ooni-probe-cli/internal/engine/netx/dialer/errorwrapper.go
Simone Basso d57c78bc71
chore: merge probe-engine into probe-cli (#201)
This is how I did it:

1. `git clone https://github.com/ooni/probe-engine internal/engine`

2. ```
(cd internal/engine && git describe --tags)
v0.23.0
```

3. `nvim go.mod` (merging `go.mod` with `internal/engine/go.mod`

4. `rm -rf internal/.git internal/engine/go.{mod,sum}`

5. `git add internal/engine`

6. `find . -type f -name \*.go -exec sed -i 's@/ooni/probe-engine@/ooni/probe-cli/v3/internal/engine@g' {} \;`

7. `go build ./...` (passes)

8. `go test -race ./...` (temporary failure on RiseupVPN)

9. `go mod tidy`

10. this commit message

Once this piece of work is done, we can build a new version of `ooniprobe` that
is using `internal/engine` directly. We need to do more work to ensure all the
other functionality in `probe-engine` (e.g. making mobile packages) are still WAI.

Part of https://github.com/ooni/probe/issues/1335
2021-02-02 12:05:47 +01:00

76 lines
1.8 KiB
Go

package dialer
import (
"context"
"net"
"github.com/ooni/probe-cli/v3/internal/engine/legacy/netx/dialid"
"github.com/ooni/probe-cli/v3/internal/engine/netx/errorx"
)
// ErrorWrapperDialer is a dialer that performs err wrapping
type ErrorWrapperDialer struct {
Dialer
}
// DialContext implements Dialer.DialContext
func (d ErrorWrapperDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
dialID := dialid.ContextDialID(ctx)
conn, err := d.Dialer.DialContext(ctx, network, address)
err = errorx.SafeErrWrapperBuilder{
// ConnID does not make any sense if we've failed and the error
// does not make any sense (and is nil) if we succeded.
DialID: dialID,
Error: err,
Operation: errorx.ConnectOperation,
}.MaybeBuild()
if err != nil {
return nil, err
}
return &ErrorWrapperConn{
Conn: conn, ConnID: safeConnID(network, conn), DialID: dialID}, nil
}
// ErrorWrapperConn is a net.Conn that performs error wrapping.
type ErrorWrapperConn struct {
net.Conn
ConnID int64
DialID int64
}
// Read implements net.Conn.Read
func (c ErrorWrapperConn) Read(b []byte) (n int, err error) {
n, err = c.Conn.Read(b)
err = errorx.SafeErrWrapperBuilder{
ConnID: c.ConnID,
DialID: c.DialID,
Error: err,
Operation: errorx.ReadOperation,
}.MaybeBuild()
return
}
// Write implements net.Conn.Write
func (c ErrorWrapperConn) Write(b []byte) (n int, err error) {
n, err = c.Conn.Write(b)
err = errorx.SafeErrWrapperBuilder{
ConnID: c.ConnID,
DialID: c.DialID,
Error: err,
Operation: errorx.WriteOperation,
}.MaybeBuild()
return
}
// Close implements net.Conn.Close
func (c ErrorWrapperConn) Close() (err error) {
err = c.Conn.Close()
err = errorx.SafeErrWrapperBuilder{
ConnID: c.ConnID,
DialID: c.DialID,
Error: err,
Operation: errorx.CloseOperation,
}.MaybeBuild()
return
}