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ingredient/info: Add Fetcher concept

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This commit is contained in:
Tom Wiesing 2022-10-19 10:50:40 +02:00
parent a6501b42c7
commit 52559e4d68
No known key found for this signature in database
22 changed files with 447 additions and 328 deletions
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2
cmd/info.go
View file

@ -34,7 +34,7 @@ func (i info) Run(context wisski_distillery.Context) error {
return err
}
info, err := instance.Info().Fetch(false)
info, err := instance.Info().Information(false)
if err != nil {
return err
}

2
cmd/update_prefix_config.go
View file

@ -44,7 +44,7 @@ func (upc updateprefixconfig) Run(context wisski_distillery.Context) error {
return status.StreamGroup(context.IOStream, upc.Parallel, func(instance *wisski.WissKI, io stream.IOStream) error {
io.Println("reading prefixes")
err := instance.Prefixes().UpdatePrefixes()
err := instance.Prefixes().Update()
if err != nil {
return errPrefixUpdateFailed.Wrap(err)
}

2
internal/dis/component/home/public.go
View file

@ -73,7 +73,7 @@ func (home *Home) homeRender() ([]byte, error) {
i := i
wissKI := instance
eg.Go(func() (err error) {
context.Instances[i], err = wissKI.Info().Fetch(true)
context.Instances[i], err = wissKI.Info().Information(true)
return
})
}

2
internal/dis/component/info/index.go
View file

@ -50,7 +50,7 @@ func (nfo *Info) indexPageAPI(r *http.Request) (idx indexPageContext, err error)
// store the info for this group!
group.Go(func() (err error) {
idx.Instances[i], err = instance.Info().Fetch(true)
idx.Instances[i], err = instance.Info().Information(true)
return err
})
}

2
internal/dis/component/info/instance.go
View file

@ -40,7 +40,7 @@ func (info *Info) instancePageAPI(r *http.Request) (is instancePageContext, err
is.Instance = instance.Instance
// get some more info about the wisski
is.Info, err = instance.Info().Fetch(false)
is.Info, err = instance.Info().Information(false)
if err != nil {
return is, err
}

2
internal/dis/component/resolver/prefixes.go
View file

@ -37,7 +37,7 @@ func (resolver *Resolver) AllPrefixes() (map[string]string, error) {
// failed to fetch prefixes for this particular instance
// => skip it!
prefixes, err := instance.Prefixes().PrefixesCached()
prefixes, err := instance.Prefixes().AllCached()
if err != nil {
lastErr = err
continue

12
internal/wisski/ingredient/barrel/build.go
View file

@ -5,6 +5,7 @@ import (
"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
"github.com/FAU-CDI/wisski-distillery/internal/dis/component/meta"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/locker"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/mstore"
"github.com/tkw1536/goprogram/stream"
@ -61,3 +62,14 @@ func (barrel Barrel) LastRebuild() (t time.Time, err error) {
func (barrel *Barrel) setLastRebuild() error {
return lastRebuild.Set(barrel.MStore, time.Now().Unix())
}
type LastRebuildFetcher struct {
ingredient.Base
Barrel *Barrel
}
func (lbr *LastRebuildFetcher) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
info.LastRebuild, _ = lbr.Barrel.LastRebuild()
return
}

16
internal/wisski/ingredient/barrel/drush/cron.go
View file

@ -3,6 +3,7 @@ package drush
import (
"time"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/php"
"github.com/tkw1536/goprogram/exit"
"github.com/tkw1536/goprogram/stream"
@ -35,3 +36,18 @@ func (drush *Drush) LastCron(server *php.Server) (t time.Time, err error) {
}
return time.Unix(timestamp, 0), nil
}
type LastCronFetcher struct {
ingredient.Base
Drush *Drush
}
func (lbr *LastCronFetcher) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
if flags.Quick {
return
}
info.LastRebuild, _ = lbr.Drush.LastCron(flags.Server)
return
}

12
internal/wisski/ingredient/barrel/drush/update.go
View file

@ -4,6 +4,7 @@ import (
"time"
"github.com/FAU-CDI/wisski-distillery/internal/dis/component/meta"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/mstore"
"github.com/FAU-CDI/wisski-distillery/pkg/environment"
"github.com/tkw1536/goprogram/exit"
@ -46,3 +47,14 @@ func (drush *Drush) LastUpdate() (t time.Time, err error) {
func (drush *Drush) setLastUpdate() error {
return lastUpdate.Set(drush.MStore, time.Now().Unix())
}
type LastUpdateFetcher struct {
ingredient.Base
Drush *Drush
}
func (lbr *LastUpdateFetcher) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
info.LastUpdate, err = lbr.Drush.LastUpdate()
return
}

