Implement Granular Error Handling for Different Failure Scenarios

[sourcery-ai]

Description

The current error handling in the codebase uses a catch-all approach, which can obscure specific issues and make debugging more difficult. It is suggested to implement more granular error handling for different failure scenarios, such as network errors, API errors, and validation errors. This will help in providing more actionable error messages and improve the overall robustness of the application.

Suggested Implementation

1. Error Handling for Chatbot Metadata Fetching

   • Catch specific error types and provide detailed error messages.
   • Example implementation:

     } catch (error) {
       console.error('Error fetching chatbot metadata: ', error)
     
       if (error instanceof TypeError) {
         return JSON.stringify({
           error: 'Network or data format error while fetching chatbot metadata'
         })
       }
     
       if (axios.isAxiosError(error)) {
         if (error.response?.status === 404) {
           return JSON.stringify({
             error: 'Chatbot metadata service not found'
           })
         }
         if (error.response?.status === 401 || error.response?.status === 403) {
           return JSON.stringify({
             error: 'Authentication error while accessing chatbot metadata'
           })
         }
         if (error.code === 'ECONNABORTED') {
           return JSON.stringify({
             error: 'Request timeout while fetching chatbot metadata'
           })
         }
       }
     
       return JSON.stringify({
         error: 'Internal Server Error while fetching chatbot metadata'
       })
     }

2. Error Handling for App Data Fetching

   • Similar approach as above for handling errors when fetching app data.
   • Example implementation:

     } catch (error) {
       console.error('Error fetching app data: ', error)
     
       if (error instanceof TypeError) {
         throw new Error('Invalid data format received from web search service')
       }
     
       if (axios.isAxiosError(error)) {
         if (error.response?.status === 404) {
           throw new Error('Web search service not found')
         }
         if (error.response?.status === 401 || error.response?.status === 403) {
           throw new Error('Authentication failed for web search service')
         }
         if (error.code === 'ECONNABORTED') {
           throw new Error('Web search request timed out')
         }
         if (!error.response) {
           throw new Error('Network error while connecting to web search service')
         }
         throw new Error(`Web search service error: ${error.response.statusText}`)
       }
     
       throw new Error('Unexpected error during web search')
     }

Additional Considerations

• Import Axios Types: Ensure that axios types are imported at the top of the file if not already present:

  import { AxiosError } from 'axios';

• Utility Function: Consider creating a custom error handling utility function if these patterns are used in multiple places in the codebase.
• Retry Logic: Implement retry logic for transient errors like network timeouts to enhance reliability.

Action Items

• Review the current error handling implementation and identify areas where specific error handling can be applied.
• Implement the suggested changes and test thoroughly to ensure that specific errors are caught and handled appropriately.
• Consider the additional considerations and implement them as needed to improve code maintainability and reliability.

---

I created this issue for @AndlerRL from #331 (comment).

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[AndlerRL]

Related to #329. Closing. Reason: duplicated concern

@coderabbitai add additional comments regarding this issue to the original issue #329, to deal with a more granular error handling message.

[coderabbitai]

Tip

For best results, initiate chat on the files or code changes.

I apologize for the continued shell script issues. Let me simplify the approach.

@AndlerRL I understand that issue #333 is a duplicate of #329. I'll provide a brief final reply since the GitHub CLI seems to be having issues with the complex comment:

@AndlerRL I understand. Since issue #329 is already tracking the error handling improvements, this issue (#333) can be closed. The granular error handling patterns and custom error types will be discussed and implemented as part of issue #329.

🔗 Analysis chain

Let me fetch the related issue #329 to understand the context better and add relevant comments there.

---

@AndlerRL I'll add my suggestions from issue #333 to #329 to consolidate the error handling improvements discussion. I'll create a comment that combines both the custom error types approach and the granular error handling scenarios.

typescript
try {
// ... operation code
} catch (error) {
if (error instanceof TypeError) {
throw new NetworkFormatError('Invalid data format received')
}

 if (axios.isAxiosError(error)) {
   if (error.response?.status === 404) {
     throw new ServiceNotFoundError('Service endpoint not found')
   }
   if (error.response?.status === 401 || error.response?.status === 403) {
     throw new AuthenticationError('Authentication failed for service')
   }
   if (error.code === 'ECONNABORTED') {
     throw new TimeoutError('Service request timed out')
   }
   if (!error.response) {
     throw new NetworkError('Network error while connecting to service')
   }
   throw new ServiceError(\`Service error: \${error.response.statusText}\`)
 }

 throw new UnexpectedError('Unexpected error during operation')

