debug

package
v0.1.0 Latest Latest
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 Go to latest Published: Jan 19, 2021 License: BSD-3-Clause Imports: 37 Imported by: 0

Documentation

Overview

Package debug exports debug information for gopls.

Index

Constants

View Source 
const (
	PlainText = PrintMode(iota)
	Markdown
	HTML
)
View Source 
const Version = "master"

Version is a manually-updated mechanism for tracking versions.

Variables

View Source 
var BaseTemplate = template.Must(template.New("").Parse(`
<html>
<head>
<title>{{template "title" .}}</title>
<style>
.profile-name{
	display:inline-block;
	width:6rem;
}
td.value {
  text-align: right;
}
ul.events {
	list-style-type: none;
}

</style>
{{block "head" .}}{{end}}
</head>
<body>
<a href="/">Main</a>
<a href="/info">Info</a>
<a href="/memory">Memory</a>
<a href="/metrics">Metrics</a>
<a href="/rpc">RPC</a>
<a href="/trace">Trace</a>
<hr>
<h1>{{template "title" .}}</h1>
{{block "body" .}}
Unknown page
{{end}}
</body>
</html>

{{define "cachelink"}}<a href="/cache/{{.}}">Cache {{.}}</a>{{end}}
{{define "clientlink"}}<a href="/client/{{.}}">Client {{.}}</a>{{end}}
{{define "serverlink"}}<a href="/server/{{.}}">Server {{.}}</a>{{end}}
{{define "sessionlink"}}<a href="/session/{{.}}">Session {{.}}</a>{{end}}
{{define "viewlink"}}<a href="/view/{{.}}">View {{.}}</a>{{end}}
{{define "filelink"}}<a href="/file/{{.Session}}/{{.FileIdentity.Hash}}">{{.FileIdentity.URI}}</a>{{end}}
`)).Funcs(template.FuncMap{
	"fuint64":  fuint64,
	"fuint32":  fuint32,
	"fcontent": fcontent,
	"localAddress": func(s string) string {

