forked from buger/goreplay
/
settings.go
88 lines (65 loc) · 5.23 KB
/
settings.go
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package main
import (
"flag"
"fmt"
"log"
"os"
)
const (
VERSION = "0.9.4"
)
type AppSettings struct {
verbose bool
stats bool
splitOutput bool
inputDummy MultiOption
outputDummy MultiOption
inputTCP MultiOption
outputTCP MultiOption
outputTCPStats bool
inputFile MultiOption
outputFile MultiOption
inputRAW MultiOption
inputHTTP MultiOption
outputHTTP MultiOption
outputHTTPConfig HTTPOutputConfig
modifierConfig HTTPModifierConfig
}
var Settings AppSettings = AppSettings{}
func usage() {
fmt.Printf("Gor is a simple http traffic replication tool written in Go. Its main goal is to replay traffic from production servers to staging and dev environments.\nProject page: https://github.com/buger/gor\nAuthor: <Leonid Bugaev> leonsbox@gmail.com\nCurrent Version: %s\n\n", VERSION)
flag.PrintDefaults()
os.Exit(2)
}
func init() {
flag.Usage = usage
flag.BoolVar(&Settings.verbose, "verbose", false, "Turn on verbose/debug output")
flag.BoolVar(&Settings.stats, "stats", false, "Turn on queue stats output")
flag.BoolVar(&Settings.splitOutput, "split-output", false, "By default each output gets same traffic. If set to `true` it splits traffic equally among all outputs.")
flag.Var(&Settings.inputDummy, "input-dummy", "Used for testing outputs. Emits 'Get /' request every 1s")
flag.Var(&Settings.outputDummy, "output-dummy", "Used for testing inputs. Just prints data coming from inputs.")
flag.Var(&Settings.inputTCP, "input-tcp", "Used for internal communication between Gor instances. Example: \n\t# Receive requests from other Gor instances on 28020 port, and redirect output to staging\n\tgor --input-tcp :28020 --output-http staging.com")
flag.Var(&Settings.outputTCP, "output-tcp", "Used for internal communication between Gor instances. Example: \n\t# Listen for requests on 80 port and forward them to other Gor instance on 28020 port\n\tgor --input-raw :80 --output-tcp replay.local:28020")
flag.BoolVar(&Settings.outputTCPStats, "output-tcp-stats", false, "Report TCP output queue stats to console every 5 seconds.")
flag.Var(&Settings.inputFile, "input-file", "Read requests from file: \n\tgor --input-file ./requests.gor --output-http staging.com")
flag.Var(&Settings.outputFile, "output-file", "Write incoming requests to file: \n\tgor --input-raw :80 --output-file ./requests.gor")
flag.Var(&Settings.inputRAW, "input-raw", "Capture traffic from given port (use RAW sockets and require *sudo* access):\n\t# Capture traffic from 8080 port\n\tgor --input-raw :8080 --output-http staging.com")
flag.Var(&Settings.inputHTTP, "input-http", "Read requests from HTTP, should be explicitly sent from your application:\n\t# Listen for http on 9000\n\tgor --input-http :9000 --output-http staging.com")
flag.Var(&Settings.outputHTTP, "output-http", "Forwards incoming requests to given http address.\n\t# Redirect all incoming requests to staging.com address \n\tgor --input-raw :80 --output-http http://staging.com")
flag.IntVar(&Settings.outputHTTPConfig.workers, "output-http-workers", 0, "Gor uses dynamic worker scaling by default. Enter a number to run a set number of workers.")
flag.IntVar(&Settings.outputHTTPConfig.redirectLimit, "output-http-redirects", 0, "Enable how often redirects should be followed.")
flag.Var(&Settings.modifierConfig.headers, "output-http-header", "Inject additional headers to http reqest:\n\tgor --input-raw :8080 --output-http staging.com --output-http-header 'User-Agent: Gor'")
flag.Var(&Settings.modifierConfig.methods, "output-http-method", "Whitelist of HTTP methods to replay. Anything else will be dropped:\n\tgor --input-raw :8080 --output-http staging.com --output-http-method GET --output-http-method OPTIONS")
flag.Var(&Settings.modifierConfig.urlRegexp, "output-http-url-regexp", "A regexp to match requests against. Anything else will be dropped:\n\t gor --input-raw :8080 --output-http staging.com --output-http-url-regexp ^www.")
flag.Var(&Settings.modifierConfig.urlRewrite, "output-http-rewrite-url", "Rewrite the requst url based on a mapping:\n\tgor --input-raw :8080 --output-http staging.com --output-http-rewrite-url /xml_test/interface.php:/api/service.do")
flag.Var(&Settings.modifierConfig.headerFilters, "output-http-header-filter", "A regexp to match a specific header against. Requests with non-matching headers will be dropped:\n\t gor --input-raw :8080 --output-http staging.com --output-http-header-filter api-version:^v1")
flag.Var(&Settings.modifierConfig.headerHashFilters, "output-http-header-hash-filter", "Takes a fraction of requests, consistently taking or rejecting a request based on the FNV32-1A hash of a specific header. The fraction must have a denominator that is a power of two:\n\t gor --input-raw :8080 --output-http staging.com --output-http-header-hash-filter user-id:1/4")
flag.BoolVar(&Settings.outputHTTPConfig.stats, "output-http-stats", false, "Report http output queue stats to console every 5 seconds.")
flag.StringVar(&Settings.outputHTTPConfig.elasticSearch, "output-http-elasticsearch", "", "Send request and response stats to ElasticSearch:\n\tgor --input-raw :8080 --output-http staging.com --output-http-elasticsearch 'es_host:api_port/index_name'")
}
func Debug(args ...interface{}) {
if Settings.verbose {
log.Print("[DEBUG] ")
log.Println(args...)
}
}