mirror of
https://github.com/vxcontrol/langchaingo.git
synced 2026-07-21 00:45:22 -04:00
Travis Cline
94f289e427
* httprr: add HTTP record/replay framework with default API key scrubbing - Add httprr package for deterministic HTTP testing - Implement default scrubbing for common API key headers * httputil: reorganize transport layer and add logging infrastructure - Replace debug transports with structured logging via slog - Add comprehensive user agent handling with version info - Improve transport layer organization and documentation - Maintain backward compatibility with deprecated types - Add JSON debug transport with color output support
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package httputil
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import (
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"fmt"
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"runtime"
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"runtime/debug"
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"strings"
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"sync"
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)
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var (
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userAgent string
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userAgentOnce sync.Once
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)
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// UserAgent returns the default User-Agent string for LangChainGo HTTP clients.
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// Format: program/version langchaingo/version Go/version (GOOS GOARCH)
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// Example: "openai-chat-example/devel langchaingo/v0.1.8 Go/go1.21.0 (darwin arm64)"
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func UserAgent() string {
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userAgentOnce.Do(func() {
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parts := []string{}
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// Get build info once
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if info, ok := debug.ReadBuildInfo(); ok {
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// Add program name if available
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if info.Main.Path != "" && info.Main.Path != "command-line-arguments" {
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name := info.Main.Path[strings.LastIndex(info.Main.Path, "/")+1:]
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parts = append(parts, name+"/devel")
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}
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// Add langchaingo version
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langchainVer := "devel"
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for _, dep := range info.Deps {
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if dep.Path == "github.com/tmc/langchaingo" {
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langchainVer = strings.Trim(dep.Version, "()")
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break
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}
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}
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parts = append(parts, "langchaingo/"+langchainVer)
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} else {
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// Fallback if no build info
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parts = append(parts, "langchaingo/devel")
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}
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// Add Go version and platform
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parts = append(parts, fmt.Sprintf("Go/%s", runtime.Version()))
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parts = append(parts, fmt.Sprintf("(%s %s)", runtime.GOOS, runtime.GOARCH))
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userAgent = strings.Join(parts, " ")
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})
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return userAgent
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}
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