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chore: import upstream snapshot with attribution

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2026-07-13 12:47:58 +08:00
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packages/connect-python/.gitignore
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bin
packages/connect-python/LICENSE
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Apache License
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To apply the Apache License to your work, attach the following
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packages/connect-python/Makefile
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PY = python -m
plugin = protoc-gen-connect-python
dev:
$(PY) pip install -r requirements-dev.txt
fmt:
$(PY) ruff format src
lint:
$(PY) ruff check src
clean:
rm -f bin/protoc-gen-connect-python
rm -rf dist
upload: clean
$(PY) build
$(PY) twine upload --repository=connect-python dist/*
bin/$(plugin): $(wildcard cmd/$(plugin)/*.go) pyproject.toml Makefile
go install -ldflags "-w -s" ./cmd/$(plugin)
.PHONY: dev fmt lint upload clean build
build:
make bin/protoc-gen-connect-python
packages/connect-python/README.md
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🚧 Currently pending [an open RFC to be moved into the Connect RPC org](https://github.com/connectrpc/connectrpc.com/pull/71). Please show support. 🚧
---
# connect-python
Python client implementation for the [Connect](https://connect.build) RPC protocol.
packages/connect-python/cmd/protoc-gen-connect-python/main.go
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package main
import (
"fmt"
"io"
"os"
"path/filepath"
"regexp"
"sort"
"strings"
log "golang.org/x/exp/slog"
"google.golang.org/protobuf/proto"
descriptor "google.golang.org/protobuf/types/descriptorpb"
"google.golang.org/protobuf/types/pluginpb"
)
const pluginVersion = "0.1.0.dev2"
func init() {
ll := log.New(log.NewTextHandler(os.Stderr, &log.HandlerOptions{
Level: log.LevelDebug,
ReplaceAttr: func(groups []string, a log.Attr) log.Attr {
if a.Key == log.TimeKey && len(groups) == 0 {
return log.Attr{}
}
return a
},
}))
log.SetDefault(ll.With(log.Int("pid", os.Getpid())))
}
func main() {
if len(os.Args) == 2 && os.Args[1] == "--version" {
fmt.Fprintln(os.Stdout, pluginVersion)
os.Exit(0)
}
f := func(plugin *Plugin) error {
for _, f := range plugin.filesToGenerate {
generate(plugin, f)
}
return nil
}
if err := run(f); err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", filepath.Base(os.Args[0]), err)
os.Exit(1)
}
}
func run(f func(*Plugin) error) error {
in, err := io.ReadAll(os.Stdin)
if err != nil {
return err
}
req := &pluginpb.CodeGeneratorRequest{}
if err := proto.Unmarshal(in, req); err != nil {
return err
}
gen, err := newPlugin(req)
if err != nil {
return err
}
if err := f(gen); err != nil {
gen.Error(err)
}
resp := gen.Response()
out, err := proto.Marshal(resp)
if err != nil {
return err
}
_, err = os.Stdout.Write(out)
return err
}
func newPlugin(req *pluginpb.CodeGeneratorRequest) (*Plugin, error) {
gen := &Plugin{
request: req,
filesByPackage: make(map[string]*descriptor.FileDescriptorProto),
filesByPath: make(map[string]*descriptor.FileDescriptorProto),
messagesByType: make(map[string]*descriptor.DescriptorProto),
}
for _, f := range gen.request.ProtoFile {
name := f.GetName()
pkg := f.GetPackage()
log.Debug("ProtoFile",
log.String("name", name),
log.String("pkg", pkg),
)
// if _, ok := gen.filesByPackage[pkg]; ok {
// return nil, fmt.Errorf("duplicate package: %q", name)
// }
gen.filesByPackage[pkg] = f
if _, ok := gen.filesByPath[name]; ok {
return nil, fmt.Errorf("duplicate file name: %q", name)
}
gen.filesByPath[name] = f
for _, msg := range f.GetMessageType() {
msgKey := f.GetPackage() + "." + msg.GetName()
if _, ok := gen.messagesByType[msgKey]; ok {
return nil, fmt.Errorf("duplicate message: %q", msgKey)
}
gen.messagesByType[msgKey] = msg
log.Debug("MessageType",
log.String("name", msgKey),
)
}
gen.files = append(gen.files, f)
}
for _, name := range req.FileToGenerate {
if f, ok := gen.filesByPath[name]; ok {
log.Debug("FileToGenerate",
log.String("name", name),
log.Any("deps", f.Dependency),
log.Int("services", len(f.Service)),
)
if len(f.Service) > 0 {
gen.filesToGenerate = append(gen.filesToGenerate, f)
}
} else {
return nil, fmt.Errorf("missing file: %q", name)
}
}
return gen, nil
}
type Plugin struct {
request *pluginpb.CodeGeneratorRequest
files []*descriptor.FileDescriptorProto
filesByPackage map[string]*descriptor.FileDescriptorProto
filesByPath map[string]*descriptor.FileDescriptorProto
messagesByType map[string]*descriptor.DescriptorProto
filesToGenerate []*descriptor.FileDescriptorProto
generatedFiles []*pluginpb.CodeGeneratorResponse_File
err error
}
func (gen *Plugin) Response() *pluginpb.CodeGeneratorResponse {
resp := &pluginpb.CodeGeneratorResponse{}
if gen.err != nil {
resp.Error = Ptr(gen.err.Error())
return resp
}
resp.File = gen.generatedFiles
return resp
}
func (gen *Plugin) Error(err error) {
if gen.err == nil {
gen.err = err
}
}
func Ptr[T any](v T) *T {
return &v
}
func print(buf *strings.Builder, tpl string, args ...interface{}) {
buf.WriteString(fmt.Sprintf(tpl, args...))
