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*: improve logging and error handling for exits (#3347)
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Add more logging and more detailed errors for exits. Given that the exits are fire and forget operation and not a long running process, we can afford more details without the issue of polluting with too much.

category: feature
ticket: #3136
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@KaloyanTanev
KaloyanTanev authored Oct 28, 2024
1 parent be60135 commit 45c1ef5
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Showing 14 changed files with 601 additions and 136 deletions.
51 changes: 41 additions & 10 deletions app/obolapi/api.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ const (
func New(urlStr string, options ...func(*Client)) (Client, error) {
_, err := url.ParseRequestURI(urlStr) // check that urlStr is valid
if err != nil {
return Client{}, errors.Wrap(err, "could not parse Obol API URL")
return Client{}, errors.Wrap(err, "parse Obol API URL")
}

// always set a default timeout, even if no options are provided
Expand Down Expand Up @@ -63,7 +63,7 @@ func WithTimeout(timeout time.Duration) func(*Client) {
func (c Client) url() *url.URL {
baseURL, err := url.ParseRequestURI(c.baseURL)
if err != nil {
panic(errors.Wrap(err, "could not parse Obol API URL, this should never happen"))
panic(errors.Wrap(err, "parse Obol API URL, this should never happen"))
}

return baseURL
Expand All @@ -83,7 +83,7 @@ func (c Client) PublishLock(ctx context.Context, lock cluster.Lock) error {
ctx, cancel := context.WithTimeout(ctx, c.reqTimeout)
defer cancel()

err = httpPost(ctx, addr, b)
err = httpPost(ctx, addr, b, nil)
if err != nil {
return err
}
Expand All @@ -105,27 +105,58 @@ func launchpadURLPath(lock cluster.Lock) string {
return fmt.Sprintf(launchpadReturnPathFmt, lock.LockHash)
}

func httpPost(ctx context.Context, url *url.URL, b []byte) error {
req, err := http.NewRequestWithContext(ctx, http.MethodPost, url.String(), bytes.NewReader(b))
func httpPost(ctx context.Context, url *url.URL, body []byte, headers map[string]string) error {
req, err := http.NewRequestWithContext(ctx, http.MethodPost, url.String(), bytes.NewReader(body))
if err != nil {
return errors.Wrap(err, "new POST request with ctx")
}
req.Header.Add("Content-Type", "application/json")
for key, val := range headers {
req.Header.Set(key, val)
}

res, err := new(http.Client).Do(req)
if err != nil {
return errors.Wrap(err, "failed to call POST endpoint")
return errors.Wrap(err, "call POST endpoint")
}
defer res.Body.Close()

data, err := io.ReadAll(res.Body)
if res.StatusCode/100 != 2 {
data, err := io.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "read POST response", z.Int("status", res.StatusCode))
}

return errors.New("http POST failed", z.Int("status", res.StatusCode), z.Str("body", string(data)))
}

return nil
}

func httpGet(ctx context.Context, url *url.URL, headers map[string]string) (io.ReadCloser, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url.String(), nil)
if err != nil {
return errors.Wrap(err, "failed to read POST response")
return nil, errors.Wrap(err, "new GET request with ctx")
}
req.Header.Add("Content-Type", "application/json")

for key, val := range headers {
req.Header.Set(key, val)
}

res, err := new(http.Client).Do(req)
if err != nil {
return nil, errors.Wrap(err, "call GET endpoint")
}

if res.StatusCode/100 != 2 {
return errors.New("post failed", z.Int("status", res.StatusCode), z.Str("body", string(data)))
data, err := io.ReadAll(res.Body)
if err != nil {
return nil, errors.Wrap(err, "read POST response", z.Int("status", res.StatusCode))
}

return nil, errors.New("http GET failed", z.Int("status", res.StatusCode), z.Str("body", string(data)))
}

return nil
return res.Body, nil
}
155 changes: 155 additions & 0 deletions app/obolapi/api_internal_test.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,11 @@
package obolapi

import (
"context"
"io"
"net/http"
"net/http/httptest"
"net/url"
"testing"
"time"

