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feat(rules): add post-request rules system with response manipulation (#160)

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* Add comprehensive post-request rules support for response phase
* Enable response body, status, and header manipulation via set commands
* Refactor command handlers to support both request and response phases
* Implement response modifier system for post-request template execution
* Support response-based rule matching with status and header checks
* Add comprehensive benchmarks for matcher performance
* Refactor authentication and proxying commands for unified error handling
* Support negated conditions with !
* Enhance error handling, error formatting and validation
* Routes: add `rule_file` field with rule preset support
* Environment variable substitution: now supports variables without `GODOXY_` prefix

* new conditions:
  * `on resp_header <key> [<value>]`
  * `on status <status>`
* new commands:
  * `require_auth`
  * `set resp_header <key> <template>`
  * `set resp_body <template>`
  * `set status <code>`
  * `log <level> <path> <template>`
  * `notify <level> <provider> <title_template> <body_template>`
This commit is contained in:
Yuzerion
2025-10-14 23:53:06 +08:00
committed by GitHub
parent 19968834d2
commit 53f3397b7a
41 changed files with 4425 additions and 528 deletions
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24
internal/route/rules/parser.go
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@@ -3,9 +3,9 @@ package rules
import (
"bytes"
"fmt"
"os"
"unicode"
"github.com/yusing/goutils/env"
gperr "github.com/yusing/goutils/errs"
)
@@ -33,7 +33,7 @@ func parse(v string) (subject string, args []string, err gperr.Error) {
brackets := 0
var envVar bytes.Buffer
var missingEnvVars bytes.Buffer
var missingEnvVars []string
inEnvVar := false
expectingBrace := false
@@ -70,6 +70,10 @@ func parse(v string) (subject string, args []string, err gperr.Error) {
escaped = false
continue
}
if expectingBrace && r != '{' && r != '$' { // not escaped and not env var
buf.WriteRune('$')
expectingBrace = false
}
switch r {
case '\\':
escaped = true
@@ -90,9 +94,11 @@ func parse(v string) (subject string, args []string, err gperr.Error) {
}
case '}':
if inEnvVar {
envValue, ok := os.LookupEnv(envVar.String())
// NOTE: use env.LookupEnv instead of os.LookupEnv to support environment variable prefixes
// like ${API_ADDR} will lookup for GODOXY_API_ADDR, GOPROXY_API_ADDR and API_ADDR.
envValue, ok := env.LookupEnv(envVar.String())
if !ok {
fmt.Fprintf(&missingEnvVars, "%q, ", envVar.String())
missingEnvVars = append(missingEnvVars, envVar.String())
} else {
buf.WriteString(envValue)
}
@@ -140,15 +146,21 @@ func parse(v string) (subject string, args []string, err gperr.Error) {
}
}
if expectingBrace {
buf.WriteRune('$')
}
if quote != 0 {
err = ErrUnterminatedQuotes
} else if brackets != 0 {
err = ErrUnterminatedBrackets
} else if inEnvVar {
err = ErrUnterminatedEnvVar
} else {
flush(false)
}
if missingEnvVars.Len() > 0 {
err = gperr.Join(err, ErrEnvVarNotFound.Subject(missingEnvVars.String()))
if len(missingEnvVars) > 0 {
err = gperr.Join(err, ErrEnvVarNotFound.With(gperr.Multiline().AddStrings(missingEnvVars...)))
}
return subject, args, err
}