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Merge pull request 'Enable CLI driver of async session' (#49) from lash/async-driver into master

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Reviewed-on: urdt/ussd#49
This commit is contained in:
lash 2024-09-14 16:52:06 +02:00
commit b5d33a98f0
10 changed files with 848 additions and 100 deletions
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257
cmd/africastalking/main.go Normal file
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@ -0,0 +1,257 @@
package main
import (
"context"
"flag"
"fmt"
"net/http"
"os"
"os/signal"
"path"
"strconv"
"strings"
"syscall"
"git.defalsify.org/vise.git/asm"
"git.defalsify.org/vise.git/db"
fsdb "git.defalsify.org/vise.git/db/fs"
gdbmdb "git.defalsify.org/vise.git/db/gdbm"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/logging"
"git.defalsify.org/vise.git/resource"
"git.grassecon.net/urdt/ussd/internal/handlers"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
httpserver "git.grassecon.net/urdt/ussd/internal/http"
)
var (
logg = logging.NewVanilla()
scriptDir = path.Join("services", "registration")
)
type atRequestParser struct {}
func(arp *atRequestParser) GetSessionId(rq any) (string, error) {
rqv, ok := rq.(*http.Request)
if !ok {
return "", handlers.ErrInvalidRequest
}
if err := rqv.ParseForm(); err != nil {
return "", fmt.Errorf("failed to parse form data: %v", err)
}
phoneNumber := rqv.FormValue("phoneNumber")
if phoneNumber == "" {
return "", fmt.Errorf("no phone number found")
}
return phoneNumber, nil
}
func(arp *atRequestParser) GetInput(rq any) ([]byte, error) {
rqv, ok := rq.(*http.Request)
if !ok {
return nil, handlers.ErrInvalidRequest
}
if err := rqv.ParseForm(); err != nil {
return nil, fmt.Errorf("failed to parse form data: %v", err)
}
text := rqv.FormValue("text")
parts := strings.Split(text, "*")
if len(parts) == 0 {
return nil, fmt.Errorf("no input found")
}
return []byte(parts[len(parts)-1]), nil
}
func getFlags(fp string, debug bool) (*asm.FlagParser, error) {
flagParser := asm.NewFlagParser().WithDebug()
_, err := flagParser.Load(fp)
if err != nil {
return nil, err
}
return flagParser, nil
}
func getHandler(appFlags *asm.FlagParser, rs *resource.DbResource, userdataStore db.Db) (*ussd.Handlers, error) {
ussdHandlers, err := ussd.NewHandlers(appFlags, userdataStore)
if err != nil {
return nil, err
}
rs.AddLocalFunc("select_language", ussdHandlers.SetLanguage)
rs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
rs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
rs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
rs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
rs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
rs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
rs.AddLocalFunc("quit", ussdHandlers.Quit)
rs.AddLocalFunc("check_balance", ussdHandlers.CheckBalance)
rs.AddLocalFunc("validate_recipient", ussdHandlers.ValidateRecipient)
rs.AddLocalFunc("transaction_reset", ussdHandlers.TransactionReset)
rs.AddLocalFunc("max_amount", ussdHandlers.MaxAmount)
rs.AddLocalFunc("validate_amount", ussdHandlers.ValidateAmount)
rs.AddLocalFunc("reset_transaction_amount", ussdHandlers.ResetTransactionAmount)
rs.AddLocalFunc("get_recipient", ussdHandlers.GetRecipient)
rs.AddLocalFunc("get_sender", ussdHandlers.GetSender)
rs.AddLocalFunc("get_amount", ussdHandlers.GetAmount)
rs.AddLocalFunc("reset_incorrect", ussdHandlers.ResetIncorrectPin)
rs.AddLocalFunc("save_firstname", ussdHandlers.SaveFirstname)
rs.AddLocalFunc("save_familyname", ussdHandlers.SaveFamilyname)