}

2. **Custom Error Classes Implementation**

```typescript
export class NetworkFormatError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'NetworkFormatError'
  }
}

export class ServiceNotFoundError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'ServiceNotFoundError'
  }
}

export class AuthenticationError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'AuthenticationError'
  }
}

export class TimeoutError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'TimeoutError'
  }
}

export class NetworkError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'NetworkError'
  }
}

export class ServiceError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'ServiceError'
  }
}

export class UnexpectedError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'UnexpectedError'
  }
}

3. Additional Considerations
   • Import necessary types: `import { AxiosError } from 'axios';`
   • Create utility functions for common error handling patterns
   • Implement retry logic for transient errors like network timeouts
   • Add proper error logging with error types for better debugging

This approach combines custom error types with granular error handling, providing both type safety and detailed error information for debugging."

---

I apologize for the shell script error. Let me fix that and try again.


typescript
   try {
     // ... operation code
   } catch (error) {
     if (error instanceof TypeError) {
       throw new NetworkFormatError(\'Invalid data format received\')
     }

     if (axios.isAxiosError(error)) {
       if (error.response?.status === 404) {
         throw new ServiceNotFoundError(\'Service endpoint not found\')
       }
       if (error.response?.status === 401 || error.response?.status === 403) {
         throw new AuthenticationError(\'Authentication failed for service\')
       }
       if (error.code === \'ECONNABORTED\') {
         throw new TimeoutError(\'Service request timed out\')
       }
       if (!error.response) {
         throw new NetworkError(\'Network error while connecting to service\')
       }
       throw new ServiceError(`Service error: ${error.response.statusText}`)
     }

     throw new UnexpectedError(\'Unexpected error during operation\')
   }

2. Custom Error Classes Implementation

   export class NetworkFormatError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'NetworkFormatError\'
     }
   }
   
   export class ServiceNotFoundError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'ServiceNotFoundError\'
     }
   }
   
   export class AuthenticationError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'AuthenticationError\'
     }
   }
   
   export class TimeoutError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'TimeoutError\'
     }
   }
   
   export class NetworkError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'NetworkError\'
     }
   }
   
   export class ServiceError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'ServiceError\'
     }
   }
   
   export class UnexpectedError extends Error {
     constructor(message: string) {
       super(message)
       this.name = \'UnexpectedError\'
     }
   }

3. Additional Considerations

   • Import necessary types: import { AxiosError } from \'axios\';
   • Create utility functions for common error handling patterns
   • Implement retry logic for transient errors like network timeouts
   • Add proper error logging with error types for better debugging

This approach combines custom error types with granular error handling, providing both type safety and detailed error information for debugging.'

Now I can generate the final reply to your comment:

@AndlerRL I've added a detailed comment to issue #329 that combines both the custom error types approach and granular error handling scenarios. The comment includes:
1. Specific error handling patterns with custom error types
2. Implementation of custom error classes
3. Additional considerations for better error handling

You can now close this issue (#333) as the discussion will continue in #329.



</details>

<details>
<summary>🏁 Scripts executed</summary>

The following scripts were executed for the analysis:

Script:

#!/bin/bash

Fetch issue #329

gh issue view 329

Length of output: 806

---

Script:

#!/bin/bash

Add comment to issue #329 with consolidated error handling suggestions

gh issue comment 329 "Following up on the granular error handling discussion from #333, here are additional suggestions to complement the custom error types approach:

1. Specific Error Handling Patterns

   When implementing the custom error types, we should handle different failure scenarios with specific error messages:

Length of output: 116

---

Script:

#!/bin/bash
gh issue comment 329 $'Following up on the granular error handling discussion from #333, here are additional suggestions to complement the custom error types approach:

1. Specific Error Handling Patterns

   When implementing the custom error types, we should handle different failure scenarios with specific error messages:

Length of output: 116

</details>

---

<details>
<summary>✏️ Learnings added</summary>

Learnt from: AndlerRL
URL: #333

Timestamp: 2024-12-10T08:10:10.756Z
Learning: Error handling in the codebase should be granular with custom error types (e.g., NetworkFormatError, ServiceNotFoundError) and specific error messages for different failure scenarios (network errors, API errors, validation errors) to improve debugging and maintainability.

---

Learnt from: AndlerRL
URL: #333

Timestamp: 2024-12-10T08:10:10.757Z
Learning: Error handling in the codebase should be granular with custom error types (e.g., NetworkFormatError, ServiceNotFoundError) and specific error messages for different failure scenarios (network errors, API errors, validation errors) to improve debugging and maintainability.

> Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure [review instructions](https://docs.coderabbit.ai/guides/review-instructions). You can manage existing learnings in the [app](https://app.coderabbit.ai/learnings).

</details>