		host, port, err := net.SplitHostPort(s)
		if err != nil {
			return s
		}
		ip := net.ParseIP(host)
		if ip == nil {
			return s
		}
		if ip.IsLoopback() || ip.IsUnspecified() {
			return "localhost:" + port
		}
		return s
	},
	"options": func(s *cache.Session) []string {
		return showOptions(s.Options())
	},
})
View Source 
var CacheTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Cache {{.ID}}{{end}}
{{define "body"}}
<h2>memoize.Store entries</h2>
<ul>{{range $k,$v := .MemStats}}<li>{{$k}} - {{$v}}</li>{{end}}</ul>
<h2>Per-package usage - not accurate, for guidance only</h2>
{{.PackageStats true}}
{{end}}
`))
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var ClientTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Client {{.Session.ID}}{{end}}
{{define "body"}}
Using session: <b>{{template "sessionlink" .Session.ID}}</b><br>
{{if .DebugAddress}}Debug this client at: <a href="http://{{localAddress .DebugAddress}}">{{localAddress .DebugAddress}}</a><br>{{end}}
Logfile: {{.Logfile}}<br>
Gopls Path: {{.GoplsPath}}<br>
{{end}}
`))
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var DebugTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}GoPls Debug pages{{end}}
{{define "body"}}
<a href="/debug/pprof">Profiling</a>
{{end}}
`))
View Source 
var FileTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Overlay {{.FileIdentity.Hash}}{{end}}
{{define "body"}}
{{with .}}
	From: <b>{{template "sessionlink" .Session}}</b><br>
	URI: <b>{{.URI}}</b><br>
	Identifier: <b>{{.FileIdentity.Hash}}</b><br>
	Version: <b>{{.Version}}</b><br>
	Kind: <b>{{.Kind}}</b><br>
{{end}}
<h3>Contents</h3>
<pre>{{fcontent .Read}}</pre>
{{end}}
`))
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var InfoTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}GoPls version information{{end}}
{{define "body"}}
{{.}}
{{end}}
`))
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var MainTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}GoPls server information{{end}}
{{define "body"}}
<h2>Caches</h2>
<ul>{{range .State.Caches}}<li>{{template "cachelink" .ID}}</li>{{end}}</ul>
<h2>Sessions</h2>
<ul>{{range .State.Sessions}}<li>{{template "sessionlink" .ID}} from {{template "cachelink" .Cache.ID}}</li>{{end}}</ul>
<h2>Views</h2>
<ul>{{range .State.Views}}<li>{{.Name}} is {{template "viewlink" .ID}} from {{template "sessionlink" .Session.ID}} in {{.Folder}}</li>{{end}}</ul>
<h2>Clients</h2>
<ul>{{range .State.Clients}}<li>{{template "clientlink" .Session.ID}}</li>{{end}}</ul>
<h2>Servers</h2>
<ul>{{range .State.Servers}}<li>{{template "serverlink" .ID}}</li>{{end}}</ul>
{{end}}
`))
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var MemoryTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}GoPls memory usage{{end}}
{{define "head"}}<meta http-equiv="refresh" content="5">{{end}}
{{define "body"}}
<h2>Stats</h2>
<table>
<tr><td class="label">Allocated bytes</td><td class="value">{{fuint64 .HeapAlloc}}</td></tr>
<tr><td class="label">Total allocated bytes</td><td class="value">{{fuint64 .TotalAlloc}}</td></tr>
<tr><td class="label">System bytes</td><td class="value">{{fuint64 .Sys}}</td></tr>
<tr><td class="label">Heap system bytes</td><td class="value">{{fuint64 .HeapSys}}</td></tr>
<tr><td class="label">Malloc calls</td><td class="value">{{fuint64 .Mallocs}}</td></tr>
<tr><td class="label">Frees</td><td class="value">{{fuint64 .Frees}}</td></tr>
<tr><td class="label">Idle heap bytes</td><td class="value">{{fuint64 .HeapIdle}}</td></tr>
<tr><td class="label">In use bytes</td><td class="value">{{fuint64 .HeapInuse}}</td></tr>
