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fissionproxy.go
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fissionproxy.go
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package bundle
import (
"context"
"net/http"
"os"
"time"
"github.com/fission/fission-workflows/pkg/apiserver"
"github.com/fission/fission-workflows/pkg/apiserver/fission"
"github.com/gorilla/handlers"
log "github.com/sirupsen/logrus"
"github.com/urfave/cli"
"google.golang.org/grpc"
)
type FissionProxyConfig struct {
DefaultTimeout time.Duration
ProxyAddr string
WorkflowsAddr string
ExposeMetrics bool
server *http.Server
}
func ParseFissionProxyConfig(ctx *cli.Context) (*FissionProxyConfig, error) {
if ctx.Bool("fission.proxy") {
return nil, nil
}
return &FissionProxyConfig{
WorkflowsAddr: gRPCAddress,
ProxyAddr: ctx.String("fission.proxy.addr"),
DefaultTimeout: ctx.Duration("fission.proxy.timeout"),
ExposeMetrics: ctx.Bool("metrics"),
}, nil
}
func (c *FissionProxyConfig) Run() error {
if c == nil {
return nil
}
conn, err := grpc.Dial(c.ProxyAddr, grpc.WithInsecure())
if err != nil {
panic(err)
}
proxyMux := http.NewServeMux()
fissionProxyServer := fission.NewEnvironmentProxyServer(apiserver.NewClient(conn), c.DefaultTimeout)
fissionProxyServer.RegisterServer(proxyMux)
fissionProxySrv := &http.Server{
Addr: c.ProxyAddr,
Handler: handlers.LoggingHandler(os.Stdout, proxyMux),
}
log.Infof("Serving HTTP Fission Proxy at: %s", fissionProxySrv.Addr)
err = fissionProxySrv.ListenAndServe()
log.Infof("Fission Proxy server stopped: %v", err)
return err
}
func (c *FissionProxyConfig) Close() error {
if c == nil {
return nil
}
err := c.server.Shutdown(context.Background())
if err != nil {
log.Errorf("Failed to stop Fission Proxy server: %v", err)
return err
}
log.Info("Stopped Fission Proxy server")
return nil
}