feat: add mongoDb connet function #179
Conversation
WalkthroughThe changes involve two main updates: a version bump in the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant DatabaseManager
participant MongoDB
User->>DatabaseManager: Call connectToMongoDB(url)
DatabaseManager->>MongoDB: Attempt connection
alt Connection successful
MongoDB-->>DatabaseManager: Success
DatabaseManager-->>User: Log success message
else Connection failed
MongoDB-->>DatabaseManager: Error
DatabaseManager-->>User: Log error message
end
User->>DatabaseManager: Call disconnectFromMongoDB()
DatabaseManager->>MongoDB: Close connection
alt Disconnection successful
MongoDB-->>DatabaseManager: Success
DatabaseManager-->>User: Log disconnection message
else Disconnection failed
MongoDB-->>DatabaseManager: Error
DatabaseManager-->>User: Log error message
end
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (2)
src/service/databaseManager.ts (2)
32-39: Add connection event handlersMonitor connection state changes and handle reconnection scenarios.
public async connectToMongoDB(url: string): Promise<void> { try { await mongoose.connect(url); + mongoose.connection.on('disconnected', () => { + console.log('MongoDB disconnected'); + }); + mongoose.connection.on('reconnected', () => { + console.log('MongoDB reconnected'); + }); + mongoose.connection.on('error', (error) => { + console.error('MongoDB connection error:', error); + }); console.log('Connected to MongoDB!'); } catch (error) { console.log({ error }, 'Failed to connect to MongoDB!'); } }
32-39: Consider architectural improvements for connection managementThe current implementation might conflict with existing database operations:
- The class uses
mongoose.connectionglobally but now has a separate connect method- No clear separation between MongoDB and other potential database connections
- Missing connection pooling strategy for multiple databases
Consider implementing a connection manager that can:
- Handle multiple database types
- Manage connection pools
- Provide connection status monitoring
Would you like assistance in designing a more robust connection management architecture?
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (2)
package.json(1 hunks)src/service/databaseManager.ts(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- package.json
🔇 Additional comments (1)
src/service/databaseManager.ts (1)
32-39: Verify MongoDB connection usage across the codebase
The new MongoDB connection might affect existing database operations.
✅ Verification successful
MongoDB connection implementation is properly isolated and consistent
The verification shows that MongoDB connection handling is well-structured and centralized:
- Database connection is managed solely through
databaseManager.ts - Test setup properly handles database connections in
setupTestDB.ts - Configuration is properly managed through environment variables in
config/index.ts - All models use the standard mongoose model imports and don't implement their own connection logic
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check for existing MongoDB connection handling
rg -l "mongoose.(connect|connection)" --type ts
# Check for potential connection management in tests
rg -l "mongoose.(connect|connection)" --type test
# Look for environment configuration related to MongoDB
rg -l "MONGODB_URI|MONGO_URL" --type ts
Length of output: 234
Script:
#!/bin/bash
# Let's check the content of setupTestDB.ts to understand test DB setup
cat "__tests__/utils/setupTestDB.ts"
# Check for any MongoDB-related configurations or environment variables
rg "mongodb|MONGO" -i
# Look for database operations or mongoose model usage
ast-grep --pattern 'mongoose.model($$$)'
Length of output: 9206
src/service/databaseManager.ts
Outdated
| public async connectToMongoDB(url: string): Promise<void> { | ||
| try { | ||
| await mongoose.connect(url); | ||
| console.log('Connected to MongoDB!'); | ||
| } catch (error) { | ||
| console.log({ error }, 'Failed to connect to MongoDB!'); | ||
| } | ||
| } |
There was a problem hiding this comment.