rs.AddLocalFunc("save_gender", ussdHandlers.SaveGender)
rs.AddLocalFunc("save_location", ussdHandlers.SaveLocation)
rs.AddLocalFunc("save_yob", ussdHandlers.SaveYob)
rs.AddLocalFunc("save_offerings", ussdHandlers.SaveOfferings)
rs.AddLocalFunc("quit_with_balance", ussdHandlers.QuitWithBalance)
rs.AddLocalFunc("reset_account_authorized", ussdHandlers.ResetAccountAuthorized)
rs.AddLocalFunc("reset_allow_update", ussdHandlers.ResetAllowUpdate)
rs.AddLocalFunc("get_profile_info", ussdHandlers.GetProfileInfo)
rs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
rs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
rs.AddLocalFunc("set_reset_single_edit", ussdHandlers.SetResetSingleEdit)
rs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
return ussdHandlers, nil
}
func ensureDbDir(dbDir string) error {
err := os.MkdirAll(dbDir, 0700)
if err != nil {
return fmt.Errorf("state dir create exited with error: %v\n", err)
}
return nil
}
func getStateStore(dbDir string, ctx context.Context) (db.Db, error) {
store := gdbmdb.NewGdbmDb()
storeFile := path.Join(dbDir, "state.gdbm")
store.Connect(ctx, storeFile)
return store, nil
}
func getUserdataDb(dbDir string, ctx context.Context) db.Db {
store := gdbmdb.NewGdbmDb()
storeFile := path.Join(dbDir, "userdata.gdbm")
store.Connect(ctx, storeFile)
return store
}
func getResource(resourceDir string, ctx context.Context) (resource.Resource, error) {
store := fsdb.NewFsDb()
err := store.Connect(ctx, resourceDir)
if err != nil {
return nil, err
}
rfs := resource.NewDbResource(store)
return rfs, nil
}
func main() {
var dbDir string
var resourceDir string
var size uint
var engineDebug bool
var stateDebug bool
var host string
var port uint
flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
flag.BoolVar(&engineDebug, "engine-debug", false, "use engine debug output")
flag.BoolVar(&stateDebug, "state-debug", false, "use engine debug output")
flag.UintVar(&size, "s", 160, "max size of output")
flag.StringVar(&host, "h", "127.0.0.1", "http host")
flag.UintVar(&port, "p", 7123, "http port")
flag.Parse()
logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)
ctx := context.Background()
pfp := path.Join(scriptDir, "pp.csv")
flagParser, err := getFlags(pfp, true)
if err != nil {
os.Exit(1)
}
cfg := engine.Config{
Root: "root",
OutputSize: uint32(size),
FlagCount: uint32(16),
}
if stateDebug {
cfg.StateDebug = true
}
if engineDebug {
cfg.EngineDebug = true
}
rs, err := getResource(resourceDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
err = ensureDbDir(dbDir)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
userdataStore := getUserdataDb(dbDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
defer userdataStore.Close()
dbResource, ok := rs.(*resource.DbResource)
if !ok {
os.Exit(1)
}
hl, err := getHandler(flagParser, dbResource, userdataStore)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
stateStore, err := getStateStore(dbDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
defer stateStore.Close()
rp := &atRequestParser{}
bsh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
sh := httpserver.NewATSessionHandler(bsh)
s := &http.Server{
Addr: fmt.Sprintf("%s:%s", host, strconv.Itoa(int(port))),
Handler: sh,
}
s.RegisterOnShutdown(sh.Shutdown)
cint := make(chan os.Signal)
cterm := make(chan os.Signal)
signal.Notify(cint, os.Interrupt, syscall.SIGINT)
signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
go func() {
select {
case _ = <-cint:
case _ = <-cterm:
}
s.Shutdown(ctx)
}()
err = s.ListenAndServe()
if err != nil {
logg.Infof("Server closed with error", "err", err)
}
}

