82 lines
2.9 KiB
Diff
82 lines
2.9 KiB
Diff
From 9def5455708f7e247fe4103d47e00a7beb52169b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ond=C5=99ej=20Budai?= <ondrej@budai.cz>
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Date: Wed, 27 Jul 2022 13:35:08 +0200
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Subject: [PATCH 3/7] dbjobqueue: fix bad errors.As usages
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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errors.As is meant to check whether err (or other error in its chain) can
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be assigned to the value that target is pointing at.
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Let's consider this example:
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errors.As(err, &pgx.ErrNoRows)
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pgx.ErrNoRows (and pgx.ErrTxClosed) is typed as error, thus in all
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errors.As calls, the target is typed as *error. Err is always an error.
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So this call is basically asking whether error can be assigned to error.
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If err != nil, this is always true, thus this check doesn't make any sense
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over a plain err != nil.
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Go 1.19 now checks this issue and if it's found, it refuses to compile the
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code, see:
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https://go-review.googlesource.com/c/tools/+/339889
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This commit changes usages of errors.As() to errors.Is(). The Is() method
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doesn't check assignability but equality (the only different between Is()
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and a plain old == operator is that Is() also inspects the whole error chain).
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This fixes the check because now, we are basically checking if err (or
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any other error in its chain) == pgx.ErrTxClosed which is exactly what we
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want.
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Signed-off-by: Ondřej Budai <ondrej@budai.cz>
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---
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pkg/jobqueue/dbjobqueue/dbjobqueue.go | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/pkg/jobqueue/dbjobqueue/dbjobqueue.go b/pkg/jobqueue/dbjobqueue/dbjobqueue.go
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index 4c1e60105..25231224f 100644
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--- a/pkg/jobqueue/dbjobqueue/dbjobqueue.go
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+++ b/pkg/jobqueue/dbjobqueue/dbjobqueue.go
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@@ -18,6 +18,7 @@ import (
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"github.com/jackc/pgtype"
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"github.com/jackc/pgx/v4"
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"github.com/jackc/pgx/v4/pgxpool"
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+
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"github.com/osbuild/osbuild-composer/pkg/jobqueue"
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logrus "github.com/sirupsen/logrus"
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@@ -229,7 +230,7 @@ func (q *DBJobQueue) Enqueue(jobType string, args interface{}, dependencies []uu
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}
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defer func() {
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err := tx.Rollback(context.Background())
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- if err != nil && !errors.As(err, &pgx.ErrTxClosed) {
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+ if err != nil && !errors.Is(err, pgx.ErrTxClosed) {
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logrus.Error("error rolling back enqueue transaction: ", err)
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}
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}()
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@@ -283,7 +284,7 @@ func (q *DBJobQueue) Dequeue(ctx context.Context, jobTypes []string, channels []
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if err == nil {
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break
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}
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- if err != nil && !errors.As(err, &pgx.ErrNoRows) {
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+ if err != nil && !errors.Is(err, pgx.ErrNoRows) {
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return uuid.Nil, uuid.Nil, nil, "", nil, fmt.Errorf("error dequeuing job: %v", err)
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}
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@@ -384,7 +385,7 @@ func (q *DBJobQueue) FinishJob(id uuid.UUID, result interface{}) error {
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}
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defer func() {
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err = tx.Rollback(context.Background())
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- if err != nil && !errors.As(err, &pgx.ErrTxClosed) {
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+ if err != nil && !errors.Is(err, pgx.ErrTxClosed) {
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logrus.Errorf("error rolling back finish job transaction for job %s: %v", id, err)
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}
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--
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2.35.3
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