16
internal/wisski/ingredient/barrel/running.go
View file

@ -1,6 +1,9 @@
package barrel
import "github.com/tkw1536/goprogram/stream"
import (
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
"github.com/tkw1536/goprogram/stream"
)
// Running checks if this WissKI is currently running.
func (barrel *Barrel) Running() (bool, error) {
@ -10,3 +13,14 @@ func (barrel *Barrel) Running() (bool, error) {
}
return len(ps) > 0, nil
}
type RunningFetcher struct {
ingredient.Base
Barrel *Barrel
}
func (rf *RunningFetcher) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
info.Running, err = rf.Barrel.Running()
return
}

48
internal/wisski/ingredient/fetcher.go Normal file
View file

@ -0,0 +1,48 @@
package ingredient
import (
"time"
"github.com/FAU-CDI/wisski-distillery/internal/models"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/php/phpserver"
)
// Fetcher is an ingredient with a fetch method
type Fetcher interface {
Ingredient
// Fetch fetchs information with the given information and writes it into info.
// Distinct Fetchers must write into distinct fields.
Fetch(flags FetchFlags, info *Information) error
}
// FetchFlags specifies what information to fetch
type FetchFlags struct {
Quick bool
Server *phpserver.Server
}
// Information represents fetched information about a WissKI
type Information struct {
Time time.Time // Time this info was built
// Generic Information
Slug string // slug
URL string // complete URL, including http(s)
Locked bool // Is this instance currently locked?
// Information about the running instance
Running bool
LastRebuild time.Time
LastUpdate time.Time
LastCron time.Time
// List of backups made
Snapshots []models.Export
// WissKI content information
NoPrefixes bool // TODO: Move this into the database
Prefixes []string // list of prefixes
Pathbuilders map[string]string // all the pathbuilders
}

102
internal/wisski/ingredient/info/info.go
View file

@ -3,7 +3,6 @@ package info
import (
"time"
"github.com/FAU-CDI/wisski-distillery/internal/models"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/barrel"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/barrel/drush"
@ -17,6 +16,8 @@ type Info struct {
ingredient.Base
PHP *php.PHP
Fetchers []ingredient.Fetcher
Barrel *barrel.Barrel
Locker *locker.Locker
Drush *drush.Drush
@ -24,98 +25,41 @@ type Info struct {
Pathbuilder *extras.Pathbuilder
}
// WissKIInfo represents information about this WissKI Instance.
type WissKIInfo struct {
Time time.Time // Time this info was built
// TODO: Use the information struct globally
type WissKIInfo = ingredient.Information
// Generic Information
Slug string // slug
URL string // complete URL, including http(s)
Locked bool // Is this instance currently locked?
// Information about the running instance
Running bool
LastRebuild time.Time
LastUpdate time.Time
LastCron time.Time
// List of backups made
Snapshots []models.Export
// WissKI content information
NoPrefixes bool // TODO: Move this into the database
Prefixes []string // list of prefixes
Pathbuilders map[string]string // all the pathbuilders
// Information fetches information about this WissKI.
// TODO: Rework this to be able to determine what kind of information is available.
func (wisski *Info) Information(quick bool) (info WissKIInfo, err error) {
// setup flags
flags := ingredient.FetchFlags{
Quick: quick,
}
// Fetch fetches information about this WissKI.
// TODO: Rework this to be able to determine what kind of information is available.
func (wisski *Info) Fetch(quick bool) (info WissKIInfo, err error) {
var group errgroup.Group
wisski.infoQuick(&info, &group)
if !quick {
// potentially setup a new server
if !flags.Quick {
server, err := wisski.PHP.NewServer()
if err == nil {
defer server.Close()
}
wisski.infoSlow(&info, server, &group)
}
// run all the fetchers!
var group errgroup.Group
for _, fetcher := range wisski.Fetchers {
fetcher := fetcher
group.Go(func() error {
return fetcher.Fetch(flags, &info)
})
}
err = group.Wait()
return
}
func (wisski *Info) infoQuick(info *WissKIInfo, group *errgroup.Group) {
func (wisski *Info) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) error {
info.Time = time.Now().UTC()
info.Slug = wisski.Slug
info.URL = wisski.URL().String()
group.Go(func() (err error) {
info.Running, err = wisski.Barrel.Running()
return
})
group.Go(func() (err error) {
info.Locked = wisski.Locker.Locked()
return
})
group.Go(func() (err error) {
info.LastRebuild, _ = wisski.Barrel.LastRebuild()
return
})
group.Go(func() (err error) {
info.LastUpdate, _ = wisski.Drush.LastUpdate()
return
})
group.Go(func() (err error) {
info.NoPrefixes = wisski.Prefixes.NoPrefix()
return
})
}
func (wisski *Info) infoSlow(info *WissKIInfo, server *php.Server, group *errgroup.Group) {
group.Go(func() (err error) {
info.Prefixes, _ = wisski.Prefixes.All(server)
return nil
})
group.Go(func() (err error) {
info.Snapshots, _ = wisski.Snapshots()
return nil
})
group.Go(func() (err error) {
info.Pathbuilders, _ = wisski.Pathbuilder.GetAll(server)
return nil
})
group.Go(func() (err error) {
info.LastCron, _ = wisski.Drush.LastCron(server)
return
})
return nil
}

