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package client
import (
"fmt"
"os"
"sync/atomic"
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2/pkg/pool"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/plugins/logger"
rrt "github.com/spiral/roadrunner/v2/plugins/temporal/protocol"
"go.temporal.io/sdk/client"
"go.temporal.io/sdk/converter"
"go.temporal.io/sdk/worker"
)
// PluginName defines public service name.
const PluginName = "temporal"
// indicates that the case size was set
var stickyCacheSet = false
// Plugin implement Temporal contract.
type Plugin struct {
workerID int32
cfg *Config
dc converter.DataConverter
log logger.Logger
client client.Client
}
// Temporal define common interface for RoadRunner plugins.
type Temporal interface {
GetClient() client.Client
GetDataConverter() converter.DataConverter
GetConfig() Config
GetCodec() rrt.Codec
CreateWorker(taskQueue string, options worker.Options) (worker.Worker, error)
}
// Config of the temporal client and depended services.
type Config struct {
Address string
Namespace string
Activities *pool.Config
Codec string
DebugLevel int `mapstructure:"debug_level"`
CacheSize int `mapstructure:"cache_size"`
}
// Init initiates temporal client plugin.
func (p *Plugin) Init(cfg config.Configurer, log logger.Logger) error {
const op = errors.Op("temporal_client_plugin_init")
p.log = log
p.dc = rrt.NewDataConverter(converter.GetDefaultDataConverter())
err := cfg.UnmarshalKey(PluginName, &p.cfg)
if err != nil {
return errors.E(op, err)
}
if p.cfg == nil {
return errors.E(op, errors.Disabled)
}
return nil
}
// GetConfig returns temporal configuration.
func (p *Plugin) GetConfig() Config {
if p.cfg != nil {
return *p.cfg
}
// empty
return Config{}
}
// GetCodec returns communication codec.
func (p *Plugin) GetCodec() rrt.Codec {
if p.cfg.Codec == "json" {
return rrt.NewJSONCodec(rrt.DebugLevel(p.cfg.DebugLevel), p.log)
}
// production ready protocol, no debug abilities
return rrt.NewProtoCodec()
}
// GetDataConverter returns data active data converter.
func (p *Plugin) GetDataConverter() converter.DataConverter {
return p.dc
}
// Serve starts temporal srv.
func (p *Plugin) Serve() chan error {
const op = errors.Op("temporal_client_plugin_serve")
errCh := make(chan error, 1)
var err error
if stickyCacheSet == false && p.cfg.CacheSize != 0 {
worker.SetStickyWorkflowCacheSize(p.cfg.CacheSize)
stickyCacheSet = true
}
p.client, err = client.NewClient(client.Options{
Logger: p.log,
HostPort: p.cfg.Address,
Namespace: p.cfg.Namespace,
DataConverter: p.dc,
})
if err != nil {
errCh <- errors.E(op, err)
}
p.log.Debug("connected to temporal server", "address", p.cfg.Address)
return errCh
}
// Stop stops temporal srv connection.
func (p *Plugin) Stop() error {
if p.client != nil {
p.client.Close()
}
return nil
}
// GetClient returns active srv connection.
func (p *Plugin) GetClient() client.Client {
return p.client
}
// CreateWorker allocates new temporal worker on an active connection.
func (p *Plugin) CreateWorker(tq string, options worker.Options) (worker.Worker, error) {
const op = errors.Op("temporal_client_plugin_create_worker")
if p.client == nil {
return nil, errors.E(op, errors.Str("unable to create worker, invalid temporal client"))
}
if options.Identity == "" {
if tq == "" {
tq = client.DefaultNamespace
}
// ensures unique worker IDs
options.Identity = fmt.Sprintf(
"%d@%s@%s@%v",
os.Getpid(),
getHostName(),
tq,
atomic.AddInt32(&p.workerID, 1),
)
}
return worker.New(p.client, tq, options), nil
}
// Name of the service.
func (p *Plugin) Name() string {
return PluginName
}
func getHostName() string {
hostName, err := os.Hostname()
if err != nil {
hostName = "Unknown"
}
return hostName
}
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