65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package middleware
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import (
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"errors"
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"net"
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"net/http"
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"os"
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"strings"
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infraerrors "github.com/Wei-Shaw/sub2api/internal/infrastructure/errors"
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"github.com/Wei-Shaw/sub2api/internal/pkg/response"
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"github.com/gin-gonic/gin"
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)
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// Recovery converts panics into the project's standard JSON error envelope.
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//
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// It preserves Gin's broken-pipe handling by not attempting to write a response
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// when the client connection is already gone.
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func Recovery() gin.HandlerFunc {
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return gin.CustomRecoveryWithWriter(gin.DefaultErrorWriter, func(c *gin.Context, recovered any) {
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recoveredErr, _ := recovered.(error)
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if isBrokenPipe(recoveredErr) {
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if recoveredErr != nil {
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_ = c.Error(recoveredErr)
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}
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c.Abort()
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return
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}
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if c.Writer.Written() {
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c.Abort()
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return
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}
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response.ErrorWithDetails(
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c,
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http.StatusInternalServerError,
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infraerrors.UnknownMessage,
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infraerrors.UnknownReason,
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nil,
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)
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c.Abort()
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})
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}
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func isBrokenPipe(err error) bool {
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if err == nil {
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return false
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}
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var opErr *net.OpError
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if !errors.As(err, &opErr) {
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return false
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}
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var syscallErr *os.SyscallError
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if !errors.As(opErr.Err, &syscallErr) {
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return false
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}
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msg := strings.ToLower(syscallErr.Error())
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return strings.Contains(msg, "broken pipe") || strings.Contains(msg, "connection reset by peer")
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}
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