Fix context cancelling without sending COMM_QUIT for authenticated connection #1649
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WalkthroughThe pull request introduces changes to the MySQL driver's connection management, focusing on improving context cancellation behavior for authenticated connections. A new boolean field Changes
Sequence DiagramsequenceDiagram
participant Client
participant MySQLConn
participant MySQLServer
Client->>MySQLConn: Initiate Connection
MySQLConn->>MySQLServer: Authentication Request
MySQLServer-->>MySQLConn: Authentication Response
MySQLConn->>MySQLConn: Set authed = true
alt Context Cancellation
Client->>MySQLConn: Cancel Context
MySQLConn->>MySQLServer: COMM_QUIT (if authed)
MySQLConn->>MySQLConn: Close Connection
end
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🔇 Additional comments (5)connector.go (1)
The connection.go (4)
The
The updated
This change correctly addresses the issue of sending COMM_QUIT only when appropriate.
The addition of error logging for cancel errors improves observability and will help with debugging connection issues.
Let's verify that all callers of the ✅ Verification successfulThe previous ast-grep pattern might have failed because it was too specific. Let's try with different approaches to find cancel method calls and its implementation, along with any references to the canceled field to understand the usage pattern better. Error handling for cancel() is properly implemented The verification shows that:
🏁 Scripts executedThe following scripts were executed for the analysis: Script: #!/bin/bash
# Search for all cancel() method calls
ast-grep --pattern 'mc.cancel($_)'
Length of output: 36 Script: #!/bin/bash
# Search for cancel() method calls with more context using ripgrep
rg "\.cancel\(" -A 2 -B 2
Length of output: 203 Script: #!/bin/bash
# Search for cancel method implementation and its usage pattern
ast-grep --pattern 'cancel($$$) {
$$$
}'
Length of output: 44 Script: #!/bin/bash
# Search for any direct references to the canceled field
rg "\.canceled" -A 2 -B 2
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Description
Fix #1648
Currently, I don't know how to detect whether the connection is successful, so I added the 'authed' variable to mysqlConn. If you have a better approach, please share it with me.
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New Features
Bug Fixes
Documentation