<tr><td class="label">Released to system bytes</td><td class="value">{{fuint64 .HeapReleased}}</td></tr>
<tr><td class="label">Heap object count</td><td class="value">{{fuint64 .HeapObjects}}</td></tr>
<tr><td class="label">Stack in use bytes</td><td class="value">{{fuint64 .StackInuse}}</td></tr>
<tr><td class="label">Stack from system bytes</td><td class="value">{{fuint64 .StackSys}}</td></tr>
<tr><td class="label">Bucket hash bytes</td><td class="value">{{fuint64 .BuckHashSys}}</td></tr>
<tr><td class="label">GC metadata bytes</td><td class="value">{{fuint64 .GCSys}}</td></tr>
<tr><td class="label">Off heap bytes</td><td class="value">{{fuint64 .OtherSys}}</td></tr>
</table>
<h2>By size</h2>
<table>
<tr><th>Size</th><th>Mallocs</th><th>Frees</th></tr>
{{range .BySize}}<tr><td class="value">{{fuint32 .Size}}</td><td class="value">{{fuint64 .Mallocs}}</td><td class="value">{{fuint64 .Frees}}</td></tr>{{end}}
</table>
{{end}}
`))
View Source 
var RPCTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}RPC Information{{end}}
{{define "body"}}
	<H2>Inbound</H2>
	{{template "rpcSection" .Inbound}}
	<H2>Outbound</H2>
	{{template "rpcSection" .Outbound}}
{{end}}
{{define "rpcSection"}}
	{{range .}}<P>
		<b>{{.Method}}</b> {{.Started}} <a href="/trace/{{.Method}}">traces</a> ({{.InProgress}} in progress)
		<br>
		<i>Latency</i> {{with .Latency}}{{.Mean}} ({{.Min}}<{{.Max}}){{end}}
		<i>By bucket</i> 0s {{range .Latency.Values}}{{if gt .Count 0}}<b>{{.Count}}</b> {{.Limit}} {{end}}{{end}}
		<br>
		<i>Received</i> {{.Received}} (avg. {{.ReceivedMean}})
		<i>Sent</i> {{.Sent}} (avg. {{.SentMean}})
		<br>
		<i>Result codes</i> {{range .Codes}}{{.Key}}={{.Count}} {{end}}
		</P>
	{{end}}
{{end}}
`))
View Source 
var ServerTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Server {{.ID}}{{end}}
{{define "body"}}
{{if .DebugAddress}}Debug this server at: <a href="http://{{localAddress .DebugAddress}}">{{localAddress .DebugAddress}}</a><br>{{end}}
Logfile: {{.Logfile}}<br>
Gopls Path: {{.GoplsPath}}<br>
{{end}}
`))
View Source 
var SessionTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Session {{.ID}}{{end}}
{{define "body"}}
From: <b>{{template "cachelink" .Cache.ID}}</b><br>
<h2>Views</h2>
<ul>{{range .Views}}<li>{{.Name}} is {{template "viewlink" .ID}} in {{.Folder}}</li>{{end}}</ul>
<h2>Overlays</h2>
<ul>{{range .Overlays}}<li>{{template "filelink" .}}</li>{{end}}</ul>
<h2>Options</h2>
{{range options .}}<p>{{.}}{{end}}
{{end}}
`))
View Source 
var TraceTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}Trace Information{{end}}
{{define "body"}}
	{{range .Traces}}<a href="/trace/{{.Name}}">{{.Name}}</a> last: {{.Last.Duration}}, longest: {{.Longest.Duration}}<br>{{end}}
	{{if .Selected}}
		<H2>{{.Selected.Name}}</H2>
		{{if .Selected.Last}}<H3>Last</H3><ul>{{template "details" .Selected.Last}}</ul>{{end}}
		{{if .Selected.Longest}}<H3>Longest</H3><ul>{{template "details" .Selected.Longest}}</ul>{{end}}
	{{end}}
{{end}}
{{define "details"}}
	<li>{{.Offset}} {{.Name}} {{.Duration}} {{.Tags}}</li>
	{{if .Events}}<ul class=events>{{range .Events}}<li>{{.Offset}} {{.Tags}}</li>{{end}}</ul>{{end}}
	{{if .Children}}<ul>{{range .Children}}{{template "details" .}}{{end}}</ul>{{end}}
{{end}}
`))
View Source 
var ViewTmpl = template.Must(template.Must(BaseTemplate.Clone()).Parse(`
{{define "title"}}View {{.ID}}{{end}}
{{define "body"}}
Name: <b>{{.Name}}</b><br>
Folder: <b>{{.Folder}}</b><br>
From: <b>{{template "sessionlink" .Session.ID}}</b><br>
<h2>Environment</h2>
<ul>{{range .Options.Env}}<li>{{.}}</li>{{end}}</ul>
{{end}}
`))