251
cmd/async/main.go Normal file
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@ -0,0 +1,251 @@
package main
import (
"context"
"flag"
"fmt"
"os"
"os/signal"
"path"
"syscall"
"git.defalsify.org/vise.git/asm"
"git.defalsify.org/vise.git/db"
fsdb "git.defalsify.org/vise.git/db/fs"
gdbmdb "git.defalsify.org/vise.git/db/gdbm"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/resource"
"git.defalsify.org/vise.git/logging"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
"git.grassecon.net/urdt/ussd/internal/handlers"
)
var (
logg = logging.NewVanilla()
scriptDir = path.Join("services", "registration")
)
type asyncRequestParser struct {
sessionId string
input []byte
}
func(p *asyncRequestParser) GetSessionId(r any) (string, error) {
return p.sessionId, nil
}
func(p *asyncRequestParser) GetInput(r any) ([]byte, error) {
return p.input, nil
}
func getFlags(fp string, debug bool) (*asm.FlagParser, error) {
flagParser := asm.NewFlagParser().WithDebug()
_, err := flagParser.Load(fp)
if err != nil {
return nil, err
}
return flagParser, nil
}
func getHandler(appFlags *asm.FlagParser, rs *resource.DbResource, userdataStore db.Db) (*ussd.Handlers, error) {
ussdHandlers, err := ussd.NewHandlers(appFlags, userdataStore)
if err != nil {
return nil, err
}
rs.AddLocalFunc("select_language", ussdHandlers.SetLanguage)
rs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
rs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
rs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
rs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
rs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
rs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
rs.AddLocalFunc("quit", ussdHandlers.Quit)
rs.AddLocalFunc("check_balance", ussdHandlers.CheckBalance)
rs.AddLocalFunc("validate_recipient", ussdHandlers.ValidateRecipient)
rs.AddLocalFunc("transaction_reset", ussdHandlers.TransactionReset)
rs.AddLocalFunc("max_amount", ussdHandlers.MaxAmount)
rs.AddLocalFunc("validate_amount", ussdHandlers.ValidateAmount)
rs.AddLocalFunc("reset_transaction_amount", ussdHandlers.ResetTransactionAmount)
rs.AddLocalFunc("get_recipient", ussdHandlers.GetRecipient)
rs.AddLocalFunc("get_sender", ussdHandlers.GetSender)
rs.AddLocalFunc("get_amount", ussdHandlers.GetAmount)
rs.AddLocalFunc("reset_incorrect", ussdHandlers.ResetIncorrectPin)
rs.AddLocalFunc("save_firstname", ussdHandlers.SaveFirstname)
rs.AddLocalFunc("save_familyname", ussdHandlers.SaveFamilyname)
rs.AddLocalFunc("save_gender", ussdHandlers.SaveGender)
rs.AddLocalFunc("save_location", ussdHandlers.SaveLocation)
rs.AddLocalFunc("save_yob", ussdHandlers.SaveYob)
rs.AddLocalFunc("save_offerings", ussdHandlers.SaveOfferings)
rs.AddLocalFunc("quit_with_balance", ussdHandlers.QuitWithBalance)
rs.AddLocalFunc("reset_account_authorized", ussdHandlers.ResetAccountAuthorized)
rs.AddLocalFunc("reset_allow_update", ussdHandlers.ResetAllowUpdate)
rs.AddLocalFunc("get_profile_info", ussdHandlers.GetProfileInfo)
rs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
rs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
rs.AddLocalFunc("set_reset_single_edit", ussdHandlers.SetResetSingleEdit)
rs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
