mirror of https://github.com/tailscale/tailscale/
feature/logtail: pull logtail + netlog out to modular features
Removes 434 KB from the minimal Linux binary, or ~3%. Primarily this comes from not linking in the zstd encoding code. Fixes #17323 Change-Id: I0a90de307dfa1ad7422db7aa8b1b46c782bfaaf7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>pull/17316/head
Brad Fitzpatrick
2 months ago
committed by
Brad Fitzpatrick
parent
e466488a2a
commit
11b770fbc9
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Code generated by gen.go; DO NOT EDIT.
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//go:build ts_omit_logtail
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package buildfeatures
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// HasLogTail is whether the binary was built with support for modular feature "upload logs to log.tailscale.com (debug logs for bug reports and also by network flow logs if enabled)".
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// Specifically, it's whether the binary was NOT built with the "ts_omit_logtail" build tag.
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// It's a const so it can be used for dead code elimination.
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const HasLogTail = false
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Code generated by gen.go; DO NOT EDIT.
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//go:build !ts_omit_logtail
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package buildfeatures
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// HasLogTail is whether the binary was built with support for modular feature "upload logs to log.tailscale.com (debug logs for bug reports and also by network flow logs if enabled)".
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// Specifically, it's whether the binary was NOT built with the "ts_omit_logtail" build tag.
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// It's a const so it can be used for dead code elimination.
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const HasLogTail = true
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Code generated by gen.go; DO NOT EDIT.
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//go:build ts_omit_netlog
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package buildfeatures
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// HasNetLog is whether the binary was built with support for modular feature "Network flow logging support".
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// Specifically, it's whether the binary was NOT built with the "ts_omit_netlog" build tag.
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// It's a const so it can be used for dead code elimination.
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const HasNetLog = false
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Code generated by gen.go; DO NOT EDIT.
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//go:build !ts_omit_netlog
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package buildfeatures
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// HasNetLog is whether the binary was built with support for modular feature "Network flow logging support".
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// Specifically, it's whether the binary was NOT built with the "ts_omit_netlog" build tag.
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// It's a const so it can be used for dead code elimination.
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const HasNetLog = true
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package logtail
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import (
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"io"
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"net/http"
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"time"
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"tailscale.com/tstime"
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"tailscale.com/types/logid"
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)
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// DefaultHost is the default host name to upload logs to when
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// Config.BaseURL isn't provided.
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const DefaultHost = "log.tailscale.com"
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const defaultFlushDelay = 2 * time.Second
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const (
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// CollectionNode is the name of a logtail Config.Collection
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// for tailscaled (or equivalent: IPNExtension, Android app).
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CollectionNode = "tailnode.log.tailscale.io"
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)
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type Config struct {
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Collection string // collection name, a domain name
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PrivateID logid.PrivateID // private ID for the primary log stream
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CopyPrivateID logid.PrivateID // private ID for a log stream that is a superset of this log stream
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BaseURL string // if empty defaults to "https://log.tailscale.com"
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HTTPC *http.Client // if empty defaults to http.DefaultClient
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SkipClientTime bool // if true, client_time is not written to logs
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LowMemory bool // if true, logtail minimizes memory use
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Clock tstime.Clock // if set, Clock.Now substitutes uses of time.Now
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Stderr io.Writer // if set, logs are sent here instead of os.Stderr
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StderrLevel int // max verbosity level to write to stderr; 0 means the non-verbose messages only
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Buffer Buffer // temp storage, if nil a MemoryBuffer
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CompressLogs bool // whether to compress the log uploads
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MaxUploadSize int // maximum upload size; 0 means using the default
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// MetricsDelta, if non-nil, is a func that returns an encoding
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// delta in clientmetrics to upload alongside existing logs.
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// It can return either an empty string (for nothing) or a string
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// that's safe to embed in a JSON string literal without further escaping.
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MetricsDelta func() string
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// FlushDelayFn, if non-nil is a func that returns how long to wait to
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// accumulate logs before uploading them. 0 or negative means to upload
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// immediately.
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//
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// If nil, a default value is used. (currently 2 seconds)
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FlushDelayFn func() time.Duration
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// IncludeProcID, if true, results in an ephemeral process identifier being
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// included in logs. The ID is random and not guaranteed to be globally
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// unique, but it can be used to distinguish between different instances
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// running with same PrivateID.
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IncludeProcID bool
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// IncludeProcSequence, if true, results in an ephemeral sequence number
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// being included in the logs. The sequence number is incremented for each
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// log message sent, but is not persisted across process restarts.
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IncludeProcSequence bool
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}
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build ts_omit_logtail
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package logtail
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import (
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"context"
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tslogger "tailscale.com/types/logger"
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"tailscale.com/types/logid"
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)
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// Noop implementations of everything when ts_omit_logtail is set.
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type Logger struct{}
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type Buffer any
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func Disable() {}
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func NewLogger(cfg Config, logf tslogger.Logf) *Logger {
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return &Logger{}
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}
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func (*Logger) Write(p []byte) (n int, err error) {
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return len(p), nil
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}
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func (*Logger) Logf(format string, args ...any) {}
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func (*Logger) Shutdown(ctx context.Context) error { return nil }
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func (*Logger) SetVerbosityLevel(level int) {}
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func (l *Logger) SetSockstatsLabel(label any) {}
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func (l *Logger) PrivateID() logid.PrivateID { return logid.PrivateID{} }
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func (l *Logger) StartFlush() {}
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func RegisterLogTap(dst chan<- string) (unregister func()) {
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return func() {}
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}
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func (*Logger) SetNetMon(any) {}
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@ -1,6 +1,8 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !ts_omit_netlog && !ts_omit_logtail
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// Package netlog provides a logger that monitors a TUN device and
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// periodically records any traffic into a log stream.
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package netlog
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@ -0,0 +1,13 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build ts_omit_netlog || ts_omit_logtail
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package netlog
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type Logger struct{}
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func (*Logger) Startup(...any) error { return nil }
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func (*Logger) Running() bool { return false }
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func (*Logger) Shutdown(any) error { return nil }
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func (*Logger) ReconfigRoutes(any) {}
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