798502b204
This makes a framework for adding temporary errors identified by syscall number or by error string. Fixes #1660
80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package fs
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"net/url"
|
|
"os"
|
|
"syscall"
|
|
"testing"
|
|
|
|
"github.com/pkg/errors"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
var errUseOfClosedNetworkConnection = errors.New("use of closed network connection")
|
|
|
|
// make a plausible network error with the underlying errno
|
|
func makeNetErr(errno syscall.Errno) error {
|
|
return &net.OpError{
|
|
Op: "write",
|
|
Net: "tcp",
|
|
Source: &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 123},
|
|
Addr: &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8080},
|
|
Err: &os.SyscallError{
|
|
Syscall: "write",
|
|
Err: errno,
|
|
},
|
|
}
|
|
}
|
|
|
|
func TestIsClosedConnError(t *testing.T) {
|
|
for i, test := range []struct {
|
|
err error
|
|
want bool
|
|
}{
|
|
{nil, false},
|
|
{errors.New("potato"), false},
|
|
{errUseOfClosedNetworkConnection, true},
|
|
{makeNetErr(syscall.EAGAIN), true},
|
|
{makeNetErr(syscall.Errno(123123123)), false},
|
|
} {
|
|
got := isClosedConnError(test.err)
|
|
assert.Equal(t, test.want, got, fmt.Sprintf("test #%d: %v", i, test.err))
|
|
}
|
|
}
|
|
|
|
func TestShouldRetry(t *testing.T) {
|
|
for i, test := range []struct {
|
|
err error
|
|
want bool
|
|
}{
|
|
{nil, false},
|
|
{errors.New("potato"), false},
|
|
{errors.Wrap(errUseOfClosedNetworkConnection, "connection"), true},
|
|
{io.EOF, true},
|
|
{io.ErrUnexpectedEOF, true},
|
|
{&url.Error{Op: "post", URL: "/", Err: io.EOF}, true},
|
|
{&url.Error{Op: "post", URL: "/", Err: errUseOfClosedNetworkConnection}, true},
|
|
{
|
|
errors.Wrap(&url.Error{
|
|
Op: "post",
|
|
URL: "http://localhost/",
|
|
Err: makeNetErr(syscall.EPIPE),
|
|
}, "potato error"),
|
|
true,
|
|
},
|
|
{
|
|
errors.Wrap(&url.Error{
|
|
Op: "post",
|
|
URL: "http://localhost/",
|
|
Err: makeNetErr(syscall.Errno(123123123)),
|
|
}, "listing error"),
|
|
false,
|
|
},
|
|
} {
|
|
got := ShouldRetry(test.err)
|
|
assert.Equal(t, test.want, got, fmt.Sprintf("test #%d: %v", i, test.err))
|
|
}
|
|
}
|