return ussdHandlers, nil
}
func ensureDbDir(dbDir string) error {
err := os.MkdirAll(dbDir, 0700)
if err != nil {
return fmt.Errorf("state dir create exited with error: %v\n", err)
}
return nil
}
func getStateStore(dbDir string, ctx context.Context) (db.Db, error) {
store := gdbmdb.NewGdbmDb()
storeFile := path.Join(dbDir, "state.gdbm")
store.Connect(ctx, storeFile)
return store, nil
}
func getUserdataDb(dbDir string, ctx context.Context) db.Db {
store := gdbmdb.NewGdbmDb()
storeFile := path.Join(dbDir, "userdata.gdbm")
store.Connect(ctx, storeFile)
return store
}
func getResource(resourceDir string, ctx context.Context) (resource.Resource, error) {
store := fsdb.NewFsDb()
err := store.Connect(ctx, resourceDir)
if err != nil {
return nil, err
}
rfs := resource.NewDbResource(store)
return rfs, nil
}
func main() {
var sessionId string
var dbDir string
var resourceDir string
var size uint
var engineDebug bool
var stateDebug bool
var host string
var port uint
flag.StringVar(&sessionId, "session-id", "075xx2123", "session id")
flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
flag.BoolVar(&engineDebug, "engine-debug", false, "use engine debug output")
flag.BoolVar(&stateDebug, "state-debug", false, "use engine debug output")
flag.UintVar(&size, "s", 160, "max size of output")
flag.StringVar(&host, "h", "127.0.0.1", "http host")
flag.UintVar(&port, "p", 7123, "http port")
flag.Parse()
logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size, "sessionId", sessionId)
ctx := context.Background()
pfp := path.Join(scriptDir, "pp.csv")
flagParser, err := getFlags(pfp, true)
if err != nil {
os.Exit(1)
}
cfg := engine.Config{
Root: "root",
OutputSize: uint32(size),
FlagCount: uint32(16),
}
if stateDebug {
cfg.StateDebug = true
}
if engineDebug {
cfg.EngineDebug = true
}
rs, err := getResource(resourceDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
err = ensureDbDir(dbDir)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
userdataStore := getUserdataDb(dbDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
defer userdataStore.Close()
dbResource, ok := rs.(*resource.DbResource)
if !ok {
os.Exit(1)
}
hl, err := getHandler(flagParser, dbResource, userdataStore)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
stateStore, err := getStateStore(dbDir, ctx)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
defer stateStore.Close()
rp := &asyncRequestParser{
sessionId: sessionId,
}
sh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
cfg.SessionId = sessionId
rqs := handlers.RequestSession{
Ctx: ctx,
Writer: os.Stdout,
Config: cfg,
}
cint := make(chan os.Signal)
cterm := make(chan os.Signal)
signal.Notify(cint, os.Interrupt, syscall.SIGINT)
signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
go func() {
select {
case _ = <-cint:
case _ = <-cterm:
}
sh.Shutdown()
}()
for true {
rqs, err = sh.Process(rqs)
if err != nil {
fmt.Errorf("error in process: %v", err)
os.Exit(1)
}
rqs, err = sh.Output(rqs)
if err != nil {
fmt.Errorf("error in output: %v", err)
os.Exit(1)
}
rqs, err = sh.Reset(rqs)
if err != nil {
fmt.Errorf("error in reset: %v", err)
os.Exit(1)
}
fmt.Println("")
_, err = fmt.Scanln(&rqs.Input)
if err != nil {
fmt.Errorf("error in input: %v", err)
os.Exit(1)
}
}
}

