[server] Add support for CPU and memory profiling, exiting on SIGTERM and SIGINT
This commit is contained in:
Ciprian Dorin Craciun
parent
e922169912
commit
eafe406c1e
1 changed files with 91 additions and 16 deletions
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@ -5,11 +5,14 @@ package main
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import "bytes"
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import "flag"
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import "io"
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import "io/ioutil"
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import "log"
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import "net/http"
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import "os"
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import "os/signal"
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import "runtime"
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import "runtime/pprof"
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import "syscall"
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import "time"
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// import "github.com/colinmarc/cdb"
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@ -247,6 +250,9 @@ func main_0 () (error) {
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var _preload bool
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var _debug bool
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var _profileCpu string
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var _profileMem string
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{
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_flags := flag.NewFlagSet ("cdb-http-server", flag.ContinueOnError)
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@ -255,6 +261,9 @@ func main_0 () (error) {
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_preload_0 := _flags.Bool ("preload", false, "")
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_debug_0 := _flags.Bool ("debug", false, "")
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_profileCpu_0 := _flags.String ("profile-cpu", "", "<path>")
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_profileMem_0 := _flags.String ("profile-mem", "", "<path>")
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FlagsParse (_flags, 0, 0)
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_bind = *_bind_0
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@ -262,6 +271,9 @@ func main_0 () (error) {
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_preload = *_preload_0
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_debug = *_debug_0
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_profileCpu = *_profileCpu_0
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_profileMem = *_profileMem_0
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if _bind == "" {
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AbortError (nil, "[eefe1a38] expected bind address argument!")
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}
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@ -271,46 +283,109 @@ func main_0 () (error) {
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}
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var _cdbFile io.ReaderAt
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var _cdbReader *cdb.CDB
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{
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var _file *os.File
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if _file_0, _error := os.Open (_archive); _error == nil {
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_file = _file_0
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var _cdbFile *os.File
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if _cdbFile_0, _error := os.Open (_archive); _error == nil {
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_cdbFile = _cdbFile_0
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} else {
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AbortError (_error, "[9e0b5ed3] failed opening archive!")
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}
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if _preload {
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log.Printf ("[ii] [922ca187] preloading archive...\n")
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if _data, _error := ioutil.ReadAll (_file); _error == nil {
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_cdbFile = bytes.NewReader (_data)
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var _cdbData []byte
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if _cdbData_0, _error := ioutil.ReadAll (_cdbFile); _error == nil {
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_cdbData = _cdbData_0
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} else {
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AbortError (_error, "[73039784] failed preloading archive!")
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}
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if _cdbReader_0, _error := cdb.NewFromBufferWithHasher (_cdbData, nil); _error == nil {
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_cdbReader = _cdbReader_0
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} else {
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AbortError (_error, "[85234ba0] failed opening archive!")
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}
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} else {
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_cdbFile = _file
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if _cdbReader_0, _error := cdb.NewFromReaderWithHasher (_cdbFile, nil); _error == nil {
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_cdbReader = _cdbReader_0
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} else {
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AbortError (_error, "[85234ba0] failed opening archive!")
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}
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}
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}
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var _cdbReader *cdb.CDB
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if _cdbReader_0, _error := cdb.NewWithHasher (_cdbFile, nil); _error == nil {
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_cdbReader = _cdbReader_0
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} else {
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AbortError (_error, "[85234ba0] failed opening archive!")
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}
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_server := & server {
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httpServer : nil,
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cdbReader : _cdbReader,
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debug : _debug,
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}
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if _profileCpu != "" {
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log.Printf ("[ii] [9196ee90] profiling CPU to `%s`...\n", _profileCpu)
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_stream, _error := os.Create (_profileCpu)
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if _error != nil {
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AbortError (_error, "[fd4e0009] failed opening CPU profile!")
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}
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_error = pprof.StartCPUProfile (_stream)
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if _error != nil {
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AbortError (_error, "[ac721629] failed starting CPU profile!")
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}
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defer pprof.StopCPUProfile ()
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}
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if _profileMem != "" {
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log.Printf ("[ii] [9196ee90] profiling MEM to `%s`...\n", _profileMem)
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_stream, _error := os.Create (_profileMem)
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if _error != nil {
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AbortError (_error, "[907d08b5] failed opening MEM profile!")
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}
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_profile := pprof.Lookup ("heap")
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defer func () {
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runtime.GC ()
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if _profile != nil {
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if _error := _profile.WriteTo (_stream, 0); _error != nil {
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AbortError (_error, "[4b1e5112] failed writing MEM profile!")
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}
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} else {
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AbortError (nil, "[385dc8f0] failed loading MEM profile!")
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}
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_stream.Close ()
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} ()
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}
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_httpServer := & fasthttp.Server {
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Name : "cdb-http",
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Handler : _server.HandleHTTP,
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Concurrency : 4096,
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MaxRequestsPerConn : 16 * 1024,
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NoDefaultServerHeader : true,
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NoDefaultContentType : true,
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}
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_server.httpServer = _httpServer
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{
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_signals := make (chan os.Signal, 32)
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signal.Notify (_signals, syscall.SIGINT, syscall.SIGTERM)
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go func () () {
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<- _signals
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log.Printf ("[ii] [691cb695] shutingdown...\n")
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_server.httpServer.Shutdown ()
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} ()
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}
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log.Printf ("[ii] [f11e4e37] listening on `http://%s/`;\n", _bind)
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if _error := fasthttp.ListenAndServe (_bind, _server.HandleHTTP); _error != nil {
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if _error := _httpServer.ListenAndServe (_bind); _error != nil {
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AbortError (_error, "[44f45c67] failed starting server!")
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}
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defer log.Printf ("[ii] [a49175db] done!\n")
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return nil
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}
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