Merge pull request 'africas-talking' (#50) from africas-talking into lash/async-driver

Reviewed-on: #50
Reviewed-by: lash <accounts-grassrootseconomics@holbrook.no>
This commit is contained in:
lash 2024-09-14 16:28:05 +02:00
commit f4f475bd45
4 changed files with 356 additions and 5 deletions

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)
}
}

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@ -1,13 +1,13 @@
package handlers package handlers
import ( import (
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/resource"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/db" "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/storage"
"git.grassecon.net/urdt/ussd/internal/handlers/ussd" "git.grassecon.net/urdt/ussd/internal/handlers/ussd"
"git.grassecon.net/urdt/ussd/internal/storage"
) )
type BaseSessionHandler struct { type BaseSessionHandler struct {
@ -93,7 +93,7 @@ func(f *BaseSessionHandler) Process(rqs RequestSession) (RequestSession, error)
return rqs, err return rqs, err
} }
_ = r rqs.Continue = r
return rqs, nil return rqs, nil
} }

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@ -34,6 +34,7 @@ type RequestSession struct {
Input []byte Input []byte
Storage *storage.Storage Storage *storage.Storage
Writer io.Writer Writer io.Writer
Continue bool
} }
type engineMaker func(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine type engineMaker func(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine

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@ -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
}