6
cmd/http/main.go
View File

@ -20,6 +20,7 @@ import (
"git.defalsify.org/vise.git/logging"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
"git.grassecon.net/urdt/ussd/internal/handlers"
httpserver "git.grassecon.net/urdt/ussd/internal/http"
)
@ -112,6 +113,7 @@ func getResource(resourceDir string, ctx context.Context) (resource.Resource, er
return rfs, nil
}
func main() {
var dbDir string
var resourceDir string
@ -189,8 +191,8 @@ func main() {
defer stateStore.Close()
rp := &httpserver.DefaultRequestParser{}
//sh := httpserver.NewSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl.Init)
sh := httpserver.NewSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
bsh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
sh := httpserver.ToSessionHandler(bsh)
s := &http.Server{
Addr: fmt.Sprintf("%s:%s", host, strconv.Itoa(int(port))),
Handler: sh,

2
go.mod
View File

@ -3,7 +3,7 @@ module git.grassecon.net/urdt/ussd
go 1.22.6
require (
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911162138-1f2af8672dc7
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911231817-0d23e0dbb57f
github.com/alecthomas/assert/v2 v2.2.2
gopkg.in/leonelquinteros/gotext.v1 v1.3.1
)

4
go.sum
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@ -1,5 +1,5 @@
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911162138-1f2af8672dc7 h1:embPZDx0Sgpq6jp9vcZ1GVI0eum3PsPCmAfxAa/1KLI=
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911162138-1f2af8672dc7/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911231817-0d23e0dbb57f h1:CuJvG3NyMoRtHUim4aZdrfjjJBg2AId7z0yp7Q97bRM=
git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911231817-0d23e0dbb57f/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
github.com/alecthomas/assert/v2 v2.2.2 h1:Z/iVC0xZfWTaFNE6bA3z07T86hd45Xe2eLt6WVy2bbk=
github.com/alecthomas/assert/v2 v2.2.2/go.mod h1:pXcQ2Asjp247dahGEmsZ6ru0UVwnkhktn7S0bBDLxvQ=
github.com/alecthomas/participle/v2 v2.0.0 h1:Fgrq+MbuSsJwIkw3fEj9h75vDP0Er5JzepJ0/HNHv0g=

117
internal/handlers/base.go Normal file
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@ -0,0 +1,117 @@
package handlers
import (
"git.defalsify.org/vise.git/db"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/resource"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
"git.grassecon.net/urdt/ussd/internal/storage"
)
type BaseSessionHandler struct {
cfgTemplate engine.Config
rp RequestParser
rs resource.Resource
hn *ussd.Handlers
provider storage.StorageProvider
}
func NewBaseSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, hn *ussd.Handlers) *BaseSessionHandler {
return &BaseSessionHandler{
cfgTemplate: cfg,
rs: rs,
hn: hn,
rp: rp,
provider: storage.NewSimpleStorageProvider(stateDb, userdataDb),
}
}
func(f* BaseSessionHandler) Shutdown() {
err := f.provider.Close()
if err != nil {
logg.Errorf("handler shutdown error", "err", err)
}
}
func(f *BaseSessionHandler) GetEngine(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine {
en := engine.NewEngine(cfg, rs)
en = en.WithPersister(pr)
return en
}
func(f *BaseSessionHandler) Process(rqs RequestSession) (RequestSession, error) {
var r bool
var err error
var ok bool
logg.InfoCtxf(rqs.Ctx, "new request", rqs)
rqs.Storage, err = f.provider.Get(rqs.Config.SessionId)
if err != nil {
logg.ErrorCtxf(rqs.Ctx, "", "storage get error", err)
return rqs, ErrStorage
}
f.hn = f.hn.WithPersister(rqs.Storage.Persister)
eni := f.GetEngine(rqs.Config, f.rs, rqs.Storage.Persister)
en, ok := eni.(*engine.DefaultEngine)
if !ok {
perr := f.provider.Put(rqs.Config.SessionId, rqs.Storage)
rqs.Storage = nil
if perr != nil {
logg.ErrorCtxf(rqs.Ctx, "", "storage put error", perr)
}
return rqs, ErrEngineType
}
en = en.WithFirst(f.hn.Init)
if rqs.Config.EngineDebug {
en = en.WithDebug(nil)
}
rqs.Engine = en
r, err = rqs.Engine.Init(rqs.Ctx)
if err != nil {
perr := f.provider.Put(rqs.Config.SessionId, rqs.Storage)
rqs.Storage = nil
if perr != nil {
logg.ErrorCtxf(rqs.Ctx, "", "storage put error", perr)
}
return rqs, err
}
if r && len(rqs.Input) > 0 {
r, err = rqs.Engine.Exec(rqs.Ctx, rqs.Input)
}
if err != nil {
perr := f.provider.Put(rqs.Config.SessionId, rqs.Storage)
rqs.Storage = nil
if perr != nil {
logg.ErrorCtxf(rqs.Ctx, "", "storage put error", perr)
}
return rqs, err
}
rqs.Continue = r
return rqs, nil
}
func(f *BaseSessionHandler) Output(rqs RequestSession) (RequestSession, error) {
var err error
_, err = rqs.Engine.WriteResult(rqs.Ctx, rqs.Writer)
return rqs, err
}
func(f *BaseSessionHandler) Reset(rqs RequestSession) (RequestSession, error) {
defer f.provider.Put(rqs.Config.SessionId, rqs.Storage)
return rqs, rqs.Engine.Finish()
}
func(f *BaseSessionHandler) GetConfig() engine.Config {
return f.cfgTemplate
}
func(f *BaseSessionHandler) GetRequestParser() RequestParser {
return f.rp
}