Expand All @@ -21,3 +26,153 @@ func TestWithTimeout(t *testing.T) {
require.NoError(t, err)
require.Equal(t, timeout, oapi.reqTimeout)
}

func TestHttpPost(t *testing.T) {
tests := []struct {
name string
body []byte
headers map[string]string
server *httptest.Server
endpoint string
expectedError string
}{
{
name: "default scenario",
body: nil,
headers: nil,
endpoint: "/post-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/post-request")
require.Equal(t, r.Method, http.MethodPost)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")
w.WriteHeader(http.StatusOK)
})),
expectedError: "",
},
{
name: "default scenario with body and headers",
body: []byte(`{"test_body_key": "test_body_value"}`),
headers: map[string]string{"test_header_key": "test_header_value"},
endpoint: "/post-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/post-request")
require.Equal(t, r.Method, http.MethodPost)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")
require.Equal(t, r.Header.Get("test_header_key"), "test_header_value") //nolint:canonicalheader

data, err := io.ReadAll(r.Body)
require.NoError(t, err)
defer r.Body.Close()
require.Equal(t, string(data), `{"test_body_key": "test_body_value"}`)

w.WriteHeader(http.StatusOK)
_, err = w.Write([]byte(`"OK"`))
require.NoError(t, err)
})),
expectedError: "",
},
{
name: "status code not 2XX",
body: nil,
headers: nil,
endpoint: "/post-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/post-request")
require.Equal(t, r.Method, http.MethodPost)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")

w.WriteHeader(http.StatusBadRequest)
_, err := w.Write([]byte(`"Bad Request response"`))
require.NoError(t, err)
})),
expectedError: "POST failed",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
testServerURL, err := url.ParseRequestURI(test.server.URL)
require.NoError(t, err)
err = httpPost(context.Background(), testServerURL.JoinPath(test.endpoint), test.body, test.headers)
if test.expectedError != "" {
require.Error(t, err)
require.ErrorContains(t, err, test.expectedError)
} else {
require.NoError(t, err)
}
})
}
}

func TestHttpGet(t *testing.T) {
tests := []struct {
name string
headers map[string]string
server *httptest.Server
endpoint string
expectedResp []byte
expectedError string
}{
{
name: "default scenario",
headers: nil,
endpoint: "/get-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/get-request")
require.Equal(t, r.Method, http.MethodGet)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")
w.WriteHeader(http.StatusOK)
})),
expectedError: "",
},
{
name: "default scenario with headers",
headers: map[string]string{"test_header_key": "test_header_value"},
endpoint: "/get-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/get-request")
require.Equal(t, r.Method, http.MethodGet)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")
require.Equal(t, r.Header.Get("test_header_key"), "test_header_value") //nolint:canonicalheader

w.WriteHeader(http.StatusOK)
_, err := w.Write([]byte(`"OK"`))
require.NoError(t, err)
})),
expectedResp: []byte(`"OK"`),
expectedError: "",
},
{
name: "status code not 2XX",
headers: nil,
endpoint: "/get-request",
server: httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.URL.Path, "/get-request")
require.Equal(t, r.Method, http.MethodGet)
require.Equal(t, r.Header.Get("Content-Type"), "application/json")

w.WriteHeader(http.StatusBadRequest)
_, err := w.Write([]byte(`"Bad Request response"`))
require.NoError(t, err)
})),
expectedResp: []byte(`"Bad Request response"`),
expectedError: "GET failed",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
testServerURL, err := url.ParseRequestURI(test.server.URL)
require.NoError(t, err)
respBody, err := httpGet(context.Background(), testServerURL.JoinPath(test.endpoint), test.headers)
if test.expectedError != "" {
require.Error(t, err)
require.ErrorContains(t, err, test.expectedError)
} else {
require.NoError(t, err)
defer respBody.Close()
resp, err := io.ReadAll(respBody)
require.NoError(t, err)
require.Equal(t, string(resp), string(test.expectedResp))
}
})
}
}
51 changes: 8 additions & 43 deletions app/obolapi/exit.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,12 +3,10 @@
package obolapi