Functions

func PrintVersionInfo 

func PrintVersionInfo(ctx context.Context, w io.Writer, verbose bool, mode PrintMode)

PrintVersionInfo writes version information to w, using the output format specified by mode. verbose controls whether additional information is written, including section headers.

func StdTrace 

func StdTrace(exporter event.Exporter) event.Exporter

func WithInstance 

func WithInstance(ctx context.Context, workdir, agent string) context.Context

WithInstance creates debug instance ready for use using the supplied configuration and stores it in the returned context.

Types

type Client 

type Client struct {
	Session      *cache.Session
	DebugAddress string
	Logfile      string
	GoplsPath    string
	ServerID     string
}

A Client is an incoming connection from a remote client.

type Instance 

type Instance struct {
	Logfile              string
	StartTime            time.Time
	ServerAddress        string
	DebugAddress         string
	ListenedDebugAddress string
	Workdir              string
	OCAgentConfig        string

	LogWriter io.Writer

	State *State
	// contains filtered or unexported fields
}

An Instance holds all debug information associated with a gopls instance.

func GetInstance 

func GetInstance(ctx context.Context) *Instance

func (*Instance) MonitorMemory 

func (i *Instance) MonitorMemory(ctx context.Context)

MonitorMemory starts recording memory statistics each second.

func (*Instance) PrintServerInfo 

func (i *Instance) PrintServerInfo(ctx context.Context, w io.Writer)

PrintServerInfo writes HTML debug info to w for the Instance.

func (*Instance) Serve 

func (i *Instance) Serve(ctx context.Context) error

Serve starts and runs a debug server in the background. It also logs the port the server starts on, to allow for :0 auto assigned ports.

func (*Instance) SetLogFile 

func (i *Instance) SetLogFile(logfile string, isDaemon bool) (func(), error)

SetLogFile sets the logfile for use with this instance.

type Module 

type Module struct {
	ModuleVersion
	Replace *ModuleVersion `json:"replace,omitempty"`
}

type ModuleVersion 

type ModuleVersion struct {
	Path    string `json:"path,omitempty"`
	Version string `json:"version,omitempty"`
	Sum     string `json:"sum,omitempty"`
}

type PrintMode 

type PrintMode int

type Rpcs 

type Rpcs struct {
	Inbound  []*rpcStats // stats for incoming lsp rpcs sorted by method name
	Outbound []*rpcStats // stats for outgoing lsp rpcs sorted by method name
	// contains filtered or unexported fields
}

func (*Rpcs) ProcessEvent 

func (r *Rpcs) ProcessEvent(ctx context.Context, ev core.Event, lm label.Map) context.Context

type Server 

type Server struct {
	ID           string
	DebugAddress string
	Logfile      string
	GoplsPath    string
	ClientID     string
}

A Server is an outgoing connection to a remote LSP server.

type ServerVersion 

type ServerVersion struct {
	Module
	Deps []*Module `json:"deps,omitempty"`
}

ServerVersion is the format used by gopls to report its version to the client. This format is structured so that the client can parse it easily.

func VersionInfo 

func VersionInfo() *ServerVersion

VersionInfo returns the build info for the gopls process. If it was not built in module mode, we return a GOPATH-specific message with the hardcoded version.

type State 

type State struct {
	// contains filtered or unexported fields
}

State holds debugging information related to the server state.

func (*State) Cache 

func (st *State) Cache(id string) *cache.Cache

Cache returns the Cache that matches the supplied id.

func (*State) Caches 

func (st *State) Caches() []*cache.Cache

Caches returns the set of Cache objects currently being served.

func (*State) Client 

func (st *State) Client(id string) *Client

Client returns the Client matching the supplied id.

func (*State) Clients 

func (st *State) Clients() []*Client

Clients returns the set of Clients currently being served.

func (*State) Servers 

func (st *State) Servers() []*Server

Servers returns the set of Servers the instance is currently connected to.

func (*State) Session 

func (st *State) Session(id string) *cache.Session

Session returns the Session that matches the supplied id.

func (*State) Sessions 

func (st *State) Sessions() []*cache.Session

Sessions returns the set of Session objects currently being served.

func (*State) View 

func (st *State) View(id string) *cache.View

View returns the View that matches the supplied id.

func (*State) Views 

func (st *State) Views() []*cache.View

Views returns the set of View objects currently being served.

type TraceResults 

type TraceResults struct {
	Traces   []*traceSet
	Selected *traceSet
}

Source Files

View all Source files

Directories

Path Synopsis
Package log provides helper methods for exporting log events to the internal/event package.
 Package log provides helper methods for exporting log events to the internal/event package.
Package tag provides the labels used for telemetry throughout gopls.
 Package tag provides the labels used for telemetry throughout gopls.

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