18
internal/wisski/ingredient/info/snapshots.go Normal file
View file

@ -0,0 +1,18 @@
package info
import "github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
type SnapshotsFetcher struct {
ingredient.Base
Info *Info
}
func (lbr *SnapshotsFetcher) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
if flags.Quick {
return
}
info.Snapshots, _ = lbr.Snapshots()
return
}

10
internal/wisski/ingredient/locker/locked.go
View file

@ -1,6 +1,9 @@
package locker
import "github.com/FAU-CDI/wisski-distillery/internal/models"
import (
"github.com/FAU-CDI/wisski-distillery/internal/models"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
)
// Locked checks if this WissKI is currently locked.
func (lock *Locker) Locked() (locked bool) {
@ -13,3 +16,8 @@ func (lock *Locker) Locked() (locked bool) {
table.Select("count(*) > 0").Where("slug = ?", lock.Slug).Find(&locked)
return
}
func (locker *Locker) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
info.Locked = locker.Locked()
return
}

9
internal/wisski/ingredient/php/extras/pathbuilder.go
View file

@ -42,3 +42,12 @@ func (pathbuilder *Pathbuilder) GetAll(server *php.Server) (pathbuilders map[str
err = pathbuilder.PHP.ExecScript(server, &pathbuilders, pathbuilderPHP, "all_xml")
return
}
func (pathbuilder *Pathbuilder) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
if flags.Quick {
return
}
info.Pathbuilders, _ = pathbuilder.GetAll(flags.Server)
return
}

19
internal/wisski/ingredient/php/extras/prefixes.go
View file

@ -141,15 +141,28 @@ func (wisski *Prefixes) filePrefixes() (prefixes []string, err error) {
var prefix = mstore.For[string]("prefix")
// Prefixes returns the cached prefixes from the given instance
func (wisski *Prefixes) PrefixesCached() (results []string, err error) {
func (wisski *Prefixes) AllCached() (results []string, err error) {
return prefix.GetAll(wisski.MStore)
}
// UpdatePrefixes updates the cached prefixes of this instance
func (wisski *Prefixes) UpdatePrefixes() error {
// Update updates the cached prefixes of this instance
func (wisski *Prefixes) Update() error {
prefixes, err := wisski.All(nil)
if err != nil {
return err
}
return prefix.SetAll(wisski.MStore, prefixes...)
}
func (prefixes *Prefixes) Fetch(flags ingredient.FetchFlags, info *ingredient.Information) (err error) {
info.NoPrefixes = prefixes.NoPrefix()
if flags.Quick {
// quick mode: grab only the cached prefixes
info.Prefixes, _ = prefixes.AllCached()
} else {
// slow mode: grab the fresh prefixes from the server
// TODO: Do we want to update them while we are at it?
info.Prefixes, _ = prefixes.All(flags.Server)
}
return
}