buf.WriteByte('\n')
}
func getPackage(path string) string {
return strings.ReplaceAll(filepath.Dir(path), "/", ".")
}
func getModule(path string) string {
path = filepath.Base(path)
ext := filepath.Ext(path)
return strings.TrimSuffix(path, ext)
}
func getProtoModule(path string) string {
return getModule(path) + "_pb2"
}
func getConnectModule(path string) string {
return getModule(path) + "_connect"
}
func getProtoModuleAlias(path string) string {
path = getPackage(path) + "." + getProtoModule(path)
path = strings.ReplaceAll(path, "_", "__")
path = strings.ReplaceAll(path, ".", "_dot_")
return path
}
func getServiceName(svc *descriptor.ServiceDescriptorProto) string {
return svc.GetName() + "Name"
}
func getServiceClient(svc *descriptor.ServiceDescriptorProto) string {
return svc.GetName() + "Client"
}
func getServiceBasePath(file *descriptor.FileDescriptorProto, svc *descriptor.ServiceDescriptorProto) string {
return file.GetPackage() + "." + svc.GetName()
}
func getMethodProperty(m *descriptor.MethodDescriptorProto) string {
return "_" + toSnakeCase(m.GetName())
}
func getMethodType(m *descriptor.MethodDescriptorProto) string {
switch {
case m.GetClientStreaming() && m.GetServerStreaming():
return "bidi_stream"
case m.GetClientStreaming():
return "client_stream"
case m.GetServerStreaming():
return "server_stream"
default:
return "unary"
}
}
func splitPackageType(path string) (string, string) {
lastDot := strings.LastIndexByte(path, '.')
return path[:lastDot], path[lastDot+1:]
}
func resolveMessageFromMethod(gen *Plugin, m *descriptor.MethodDescriptorProto) (string, string) {
fullyQualifiedName := m.GetOutputType()[1:] // strip prefixed "."
pkgName, msgName := splitPackageType(fullyQualifiedName)
filename := gen.filesByPackage[pkgName].GetName()
return filename, msgName
}
func resolveInputFromMethod(gen *Plugin, m *descriptor.MethodDescriptorProto) (string, string) {
fullyQualifiedName := m.GetInputType()[1:] // strip prefixed "."
pkgName, msgName := splitPackageType(fullyQualifiedName)
filename := gen.filesByPackage[pkgName].GetName()
return filename, msgName
}
func getResponseType(gen *Plugin, m *descriptor.MethodDescriptorProto) string {
filename, msgName := resolveMessageFromMethod(gen, m)
log.Debug("ResponseType",
log.String("msg", msgName),
log.String("import", filename),
log.String("alias", getProtoModuleAlias(filename)),
)
return getProtoModuleAlias(filename) + "." + msgName
}
func getRequestType(gen *Plugin, m *descriptor.MethodDescriptorProto) string {
filename, msgName := resolveInputFromMethod(gen, m)
log.Debug("RequestType",
log.String("msg", msgName),
log.String("import", filename),
log.String("alias", getProtoModuleAlias(filename)),
)
return getProtoModuleAlias(filename) + "." + msgName
}
var (
matchFirstCap = regexp.MustCompile("(.)([A-Z][a-z]+)")
matchAllCap = regexp.MustCompile("([a-z0-9])([A-Z])")
)
func toSnakeCase(str string) string {
snake := matchFirstCap.ReplaceAllString(str, "${1}_${2}")
snake = matchAllCap.ReplaceAllString(snake, "${1}_${2}")
return strings.ToLower(snake)
}
func generate(gen *Plugin, file *descriptor.FileDescriptorProto) {
filename := file.GetName()
dir := filepath.Dir(filename)
pkgName := getPackage(filename)
modName := getModule(filename)
log.Debug("Generate",
log.String("name", filename),
log.String("pkg", pkgName),
log.String("mod", modName),
)
b := new(strings.Builder)
depsUniq := make(map[string]struct{})
for _, svc := range file.Service {
for _, method := range svc.Method {
filename, _ := resolveMessageFromMethod(gen, method)
depsUniq[filename] = struct{}{}
}
}
deps := make([]string, 0, len(depsUniq))
for dep := range depsUniq {
deps = append(deps, dep)
}
sort.Strings(deps)
print(b, "# Code generated by protoc-gen-connect-python %s, DO NOT EDIT.", pluginVersion)
print(b, "from typing import Any, Generator, Coroutine, AsyncGenerator, Optional")
print(b, "from httpcore import ConnectionPool, AsyncConnectionPool")
print(b, "")