56
internal/handlers/single.go Normal file
View File

@ -0,0 +1,56 @@
package handlers
import (
"context"
"errors"
"io"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/resource"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/logging"
"git.grassecon.net/urdt/ussd/internal/storage"
)
var (
logg = logging.NewVanilla().WithDomain("handlers")
)
var (
ErrInvalidRequest = errors.New("invalid request for context")
ErrSessionMissing = errors.New("missing session")
ErrInvalidInput = errors.New("invalid input")
ErrStorage = errors.New("storage retrieval fail")
ErrEngineType = errors.New("incompatible engine")
ErrEngineInit = errors.New("engine init fail")
ErrEngineExec = errors.New("engine exec fail")
)
type RequestSession struct {
Ctx context.Context
Config engine.Config
Engine engine.Engine
Input []byte
Storage *storage.Storage
Writer io.Writer
Continue bool
}
type engineMaker func(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine
// TODO: seems like can remove this.
type RequestParser interface {
GetSessionId(rq any) (string, error)
GetInput(rq any) ([]byte, error)
}
type RequestHandler interface {
GetConfig() engine.Config
GetRequestParser() RequestParser
GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine
Process(rs RequestSession) (RequestSession, error)
Output(rs RequestSession) (RequestSession, error)
Reset(rs RequestSession) (RequestSession, error)
Shutdown()
}

93
internal/http/at_session_handler.go Normal file
View File

@ -0,0 +1,93 @@
package http
import (
"io"
"net/http"
"git.grassecon.net/urdt/ussd/internal/handlers"
)
type ATSessionHandler struct {
*SessionHandler
}
func NewATSessionHandler(h handlers.RequestHandler) *ATSessionHandler {
return &ATSessionHandler{
SessionHandler: ToSessionHandler(h),
}
}
func (ash *ATSessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
var code int
var err error
rqs := handlers.RequestSession{
Ctx: req.Context(),
Writer: w,
}
rp := ash.GetRequestParser()
cfg := ash.GetConfig()
cfg.SessionId, err = rp.GetSessionId(req)
if err != nil {
logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
ash.writeError(w, 400, err)
}
rqs.Config = cfg
rqs.Input, err = rp.GetInput(req)
if err != nil {
logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
ash.writeError(w, 400, err)
return
}
rqs, err = ash.Process(rqs)
switch err {
case handlers.ErrStorage:
code = 500
case handlers.ErrEngineInit:
code = 500
case handlers.ErrEngineExec:
code = 500
default:
code = 200
}
if code != 200 {
ash.writeError(w, 500, err)
return
}
w.WriteHeader(200)
w.Header().Set("Content-Type", "text/plain")
rqs, err = ash.Output(rqs)
if err != nil {
ash.writeError(w, 500, err)
return
}
rqs, err = ash.Reset(rqs)
if err != nil {
ash.writeError(w, 500, err)
return
}
}
func (ash *ATSessionHandler) Output(rqs handlers.RequestSession) (handlers.RequestSession, error) {
var err error
var prefix string
if rqs.Continue {
prefix = "CON "
} else {
prefix = "END "
}
_, err = io.WriteString(rqs.Writer, prefix)
if err != nil {
return rqs, err
}
_, err = rqs.Engine.WriteResult(rqs.Ctx, rqs.Writer)
return rqs, err
}

