/
server.go
310 lines (292 loc) · 7.93 KB
/
server.go
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/*----------------------------------------------------------------
* Copyright (c) ThoughtWorks, Inc.
* Licensed under the Apache License, Version 2.0
* See LICENSE in the project root for license information.
*----------------------------------------------------------------*/
package lang
import (
"context"
"encoding/json"
"fmt"
"log"
"os"
"runtime/debug"
gm "github.com/getgauge/gauge-proto/go/gauge_messages"
"github.com/getgauge/gauge/api/infoGatherer"
"github.com/getgauge/gauge/execution"
"github.com/getgauge/gauge/gauge"
"github.com/sourcegraph/jsonrpc2"
)
type infoProvider interface {
Init()
Steps(filterConcepts bool) []*gauge.Step
AllSteps(filterConcepts bool) []*gauge.Step
Concepts() []*gm.ConceptInfo
Params(file string, argType gauge.ArgType) []gauge.StepArg
Tags() []string
SearchConceptDictionary(string) *gauge.Concept
GetAvailableSpecDetails(specs []string) []*infoGatherer.SpecDetail
GetSpecDirs() []string
}
var provider infoProvider
type lspHandler struct {
jsonrpc2.Handler
}
type LangHandler struct {
}
type InitializeParams struct {
RootPath string `json:"rootPath,omitempty"`
Capabilities ClientCapabilities `json:"capabilities,omitempty"`
}
func newHandler() jsonrpc2.Handler {
return lspHandler{jsonrpc2.HandlerWithError((&LangHandler{}).handle)}
}
func (h lspHandler) Handle(ctx context.Context, conn *jsonrpc2.Conn, req *jsonrpc2.Request) {
go h.Handler.Handle(ctx, conn, req)
}
func (h *LangHandler) handle(ctx context.Context, conn *jsonrpc2.Conn, req *jsonrpc2.Request) (interface{}, error) {
defer recoverPanic(req)
return h.Handle(ctx, conn, req)
}
func (h *LangHandler) Handle(ctx context.Context, conn jsonrpc2.JSONRPC2, req *jsonrpc2.Request) (interface{}, error) {
switch req.Method {
case "initialize":
if err := cacheInitializeParams(req); err != nil {
logError(req, err.Error())
return nil, err
}
return gaugeLSPCapabilities(), nil
case "initialized":
err := registerFileWatcher(conn, ctx)
if err != nil {
logError(req, err.Error())
}
err = registerRunnerCapabilities(conn, ctx)
if err != nil {
logError(req, err.Error())
}
go publishDiagnostics(ctx, conn)
return nil, nil
case "shutdown":
return nil, killRunner()
case "exit":
if c, ok := conn.(*jsonrpc2.Conn); ok {
err := c.Close()
if err != nil {
logError(req, err.Error())
}
os.Exit(0)
}
return nil, nil
case "$/cancelRequest":
return nil, nil
case "textDocument/didOpen":
err := documentOpened(req, ctx, conn)
if err != nil {
logDebug(req, err.Error())
}
return nil, err
case "textDocument/didClose":
err := documentClosed(req, ctx, conn)
if err != nil {
logDebug(req, err.Error())
}
return nil, err
case "textDocument/didChange":
err := documentChange(req, ctx, conn)
if err != nil {
logDebug(req, err.Error())
}
return nil, err
case "workspace/didChangeWatchedFiles":
err := documentChangeWatchedFiles(req, ctx, conn)
if err != nil {
logDebug(req, err.Error())
}
return nil, err
case "textDocument/completion":
val, err := completion(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "completionItem/resolve":
val, err := resolveCompletion(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "textDocument/definition":
val, err := definition(req)
if err != nil {
logDebug(req, err.Error())
if e := showErrorMessageOnClient(ctx, conn, err); e != nil {
return nil, fmt.Errorf("unable to send '%s' error to LSP server. %s", err.Error(), e.Error())
}
}
return val, err
case "textDocument/formatting":
data, err := format(req)
if err != nil {
logDebug(req, err.Error())
e := showErrorMessageOnClient(ctx, conn, err)
if e != nil {
return nil, fmt.Errorf("unable to send '%s' error to LSP server. %s", err.Error(), e.Error())