print(b, "import e2b_connect as connect")
if len(deps) > 0 {
print(b, "")
for _, dep := range deps {
print(b, "from %s import %s as %s", getPackage(dep), getProtoModule(dep), getProtoModuleAlias(dep))
}
}
print(b, "")
for _, svc := range file.Service {
print(b, `%s = "%s"`, getServiceName(svc), getServiceBasePath(file, svc))
}
for _, svc := range file.Service {
print(b, "")
print(b, "")
print(b, `class %s:`, getServiceClient(svc))
print(b, " def __init__(self, base_url: str, *, pool: Optional[ConnectionPool] = None, async_pool: Optional[AsyncConnectionPool] = None, compressor=None, json=False, **opts):")
if len(svc.Method) == 0 {
print(b, " pass")
continue
}
for _, method := range svc.Method {
print(b, " self.%s = connect.Client(", getMethodProperty(method))
print(b, " pool=pool,")
print(b, " async_pool=async_pool,")
print(b, ` url=f"{base_url}/{%s}/%s",`, getServiceName(svc), method.GetName())
print(b, ` response_type=%s,`, getResponseType(gen, method))
print(b, ` compressor=compressor,`)
print(b, ` json=json,`)
print(b, ` **opts`)
print(b, " )")
}
for _, method := range svc.Method {
print(b, "")
if method.GetServerStreaming() {
print(b, " def %s(self, req: %s , **opts) -> Generator[%s, Any, None]:", toSnakeCase(method.GetName()), getRequestType(gen, method), getResponseType(gen, method))
print(b, " return self.%s.call_%s(req, **opts)", getMethodProperty(method), getMethodType(method))
print(b, "")
print(b, " def a%s(self, req: %s , **opts) -> AsyncGenerator[%s, Any]:", toSnakeCase(method.GetName()), getRequestType(gen, method), getResponseType(gen, method))
print(b, " return self.%s.acall_%s(req, **opts)", getMethodProperty(method), getMethodType(method))
} else {
print(b, " def %s(self, req: %s, **opts) -> %s:", toSnakeCase(method.GetName()), getRequestType(gen, method), getResponseType(gen, method))
print(b, " return self.%s.call_%s(req, **opts)", getMethodProperty(method), getMethodType(method))
print(b, "")
print(b, " def a%s(self, req: %s, **opts) -> Coroutine[Any, Any, %s]:", toSnakeCase(method.GetName()), getRequestType(gen, method), getResponseType(gen, method))
print(b, " return self.%s.acall_%s(req, **opts)", getMethodProperty(method), getMethodType(method))
}
}
}
gen.generatedFiles = append(gen.generatedFiles, &pluginpb.CodeGeneratorResponse_File{
Name: Ptr(filepath.Join(dir, getConnectModule(filename)+".py")),
Content: Ptr(b.String()),
})
}
packages/connect-python/go.mod
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module go.withmatt.com/connect-python
go 1.22
require (
golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f
google.golang.org/protobuf v1.33.0
)
packages/connect-python/go.sum
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github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f h1:99ci1mjWVBWwJiEKYY6jWa4d2nTQVIEhZIptnrVb1XY=
golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f/go.mod h1:/lliqkxwWAhPjf5oSOIJup2XcqJaw8RGS6k3TGEc7GI=
google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
packages/connect-python/pyproject.toml
+35
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[project]
name = "connect-python"
version = "0.1.0.dev2"
authors = [{ email = "matt@ydekproductions.com" }]
description = "Client implementation for the Connect RPC protocol"
readme = "README.md"
requires-python = ">=3.12"
classifiers = [
"Programming Language :: Python :: 3",
"License :: OSI Approved :: Apache Software License",
"Operating System :: OS Independent",
]
dependencies = [
"protobuf",
"httpcore",
]
[tool.hatch.build]
include = [
"/src",
]
[tool.hatch.build.targets.wheel]
packages = ["src/connect"]
[project.urls]
"Homepage" = "https://github.com/mattrobenolt/connect-python"
"Bug Tracker" = "https://github.com/mattrobenolt/connect-python/issues"
[project.optional-dependencies]
http2 = ["h2"]
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
packages/connect-python/requirements-dev.txt
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-e .[http2]
ruff
build
twine