36
internal/wisski/ingredient/php/phpserver/errors.go Normal file
View file

@ -0,0 +1,36 @@
package phpserver
import "fmt"
// Common PHP Errors
var (
errPHPInit = "Unable to initialize"
errPHPMarshal = "Marshal failed"
errPHPInvalid = ServerError{Message: "Invalid code to execute"}
errPHPReceive = "Failed to receive response"
errPHPClosed = ServerError{Message: "Server closed"}
)
// PHPError represents an error during PHPServer logic
type ServerError struct {
Message string
Err error
}
func (err ServerError) Unwrap() error {
return err.Err
}
func (err ServerError) Error() string {
if err.Err == nil {
return fmt.Sprintf("PHPServer: %s", err.Message)
}
return fmt.Sprintf("PHPServer: %s: %s", err.Message, err.Err)
}
// Throwable represents an error during php code
type Throwable string
func (throwable Throwable) Error() string {
return string(throwable)
}

2
internal/wisski/ingredient/php/marshal.go → internal/wisski/ingredient/php/phpserver/marshal.go
View file

@ -1,4 +1,4 @@
package php
package phpserver
import (
"encoding/json"

216
internal/wisski/ingredient/php/phpserver/server.go Normal file
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@ -0,0 +1,216 @@
package phpserver
import (
"context"
"encoding/json"
"io"
"os"
"strings"
"sync"
_ "embed"
"github.com/tkw1536/goprogram/lib/collection"
"github.com/tkw1536/goprogram/lib/nobufio"
"github.com/tkw1536/goprogram/stream"
)
// New creates a new server, with execPHP as a method to call a PHP Shell.
func New(execPHP func(str stream.IOStream, script string)) (*Server, error) {
// create input and output pipes
ir, iw, err := os.Pipe()
if err != nil {
return nil, ServerError{errPHPInit, err}
}
or, ow, err := os.Pipe()
if err != nil {
ir.Close()
iw.Close()
return nil, ServerError{errPHPInit, err}
}
// create a context to close the server
context, cancel := context.WithCancel(context.Background())
// start the shell process, which will close everything once done
go func() {
defer func() {
ir.Close()
iw.Close()
or.Close()
ow.Close()
cancel()
}()
// start the server
io := stream.NewIOStream(ow, nil, ir, 0)
execPHP(io, serverPHP)
}()
// return a new server
return &Server{
in: iw,
out: or,
c: context,
}, nil
}
// Server represents a server that executes code within a distillery.
// A typical use-case is to define functions using [MarshalEval], and then call those functions [MarshalCall].
//
// A nil Server will return [ErrServerBroken] on every function call.
type Server struct {
m sync.Mutex
in io.WriteCloser
out io.Reader
c context.Context
}
// MarshalEval evaluates code on the server and Marshals the result into value.
// When value is nil, the results are discarded.
//
// code is directly passed to php's "eval" function.
// as such any functions defined will remain in server memory.
//
// When an exception is thrown by the PHP Code, error is not nil, and dest remains unchanged.
func (server *Server) MarshalEval(value any, code string) error {
server.m.Lock()
defer server.m.Unlock()
// quick hack: when the server is already done
if err := server.c.Err(); err != nil {
return errPHPClosed
}
// find a delimiter for the code, and then send
delim := findDelimiter(code)
io.WriteString(server.in, delim+"\n"+code+"\n"+delim+"\n")
// read the next line (as a response)
data, err := nobufio.ReadLine(server.out)
if err != nil {
return ServerError{Message: errPHPReceive, Err: err}
}
// read whatever we received
var received [2]json.RawMessage
if err := json.Unmarshal([]byte(data), &received); err != nil {
return ServerError{Message: errPHPMarshal, Err: err}
}
// check if there was an error
var errString string
if err := json.Unmarshal(received[1], &errString); err == nil && errString != "" {
return Throwable(errString)
}
// special case: no return value => no unmarshaling needed
if value == nil {
return nil
}
// read the actual result!
return json.Unmarshal(received[0], value)
}
// Eval is like [MarshalEval], but returns the value as an any
func (server *Server) Eval(code string) (value any, err error) {
err = server.MarshalEval(&value, code)
return
}
// MarshalCall calls a previously defined function with the given arguments.
// Arguments are sent to php using json Marshal, and are 'json_decode'd on the php side.
//
// Return values are received as in [MarshalEval].
func (server *Server) MarshalCall(value any, function string, args ...any) error {
// name of function to call
name := MarshalString(function)
// generate code to call
var code string
switch len(args) {
case 0:
code = "return call_user_func(" + name + ");"
case 1:
param, err := Marshal(args[0])
if err != nil {
return err
}
code = "return call_user_func(" + name + "," + param + ");"
default:
params, err := Marshal(args)
if err != nil {
return err
}
code = "return call_user_func_array(" + name + "," + params + ");"
}
// and evaluate the code
return server.MarshalEval(value, code)
}
// Call is like [MarshalCall] but returns the return value of the function as an any
func (server *Server) Call(function string, args ...any) (value any, err error) {
err = server.MarshalCall(&value, function, args...)
return
}
const delimiterRune = 'F' // press to pay respect
// findDelimiter finds a delimiter that does not occur in the input string
func findDelimiter(input string) string {
// find the longest sequence of delimiter rune
var current, longest int
for _, r := range input {
if r == delimiterRune {
current++
} else {
current = 0
}
if current > longest {
longest = current
}
}
// and then return it multipled longer than that
return strings.Repeat(string(delimiterRune), longest+1)
}
// Close closes this server and prevents any further code from being run.
func (server *Server) Close() error {
server.m.Lock()
defer server.m.Unlock()
// if the context is already closed
if err := server.c.Err(); err != nil {
return errPHPClosed
}
server.in.Close()
<-server.c.Done()
return nil
}
//go:embed server.php
var serverPHP string
// pre-process the server.php code to make it shorter
func init() {
// remove the first '<?php' line
lines := strings.Split(serverPHP, "\n")[1:]
for i, line := range lines {
lines[i] = strings.TrimSpace(line)
}
// remove comment lines
lines = collection.Filter(lines, func(line string) bool {
return !strings.HasPrefix(line, "//")
})
serverPHP = strings.Join(lines, "")
}