148
internal/http/server.go
View File

@ -1,42 +1,42 @@
package http
import (
"fmt"
"io/ioutil"
"net/http"
"strconv"
"git.defalsify.org/vise.git/db"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/logging"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/resource"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
"git.grassecon.net/urdt/ussd/internal/handlers"
)
var (
logg = logging.NewVanilla().WithDomain("httpserver")
)
type RequestParser interface {
GetSessionId(rq *http.Request) (string, error)
GetInput(rq *http.Request) ([]byte, error)
}
type DefaultRequestParser struct {
}
func(rp *DefaultRequestParser) GetSessionId(rq *http.Request) (string, error) {
v := rq.Header.Get("X-Vise-Session")
func(rp *DefaultRequestParser) GetSessionId(rq any) (string, error) {
rqv, ok := rq.(*http.Request)
if !ok {
return "", handlers.ErrInvalidRequest
}
v := rqv.Header.Get("X-Vise-Session")
if v == "" {
return "", fmt.Errorf("no session found")
return "", handlers.ErrSessionMissing
}
return v, nil
}
func(rp *DefaultRequestParser) GetInput(rq *http.Request) ([]byte, error) {
defer rq.Body.Close()
v, err := ioutil.ReadAll(rq.Body)
func(rp *DefaultRequestParser) GetInput(rq any) ([]byte, error) {
rqv, ok := rq.(*http.Request)
if !ok {
return nil, handlers.ErrInvalidRequest
}
defer rqv.Body.Close()
v, err := ioutil.ReadAll(rqv.Body)
if err != nil {
return nil, err
}
@ -44,107 +44,79 @@ func(rp *DefaultRequestParser) GetInput(rq *http.Request) ([]byte, error) {
}
type SessionHandler struct {
cfgTemplate engine.Config
rp RequestParser
rs resource.Resource
//first resource.EntryFunc
hn *ussd.Handlers
provider StorageProvider
handlers.RequestHandler
}
//func NewSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, first resource.EntryFunc) *SessionHandler {
func NewSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, hn *ussd.Handlers) *SessionHandler {
func ToSessionHandler(h handlers.RequestHandler) *SessionHandler {
return &SessionHandler{
cfgTemplate: cfg,
rs: rs,
//first: first,
hn: hn,
rp: rp,
provider: NewSimpleStorageProvider(stateDb, userdataDb),
RequestHandler: h,
}
}
func(f *SessionHandler) writeError(w http.ResponseWriter, code int, msg string, err error) {
w.Header().Set("X-Vise", msg + ": " + err.Error())
w.Header().Set("Content-Length", "0")
func(f *SessionHandler) writeError(w http.ResponseWriter, code int, err error) {
s := err.Error()
w.Header().Set("Content-Length", strconv.Itoa(len(s)))
w.WriteHeader(code)
_, err = w.Write([]byte{})
if err != nil {
logg.Errorf("error writing error!!", "err", err, "olderr", s)
w.WriteHeader(500)
w.Header().Set("X-Vise", err.Error())
}
return
}
func(f* SessionHandler) Shutdown() {
err := f.provider.Close()
if err != nil {
logg.Errorf("handler shutdown error", "err", err)
}
}
func(f *SessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
var r bool
sessionId, err := f.rp.GetSessionId(req)
if err != nil {
f.writeError(w, 400, "Session missing", err)
return
}
input, err := f.rp.GetInput(req)
if err != nil {
