	Timed out: Artifact was never reported	View Check ↗
Shell	✅ Success		View Check ↗
Secrets	✅ Success		View Check ↗
Docker	✅ Success		View Check ↗
C#	❌ Failure	❗ 4 occurences introduced	View Check ↗

---

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[codara-ai-code-review[bot]]

Potential issues, bugs, and flaws that can introduce unwanted behavior.

1. Partial exception handling on asynchronous tasks
   /Src/CosmosDbFeeder/Worker.cs
   In the Run method, the logging for exceptions in the ContinueWith does not properly handle cases where itemResponse fails without a populated Exception. If itemResponse.Exception is null, the code will throw a NullReferenceException. It is better to check itemResponse.IsFaulted and then log or handle specifically.

2. Secrets hard-coded in configuration file
   /Src/CosmosDbFeeder/appsettings.json
   The AuthorizationKey for the Cosmos DB is hard-coded in appsettings.json, which is a security risk. This should be moved to a secure place such as environment variables or Azure Key Vault to avoid exposure in source control.

3. Potential issue with logging configurations
   /Src/CosmosDbFeeder/appsettings.json
   The configuration for logging takes "ApplicationName" as "CosmosDbSeeder" instead of the project name "CosmosDbFeeder", which can lead to confusion during logging. Ensure that the project name aligns with the logging configuration.

4. Use of unvalidated environment variable
   /Src/CosmosDbFeeder/Bootstrap.cs
   The code defaults to "Development" if the NETCORE_ENVIRONMENT variable is not set, but there is no validation on the content of the variable. If a typo occurs or an unexpected value is assigned, it may lead to unexpected behavior.

Code suggestions and improvements for better exception handling, logic, standardization, and consistency.

1. Improving exception logging in asynchronous context
   /Src/CosmosDbFeeder/Worker.cs
   Consider revising the exception handling in the Run method with better structure and clarity:

   if (itemResponse.IsFaulted)
   {
      if (itemResponse.Exception != null)
      {
          // Handle logging based on the type of exception
      }
   }

2. Consider using Dependency Injection for configuration management
   /Src/CosmosDbFeeder/Bootstrap.cs
   Inject IConfiguration instead of statically accessing it where necessary. This approach improves testability and allows for better control over the configuration lifecycle.

3. Utilize IOptions<T> for configuration settings
   /Src/CosmosDbFeeder/CosmosConfiguration.cs
   Instead of using public properties for settings, consider creating a strongly typed setting class and using IOptions<CosmosConfiguration> to read and validate your configuration settings when the application starts. This provides better validation and structure.

4. Consistent naming conventions
   /Src/CosmosDbFeeder/CosmosConfiguration.cs
   It is recommended to keep property names consistent with other usages. For example, the CollectionName key in the appsettings.json is not being mirrored in CosmosConfiguration. Consider renaming ContainerName to align with the configuration for better semantic consistency.

5. Ensure all new files end with a newline
   Multiple files lack a newline at the end, such as /Src/CosmosDbFeeder/Dockerfile. Adding a newline at the end of files is a good practice as it can prevent issues with certain tools and version control systems. Adjust the files to end with one for consistency.

[gooroo-dev[bot]]

Please double check the following review of the pull request:

Issues counts

🐞Mistake	🤪Typo	🚨Security	🚀Performance	💪Best Practices	📖Readability	❓Others
0	0	1	1	2	1	0

Changes in the diff

• ➕ Added .vscode/settings.json for SonarLint configuration.
• ➕ Introduced Bootstrap class for configuration and logging setup.
• ➕ Added CosmosConfiguration class for Cosmos DB settings.
• ➕ Implemented HostBuilderExtensions for configuring the host builder.
• ➕ Created InnerDocument and RootDocument classes for data structure.
• ➕ Introduced JobConstants for application constants.
• ➕ Added Program class as the entry point of the application.
• ➕ Implemented StartupExtensions for setting console title in debug mode.
• ➕ Developed Worker class for inserting data into Cosmos DB.
• ➕ Added appsettings.json for application settings.