0
internal/wisski/ingredient/php/server.php → internal/wisski/ingredient/php/phpserver/server.php
View file

240
internal/wisski/ingredient/php/server.go
View file

@ -1,253 +1,21 @@
package php
import (
"context"
"encoding/json"
"fmt"
"io"
"os"
"strings"
"sync"
_ "embed"
"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/php/phpserver"
"github.com/alessio/shellescape"
"github.com/tkw1536/goprogram/lib/collection"
"github.com/tkw1536/goprogram/lib/nobufio"
"github.com/tkw1536/goprogram/stream"
)
// Common PHP Error
var (
errPHPInit = "Unable to initialize"
errPHPMarshal = "Marshal failed"
errPHPInvalid = ServerError{Message: "Invalid code to execute"}
errPHPReceive = "Failed to receive response"
errPHPClosed = ServerError{Message: "Server closed"}
)
// PHPError represents an error during PHPServer logic
type ServerError struct {
Message string
Err error
}
func (err ServerError) Unwrap() error {
return err.Err
}
func (err ServerError) Error() string {
if err.Err == nil {
return fmt.Sprintf("PHPServer: %s", err.Message)
}
return fmt.Sprintf("PHPServer: %s: %s", err.Message, err.Err)
}
// Throwable represents an error during php code
type Throwable string
func (throwable Throwable) Error() string {
return string(throwable)
}
type Server = phpserver.Server
// NewServer returns a new server that can execute code within this distillery.
// When err == nil, the caller must call server.Close().
//
// See [PHPServer].
func (php *PHP) NewServer() (*Server, error) {
// create input and output pipes
ir, iw, err := os.Pipe()
if err != nil {
return nil, ServerError{errPHPInit, err}
}
or, ow, err := os.Pipe()
if err != nil {
ir.Close()
iw.Close()
return nil, ServerError{errPHPInit, err}
}
// create a context to close the server
context, cancel := context.WithCancel(context.Background())
// start the shell process, which will close everything once done
go func() {
defer func() {
ir.Close()
iw.Close()
or.Close()
ow.Close()
cancel()
}()
// start the server
io := stream.NewIOStream(ow, nil, ir, 0)
php.Barrel.Shell(io, "-c", shellescape.QuoteCommand([]string{"drush", "php:eval", serverPHP}))
}()
// return the seerver
return &Server{
in: iw,
out: or,
c: context,
}, nil
}
// Server represents a server that executes code within a distillery.
// A typical use-case is to define functions using [MarshalEval], and then call those functions [MarshalCall].
//
// A nil Server will return [ErrServerBroken] on every function call.
type Server struct {
m sync.Mutex
in io.WriteCloser
out io.Reader
c context.Context
}
// MarshalEval evaluates code on the server and Marshals the result into value.
// When value is nil, the results are discarded.
//
// code is directly passed to php's "eval" function.
// as such any functions defined will remain in server memory.
//
// When an exception is thrown by the PHP Code, error is not nil, and dest remains unchanged.
func (server *Server) MarshalEval(value any, code string) error {
server.m.Lock()
defer server.m.Unlock()
// quick hack: when the server is already done
if err := server.c.Err(); err != nil {
return errPHPClosed
}
// find a delimiter for the code, and then send
delim := findDelimiter(code)
io.WriteString(server.in, delim+"\n"+code+"\n"+delim+"\n")
// read the next line (as a response)
data, err := nobufio.ReadLine(server.out)
if err != nil {
return ServerError{Message: errPHPReceive, Err: err}
}