import (
"bytes"
"context"
"encoding/hex"
"encoding/json"
"fmt"
"net/http"
"net/url"
"sort"
"strconv"
Expand Down Expand Up @@ -71,7 +69,7 @@ func (c Client) PostPartialExits(ctx context.Context, lockHash []byte, shareInde

u, err := url.ParseRequestURI(c.baseURL)
if err != nil {
return errors.Wrap(err, "bad obol api url")
return errors.Wrap(err, "bad Obol API url")
}

u.Path = path
Expand Down Expand Up @@ -107,24 +105,9 @@ func (c Client) PostPartialExits(ctx context.Context, lockHash []byte, shareInde
ctx, cancel := context.WithTimeout(ctx, c.reqTimeout)
defer cancel()

req, err := http.NewRequestWithContext(ctx, http.MethodPost, u.String(), bytes.NewReader(data))
err = httpPost(ctx, u, data, nil)
if err != nil {
return errors.Wrap(err, "http new post request")
}

req.Header.Set("Content-Type", "application/json")

resp, err := http.DefaultClient.Do(req)
if err != nil {
return errors.Wrap(err, "http post error")
}

defer func() {
_ = resp.Body.Close()
}()

if resp.StatusCode != http.StatusCreated {
return errors.New("http error", z.Int("status_code", resp.StatusCode))
return errors.Wrap(err, "http Obol API POST request")
}

return nil
Expand All @@ -142,19 +125,14 @@ func (c Client) GetFullExit(ctx context.Context, valPubkey string, lockHash []by

u, err := url.ParseRequestURI(c.baseURL)
if err != nil {
return ExitBlob{}, errors.Wrap(err, "bad obol api url")
return ExitBlob{}, errors.Wrap(err, "bad Obol API url")
}

u.Path = path

ctx, cancel := context.WithTimeout(ctx, c.reqTimeout)
defer cancel()

req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
if err != nil {
return ExitBlob{}, errors.Wrap(err, "http new get request")
}

exitAuthData := FullExitAuthBlob{
LockHash: lockHash,
ValidatorPubkey: valPubkeyBytes,
Expand All @@ -172,28 +150,15 @@ func (c Client) GetFullExit(ctx context.Context, valPubkey string, lockHash []by
return ExitBlob{}, errors.Wrap(err, "k1 sign")
}

req.Header.Set("Authorization", bearerString(lockHashSignature))
req.Header.Set("Content-Type", "application/json")

resp, err := http.DefaultClient.Do(req)
respBody, err := httpGet(ctx, u, map[string]string{"Authorization": bearerString(lockHashSignature)})
if err != nil {
return ExitBlob{}, errors.Wrap(err, "http get error")
}

if resp.StatusCode != http.StatusOK {
if resp.StatusCode == http.StatusNotFound {
return ExitBlob{}, ErrNoExit
}

return ExitBlob{}, errors.New("http error", z.Int("status_code", resp.StatusCode))
return ExitBlob{}, errors.Wrap(err, "http Obol API GET request")
}

defer func() {
_ = resp.Body.Close()
}()
defer respBody.Close()

var er FullExitResponse
if err := json.NewDecoder(resp.Body).Decode(&er); err != nil {
if err := json.NewDecoder(respBody).Decode(&er); err != nil {
return ExitBlob{}, errors.Wrap(err, "json unmarshal error")
}

Expand Down
2 changes: 1 addition & 1 deletion cmd/cmd.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ func New() *cobra.Command {
),
newExitCmd(
newListActiveValidatorsCmd(runListActiveValidatorsCmd),
newSubmitPartialExitCmd(runSignPartialExit),
newSignPartialExitCmd(runSignPartialExit),
newBcastFullExitCmd(runBcastFullExit),
newFetchExitCmd(runFetchExit),
),
Expand Down
2 changes: 1 addition & 1 deletion cmd/exit.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -192,7 +192,7 @@ func eth2Client(ctx context.Context, u []string, timeout time.Duration, forkVers
}

if _, err = cl.NodeVersion(ctx, &eth2api.NodeVersionOpts{}); err != nil {
return nil, errors.Wrap(err, "can't connect to beacon node")
return nil, errors.Wrap(err, "connect to beacon node")
}

return cl, nil
Expand Down
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