Identified Issues

ID	Type	Details	Severity	Confidence
1	🚨Security	Hardcoded Cosmos DB authorization key in appsettings.json.	🔴High	🔴High
2	🚀Performance	Inefficient use of Console.WriteLine in Worker.cs for logging.	🟠Medium	🟠Medium
3	💪Best Practices	No use of dependency injection for CosmosClient in Worker.cs.	🟠Medium	🟠Medium
4	💪Best Practices	Missing await keyword for Task.Delay in Worker.cs.	🟡Low	🔴High
5	📖Readability	No newline at the end of Program.cs.	🟡Low	🔴High

Issue Explanations and Fixes

ID 1: Hardcoded Cosmos DB authorization key

Issue:
In appsettings.json, the Cosmos DB authorization key is hardcoded, which poses a security risk.

Fix:
Use environment variables to store sensitive information like authorization keys.

{
  "Cosmos": {
    "Endpoint": "https://localhost:8081",
    "AuthorizationKey": "${COSMOS_AUTH_KEY}",
    "DatabaseName": "DatabaseName",
    "CollectionName": "CollectionName"
  }
}

Explanation:
By using environment variables, you ensure that sensitive information is not exposed in the source code.

ID 2: Inefficient use of Console.WriteLine

Issue:
Frequent calls to Console.WriteLine in Worker.cs can degrade performance, especially in high-frequency loops.

Fix:
Use a logging framework like Serilog for logging instead of Console.WriteLine.

Log.Information("Cycle: {cycle} - {partitionKey}", cycle, itemResponse.Result.Resource.PartitionKey);

Explanation:
Using a logging framework allows for more efficient and configurable logging.

ID 3: No use of dependency injection for CosmosClient

Issue:
The CosmosClient is directly instantiated in Worker.cs, which makes testing and maintenance harder.

Fix:
Inject CosmosClient via constructor dependency injection.

internal class Worker
{
    private readonly CosmosClient _cosmosClient;

    public Worker(CosmosClient cosmosClient, CosmosConfiguration configuration)
    {
        _cosmosClient = cosmosClient;
        _configuration = configuration;
    }
}

Explanation:
Dependency injection improves testability and decouples the code.

ID 4: Missing await keyword for Task.Delay

Issue:
The Task.Delay call in Worker.cs is not awaited, which can lead to unexpected behavior.

Fix:
Add the await keyword to the Task.Delay call.

await Task.Delay(1000);

Explanation:
Awaiting the task ensures that the delay is completed before proceeding.

ID 5: No newline at the end of Program.cs

Issue:
The file Program.cs does not end with a newline, which is a common convention for text files.

Fix:
Add a newline at the end of the file.

Explanation:
Ending files with a newline improves readability and compatibility with some tools.

Missing Tests

1. Test for Bootstrap Configuration:

   • Verify that the configuration is correctly loaded from appsettings.json.
   • Ensure that the logger is correctly initialized.

2. Test for CosmosConfiguration:

   • Validate that all properties are correctly set and retrieved.

3. Test for Worker Class:

   • Mock CosmosClient and test the Start method to ensure data is inserted correctly.
   • Verify that the logging occurs as expected.

4. Test for Program Class:

   • Ensure that the application starts and stops without errors.
   • Validate that the Worker is called correctly.

Summon me to re-review when updated! Yours, Gooroo.dev Please add a reaction or reply to let me know your feedback.

[penify-dev[bot]]

PR Review 🔍

⏱️ Estimated effort to review [1-5]	4, because the PR introduces a significant amount of new code across multiple files, including configuration, logging, and data handling for Cosmos DB. The complexity of the interactions and the need to understand the overall architecture will require a thorough review.
🧪 Relevant tests	No
⚡ Possible issues	Possible Bug: The hardcoded authorization key in `appsettings.json` could lead to security issues if this file is exposed or shared.
	Performance Concern: The `Worker` class is set to run a high number of cycles (150,000) with a potentially large number of inserts (1,000). This could lead to performance bottlenecks or resource exhaustion if not managed properly.
🔒 Security concerns	Sensitive information exposure: The `AuthorizationKey` in `appsettings.json` is hardcoded and could expose sensitive information if the file is not properly secured. Consider using environment variables or a secure vault for sensitive configurations.

