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Prevent context deadline error propagation in GetCommitsInfo (#20346) 

* Prevent context deadline error propagation in GetCommitsInfo

Although `WalkGitLog` tries to test for `context.DeadlineExceededErr`
there is a small chance that the error will propagate to the reader
before it is recognised. This will cause the error to propagate up to
`renderDirectoryFiles` and cause a http status 500.

Here we check that the error passed is a `DeadlineExceededErr` via error.Is

Fix #20329

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2022-07-13 23:24:29 +01:00 committed by GitHub
parent 07ec8288bf
commit fe09ee564d
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1 changed files with 5 additions and 3 deletions
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8
modules/git/log_name_status.go
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@ -8,6 +8,7 @@ import (
"bufio" "bufio"
"bytes" "bytes"
"context" "context"
"errors"
"io" "io"
"path" "path"
"sort" "sort"
@ -62,9 +63,10 @@ func LogNameStatusRepo(ctx context.Context, repository, head, treepath string, p
}) })
if err != nil { if err != nil {
_ = stdoutWriter.CloseWithError(ConcatenateError(err, (&stderr).String())) _ = stdoutWriter.CloseWithError(ConcatenateError(err, (&stderr).String()))
} else { return
_ = stdoutWriter.Close()
} }
_ = stdoutWriter.Close()
}() }()
// For simplicities sake we'll us a buffered reader to read from the cat-file --batch // For simplicities sake we'll us a buffered reader to read from the cat-file --batch
@ -354,7 +356,7 @@ heaploop:
} }
current, err := g.Next(treepath, path2idx, changed, maxpathlen) current, err := g.Next(treepath, path2idx, changed, maxpathlen)
if err != nil { if err != nil {
if err == context.DeadlineExceeded { if errors.Is(err, context.DeadlineExceeded) {
break heaploop break heaploop
} }
g.Close() g.Close()