Improve error handling and connection management
The current implementation has several critical issues that should be addressed for production use:
- Errors should be thrown rather than just logged
- Connection state should be tracked
- Missing proper connection options
Consider this improved implementation:
+ private mongoConnection: mongoose.Connection | null = null;
public async connectToMongoDB(url: string): Promise<void> {
try {
+ if (this.mongoConnection) {
+ throw new Error('MongoDB connection already exists');
+ }
await mongoose.connect(url, {
+ useNewUrlParser: true,
+ useUnifiedTopology: true,
+ serverSelectionTimeoutMS: 5000,
+ connectTimeoutMS: 10000,
});
+ this.mongoConnection = mongoose.connection;
console.log('Connected to MongoDB!');
} catch (error) {
- console.log({ error }, 'Failed to connect to MongoDB!');
+ throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`);
}
}
+ public async disconnectFromMongoDB(): Promise<void> {
+ try {
+ if (this.mongoConnection) {
+ await this.mongoConnection.close();
+ this.mongoConnection = null;
+ console.log('Disconnected from MongoDB');
+ }
+ } catch (error) {
+ throw new Error(`Failed to disconnect from MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`);
+ }
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| await mongoose.connect(url); | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| console.log({ error }, 'Failed to connect to MongoDB!'); | |
| } | |
| } | |
| private mongoConnection: mongoose.Connection | null = null; | |
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| if (this.mongoConnection) { | |
| throw new Error('MongoDB connection already exists'); | |
| } | |
| await mongoose.connect(url, { | |
| useNewUrlParser: true, | |
| useUnifiedTopology: true, | |
| serverSelectionTimeoutMS: 5000, | |
| connectTimeoutMS: 10000, | |
| }); | |
| this.mongoConnection = mongoose.connection; | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); | |
| } | |
| } | |
| public async disconnectFromMongoDB(): Promise<void> { | |
| try { | |
| if (this.mongoConnection) { | |
| await this.mongoConnection.close(); | |
| this.mongoConnection = null; | |
| console.log('Disconnected from MongoDB'); | |
| } | |
| } catch (error) { | |
| throw new Error(`Failed to disconnect from MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); | |
| } | |
| } |
🛠️ Refactor suggestion
Add connection retry mechanism
For better reliability, implement a retry mechanism for handling temporary connection failures.
+ private async connectWithRetry(url: string, maxRetries: number = 3): Promise<void> {
+ let retries = 0;
+ while (retries < maxRetries) {
+ try {
+ await mongoose.connect(url);
+ return;
+ } catch (error) {
+ retries++;
+ if (retries === maxRetries) throw error;
+ console.log(`Connection attempt ${retries} failed, retrying...`);
+ await new Promise(resolve => setTimeout(resolve, 2000 * retries));
+ }
+ }
+ }
public async connectToMongoDB(url: string): Promise<void> {
try {
- await mongoose.connect(url);
+ await this.connectWithRetry(url);
console.log('Connected to MongoDB!');
} catch (error) {
console.log({ error }, 'Failed to connect to MongoDB!');
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| await mongoose.connect(url); | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| console.log({ error }, 'Failed to connect to MongoDB!'); | |
| } | |
| } | |
| private async connectWithRetry(url: string, maxRetries: number = 3): Promise<void> { | |
| let retries = 0; | |
| while (retries < maxRetries) { | |
| try { | |
| await mongoose.connect(url); | |
| return; | |
| } catch (error) { | |
| retries++; | |
| if (retries === maxRetries) throw error; | |
| console.log(`Connection attempt ${retries} failed, retrying...`); | |
| await new Promise(resolve => setTimeout(resolve, 2000 * retries)); | |
| } | |
| } | |
| } | |
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| await this.connectWithRetry(url); | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| console.log({ error }, 'Failed to connect to MongoDB!'); | |
| } | |
| } |
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
src/service/databaseManager.ts (2)
40-50: Enhance disconnect method with timeout and force optionsThe disconnect implementation is good but could be improved:
- Use loose equality for null check
- Add timeout handling
- Consider adding force disconnect option
Consider this enhancement:
- public async disconnectFromMongoDB(): Promise<void> { + public async disconnectFromMongoDB(force: boolean = false): Promise<void> { try { - if (this.mongoConnection !== null) { + if (this.mongoConnection != null) { + const closePromise = this.mongoConnection.close(force); + const timeoutPromise = new Promise((_, reject) => + setTimeout(() => reject(new Error('Disconnect timeout')), 5000) + ); - await this.mongoConnection.close(); + await Promise.race([closePromise, timeoutPromise]); this.mongoConnection = null; console.log('Disconnected from MongoDB'); } } catch (error) { throw new Error(`Failed to disconnect from MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); } }
24-50: Consider adding connection management featuresThe current implementation could benefit from additional connection management features:
- Add connection pooling configuration for better performance
- Implement connection health checks
- Add cleanup of cached models on disconnect
- Consider implementing connection events handling
Would you like me to provide a detailed implementation for any of these features?