// read whatever we received
var received [2]json.RawMessage
if err := json.Unmarshal([]byte(data), &received); err != nil {
return ServerError{Message: errPHPMarshal, Err: err}
}
// check if there was an error
var errString string
if err := json.Unmarshal(received[1], &errString); err == nil && errString != "" {
return Throwable(errString)
}
// special case: no return value => no unmarshaling needed
if value == nil {
return nil
}
// read the actual result!
return json.Unmarshal(received[0], value)
}
// Eval is like [MarshalEval], but returns the value as an any
func (server *Server) Eval(code string) (value any, err error) {
err = server.MarshalEval(&value, code)
return
}
// MarshalCall calls a previously defined function with the given arguments.
// Arguments are sent to php using json Marshal, and are 'json_decode'd on the php side.
//
// Return values are received as in [MarshalEval].
func (server *Server) MarshalCall(value any, function string, args ...any) error {
// name of function to call
name := MarshalString(function)
// generate code to call
var code string
switch len(args) {
case 0:
code = "return call_user_func(" + name + ");"
case 1:
param, err := Marshal(args[0])
if err != nil {
return err
}
code = "return call_user_func(" + name + "," + param + ");"
default:
params, err := Marshal(args)
if err != nil {
return err
}
code = "return call_user_func_array(" + name + "," + params + ");"
}
// and evaluate the code
return server.MarshalEval(value, code)
}
// Call is like [MarshalCall] but returns the return value of the function as an any
func (server *Server) Call(function string, args ...any) (value any, err error) {
err = server.MarshalCall(&value, function, args...)
return
}
const delimiterRune = 'F' // press to pay respect
// findDelimiter finds a delimiter that does not occur in the input string
func findDelimiter(input string) string {
// find the longest sequence of delimiter rune
var current, longest int
for _, r := range input {
if r == delimiterRune {
current++
} else {
current = 0
}
if current > longest {
longest = current
}
}
// and then return it multipled longer than that
return strings.Repeat(string(delimiterRune), longest+1)
}
// Close closes this server and prevents any further code from being run.
func (server *Server) Close() error {
server.m.Lock()
defer server.m.Unlock()
// if the context is already closed
if err := server.c.Err(); err != nil {
return errPHPClosed
}
server.in.Close()
<-server.c.Done()
return nil
}
//go:embed server.php
var serverPHP string
// pre-process the server.php code to make it shorter
func init() {
// remove the first '<?php' line
lines := strings.Split(serverPHP, "\n")[1:]
for i, line := range lines {
lines[i] = strings.TrimSpace(line)
}
// remove comment lines
lines = collection.Filter(lines, func(line string) bool {
return !strings.HasPrefix(line, "//")
return phpserver.New(func(str stream.IOStream, script string) {
php.Barrel.Shell(str, "-c", shellescape.QuoteCommand([]string{"drush", "php:eval", script}))
})
serverPHP = strings.Join(lines, "")
}

5
internal/wisski/wisski.go
View file

@ -97,6 +97,11 @@ func (wisski *WissKI) allIngredients() []initFunc {
// info
auto[*info.Info],
auto[*barrel.LastRebuildFetcher],
auto[*barrel.RunningFetcher],
auto[*drush.LastUpdateFetcher],
auto[*drush.LastCronFetcher],
auto[*info.SnapshotsFetcher],
// stacks
auto[*barrel.Barrel],