[github-actions[bot]]

Infisical secrets check: ✅ No secrets leaked!

💻 Scan logs

```txt 3:09AM INF scanning for exposed secrets... 3:09AM INF 8 commits scanned. 3:09AM INF scan completed in 64.7ms 3:09AM INF no leaks found ```

[penify-dev[bot]]

PR Code Suggestions ✨

Category	Suggestion	Score
Security	Replace hardcoded values with environment variable references for better security ___ **Ensure that the connectionId and projectKey values are not hardcoded and are instead retrieved from environment variables or a secure configuration to enhance security and maintainability.** [.vscode/settings.json [3-4]](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/pull/8/files#diff-a5de3e5871ffcc383a2294845bd3df25d3eeff6c29ad46e3a396577c413bf357R3-R4) ```diff -"connectionId": "guilhermestracini", -"projectKey": "GuilhermeStracini_hello-world-cosmosdb-dotnet" +"connectionId": "${COSMOSDB_CONNECTION_ID}", +"projectKey": "${COSMOSDB_PROJECT_KEY}" ``` Suggestion importance[1-10]: 9 Why: The suggestion addresses a significant security concern by recommending the use of environment variables instead of hardcoded values, which is crucial for maintaining sensitive information securely.	9
Maintainability	Simplify asynchronous task handling by using await instead of ContinueWith ___ **Instead of using ContinueWith, consider using await directly on the UpsertItemAsync call to simplify error handling and improve readability.** [Src/CosmosDbFeeder/Worker.cs [50-81]](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/pull/8/files#diff-b8109f0b16c78524a688f6006881906fe1a18a8d9134f17516394be58993dc40R50-R81) ```diff -tasks.Add( - container - .UpsertItemAsync(item, new PartitionKey(item.PartitionKey)) - .ContinueWith(itemResponse => +tasks.Add(await container.UpsertItemAsync(item, new PartitionKey(item.PartitionKey))); ``` Suggestion importance[1-10]: 8 Why: Using `await` directly enhances code readability and simplifies error handling, making it easier to manage asynchronous operations.	8
Enhancement	Implement cancellation support for long-running tasks ___ **Consider using a cancellation token to allow graceful cancellation of the task execution, especially for long-running operations.** [Src/CosmosDbFeeder/Worker.cs [24]](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/pull/8/files#diff-b8109f0b16c78524a688f6006881906fe1a18a8d9134f17516394be58993dc40R24-R24) ```diff -await Run(i); +await Run(i, cancellationToken); ``` Suggestion importance[1-10]: 7 Why: Adding a cancellation token would improve the control over long-running tasks, making the application more responsive to cancellation requests.	7
	Enhance error logging to include cycle information for better debugging ___ **Consider logging the cycle number and item details in case of an exception to aid in debugging.** [Src/CosmosDbFeeder/Worker.cs [97]](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/pull/8/files#diff-b8109f0b16c78524a688f6006881906fe1a18a8d9134f17516394be58993dc40R97-R97) ```diff -Console.WriteLine(ex); +Console.WriteLine($"Exception in cycle {cycle}: {ex}"); ``` Suggestion importance[1-10]: 7 Why: Enhancing error logging to include cycle information would provide better context for debugging, especially in production scenarios.	7
Possible issue	Avoid clearing the tasks list before all tasks are completed ___ **Ensure that the tasks list is not cleared until all tasks have been awaited to prevent potential race conditions.** [Src/CosmosDbFeeder/Worker.cs [85]](https://github.com/GuilhermeStracini/hello-world-cosmosdb-dotnet/pull/8/files#diff-b8109f0b16c78524a688f6006881906fe1a18a8d9134f17516394be58993dc40R85-R85) ```diff -tasks.Clear(); +// Remove this line to avoid clearing tasks prematurely ``` Suggestion importance[1-10]: 6 Why: Clearing the tasks list prematurely could lead to race conditions, which may cause unexpected behavior in task execution.	6

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