f.writeError(w, 400, "Input read fail", err)
return
}
ctx := req.Context()
cfg := f.cfgTemplate
cfg.SessionId = sessionId
var code int
var err error
var perr error
logg.InfoCtxf(ctx, "new request", "session", cfg.SessionId, "input", input)
storage, err := f.provider.Get(cfg.SessionId)
if err != nil {
f.writeError(w, 500, "Storage retrieval fail", err)
return
}
f.hn = f.hn.WithPersister(storage.Persister)
defer f.provider.Put(cfg.SessionId, storage)
en := getEngine(cfg, f.rs, storage.Persister)
en = en.WithFirst(f.hn.Init)
if cfg.EngineDebug {
en = en.WithDebug(nil)
rqs := handlers.RequestSession{
Ctx: req.Context(),
Writer: w,
}
r, err = en.Init(ctx)
rp := f.GetRequestParser()
cfg := f.GetConfig()
cfg.SessionId, err = rp.GetSessionId(req)
if err != nil {
f.writeError(w, 500, "Engine init fail", err)
logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
f.writeError(w, 400, err)
}
rqs.Config = cfg
rqs.Input, err = rp.GetInput(req)
if err != nil {
logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
f.writeError(w, 400, err)
return
}
if r && len(input) > 0 {
r, err = en.Exec(ctx, input)
rqs, err = f.Process(rqs)
switch err {
case handlers.ErrStorage:
code = 500
case handlers.ErrEngineInit:
code = 500
case handlers.ErrEngineExec:
code = 500
default:
code = 200
}
if err != nil {
f.writeError(w, 500, "Engine exec fail", err)
if code != 200 {
f.writeError(w, 500, err)
return
}
w.WriteHeader(200)
w.Header().Set("Content-Type", "text/plain")
_, err = en.WriteResult(ctx, w)
rqs, err = f.Output(rqs)
rqs, perr = f.Reset(rqs)
if err != nil {
f.writeError(w, 500, "Write result fail", err)
f.writeError(w, 500, err)
return
}
err = en.Finish()
if err != nil {
f.writeError(w, 500, "Engine finish fail", err)
if perr != nil {
f.writeError(w, 500, perr)
return
}
_ = r
}
func getEngine(cfg engine.Config, rs resource.Resource, pr *persist.Persister) *engine.DefaultEngine {
en := engine.NewEngine(cfg, rs)
en = en.WithPersister(pr)
return en
}

14
internal/http/storage.go → internal/storage/storage.go
View File

@ -1,4 +1,4 @@
package http
package storage
import (
"git.defalsify.org/vise.git/db"
@ -11,31 +11,31 @@ type Storage struct {
}
type StorageProvider interface {
Get(sessionId string) (Storage, error)
Put(sessionId string, storage Storage) error
Get(sessionId string) (*Storage, error)
Put(sessionId string, storage *Storage) error
Close() error
}
type SimpleStorageProvider struct {
Storage
*Storage
}
func NewSimpleStorageProvider(stateStore db.Db, userdataStore db.Db) StorageProvider {
pe := persist.NewPersister(stateStore)
pe = pe.WithFlush()
return &SimpleStorageProvider{
Storage: Storage{
Storage: &Storage{
Persister: pe,
UserdataDb: userdataStore,
},
}
}
func (p *SimpleStorageProvider) Get(sessionId string) (Storage, error) {
func (p *SimpleStorageProvider) Get(sessionId string) (*Storage, error) {
return p.Storage, nil
}
func (p *SimpleStorageProvider) Put(sessionId string, storage Storage) error {
func (p *SimpleStorageProvider) Put(sessionId string, storage *Storage) error {
return nil
}