}
}
return data, err
case "textDocument/codeLens":
val, err := codeLenses(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "textDocument/codeAction":
val, err := codeActions(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "textDocument/rename":
result, err := rename(ctx, conn, req)
if err != nil {
logDebug(req, err.Error())
e := showErrorMessageOnClient(ctx, conn, err)
if e != nil {
return nil, fmt.Errorf("unable to send '%s' error to LSP server. %s", err.Error(), e.Error())
}
return nil, err
}
return result, nil
case "textDocument/documentSymbol":
val, err := documentSymbols(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "workspace/symbol":
val, err := workspaceSymbols(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/stepReferences":
val, err := stepReferences(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/stepValueAt":
val, err := stepValueAt(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/scenarios":
val, err := scenarios(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/getImplFiles":
val, err := getImplFiles(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/putStubImpl":
if err := sendSaveFilesRequest(ctx, conn); err != nil {
logDebug(req, err.Error())
e := showErrorMessageOnClient(ctx, conn, err)
if e != nil {
return nil, fmt.Errorf("unable to send '%s' error to LSP server. %s", err.Error(), e.Error())
}
return nil, err
}
val, err := putStubImpl(req)
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/specs":
val, err := specs()
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/executionStatus":
val, err := execution.ReadLastExecutionResult()
if err != nil {
logDebug(req, err.Error())
}
return val, err
case "gauge/generateConcept":
if err := sendSaveFilesRequest(ctx, conn); err != nil {
e := showErrorMessageOnClient(ctx, conn, err)
if e != nil {
return nil, fmt.Errorf("unable to send '%s' error to LSP server. %s", err.Error(), e.Error())
}
return nil, err
}
return generateConcept(req)
case "gauge/getRunnerLanguage":
return lRunner.lspID, nil
case "gauge/specDirs":
return provider.GetSpecDirs(), nil
default:
return nil, nil
}
}
func cacheInitializeParams(req *jsonrpc2.Request) error {
var params InitializeParams
var err error
if err = json.Unmarshal(*req.Params, ¶ms); err != nil {
return err
}
clientCapabilities = params.Capabilities
return nil
}
func startLsp(logLevel string) (context.Context, *jsonrpc2.Conn) {
logInfo(nil, "LangServer: reading on stdin, writing on stdout")
var connOpt []jsonrpc2.ConnOpt
if logLevel == "debug" {
connOpt = append(connOpt, jsonrpc2.LogMessages(log.New(lspWriter{}, "", 0)))
}
ctx := context.Background()
return ctx, jsonrpc2.NewConn(ctx, jsonrpc2.NewBufferedStream(stdRWC{}, jsonrpc2.VSCodeObjectCodec{}), newHandler(), connOpt...)
}
func initializeRunner() error {
id, err := getLanguageIdentifier()
if err != nil || id == "" {
e := fmt.Errorf("There are version incompatibilities between Gauge and it's plugins in this project. Some features will not work as expected.")
logDebug(nil, "%s", e.Error())
return e
}
err = startRunner()
if err != nil {
logDebug(nil, "%s\nSome of the gauge lsp feature will not work as expected.", err.Error())
return err
}
lRunner.lspID = id
return nil
}
func Start(p infoProvider, logLevel string) {
provider = p
provider.Init()
err := initializeRunner()
ctx, conn := startLsp(logLevel)
if err != nil {
_ = showErrorMessageOnClient(ctx, conn, err)
}
initialize(ctx, conn)
<-conn.DisconnectNotify()
if killRunner() != nil {
logInfo(nil, "failed to kill runner with pid %d", lRunner.runner.Pid())
}
logInfo(nil, "Connection closed")
}
func recoverPanic(req *jsonrpc2.Request) {
if r := recover(); r != nil {
logFatal(req, "%v\n%s", r, string(debug.Stack()))
}
}