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (1)
src/service/databaseManager.ts(1 hunks)
🔇 Additional comments (2)
src/service/databaseManager.ts (2)
24-24: LGTM! Well-typed connection property.
The property is properly typed, initialized, and encapsulated.
24-50: Verify connection handling in existing methods
The new connection management might affect existing methods that use mongoose.connection directly. Let's verify the usage:
✅ Verification successful
Let me check the test setup and the full implementation to better understand the connection handling:
Connection handling implementation is correct and safe
The implementation is well-designed and doesn't introduce any issues:
-
Direct
mongoose.connectionusage is properly encapsulated:- Only used after successful connection in
connectToMongoDB - All usages are within the
DatabaseManagerclass - The singleton pattern ensures consistent connection state
- Only used after successful connection in
-
Connection state is properly managed:
- Connection existence check before connecting
- Null check before disconnecting
- Connection stored in instance variable for state tracking
-
Test setup (though commented out) aligns with the implementation pattern
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for direct mongoose.connection usage
echo "Searching for direct mongoose.connection usage..."
ast-grep --pattern 'mongoose.connection'
# Search for potential connection state checks
echo "Searching for connection state checks..."
rg -l "mongoose\.(connect|connection|disconnect)"
Length of output: 646
Script:
#!/bin/bash
# Check test setup
echo "Checking test setup..."
cat __tests__/utils/setupTestDB.ts
# Check full database manager implementation
echo "Checking database manager implementation..."
cat src/service/databaseManager.ts
Length of output: 3981
| public async connectToMongoDB(url: string): Promise<void> { | ||
| try { | ||
| if (this.mongoConnection !== null) { | ||
| throw new Error('MongoDB connection already exists'); | ||
| } | ||
| await mongoose.connect(url); | ||
| this.mongoConnection = mongoose.connection; | ||
| console.log('Connected to MongoDB!'); | ||
| } catch (error) { | ||
| console.log({ error }, 'Failed to connect to MongoDB!'); | ||
| throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add production-ready connection options and improve error handling
While the basic implementation is good, there are several improvements needed for production use:
- Remove redundant error logging since you're throwing the error
- Add connection options for better reliability
- Use loose equality for null check
Apply these changes:
public async connectToMongoDB(url: string): Promise<void> {
try {
- if (this.mongoConnection !== null) {
+ if (this.mongoConnection != null) {
throw new Error('MongoDB connection already exists');
}
- await mongoose.connect(url);
+ await mongoose.connect(url, {
+ useNewUrlParser: true,
+ useUnifiedTopology: true,
+ serverSelectionTimeoutMS: 5000,
+ connectTimeoutMS: 10000,
+ });
this.mongoConnection = mongoose.connection;
console.log('Connected to MongoDB!');
} catch (error) {
- console.log({ error }, 'Failed to connect to MongoDB!');
throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`);
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| if (this.mongoConnection !== null) { | |
| throw new Error('MongoDB connection already exists'); | |
| } | |
| await mongoose.connect(url); | |
| this.mongoConnection = mongoose.connection; | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| console.log({ error }, 'Failed to connect to MongoDB!'); | |
| throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); | |
| } | |
| } | |
| public async connectToMongoDB(url: string): Promise<void> { | |
| try { | |
| if (this.mongoConnection != null) { | |
| throw new Error('MongoDB connection already exists'); | |
| } | |
| await mongoose.connect(url, { | |
| useNewUrlParser: true, | |
| useUnifiedTopology: true, | |
| serverSelectionTimeoutMS: 5000, | |
| connectTimeoutMS: 10000, | |
| }); | |
| this.mongoConnection = mongoose.connection; | |
| console.log('Connected to MongoDB!'); | |
| } catch (error) { | |
| throw new Error(`Failed to connect to MongoDB: ${error instanceof Error ? error.message : 'Unknown error'}`); | |
| } | |
| } |
Summary by CodeRabbit
New Features
Bug Fixes
Chores