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service.go
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service.go
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package service
import (
"context"
"fmt"
"net/http"
"regexp"
"github.com/plgd-dev/hub/v2/grpc-gateway/client"
"github.com/plgd-dev/hub/v2/grpc-gateway/pb"
"github.com/plgd-dev/hub/v2/http-gateway/uri"
"github.com/plgd-dev/hub/v2/pkg/fsnotify"
"github.com/plgd-dev/hub/v2/pkg/log"
grpcClient "github.com/plgd-dev/hub/v2/pkg/net/grpc/client"
kitNetHttp "github.com/plgd-dev/hub/v2/pkg/net/http"
httpService "github.com/plgd-dev/hub/v2/pkg/net/http/service"
otelClient "github.com/plgd-dev/hub/v2/pkg/opentelemetry/collector/client"
"github.com/plgd-dev/hub/v2/pkg/security/jwt/validator"
"github.com/plgd-dev/hub/v2/pkg/service"
)
const (
serviceName = "http-gateway"
AuthorizationWhiteListedEndpointsRegexp = `^\/(a$|[^a].*|ap$|a[^p].*|ap[^i].*|api[^/])`
)
var authRules = map[string][]kitNetHttp.AuthArgs{
http.MethodGet: {
{
URI: regexp.MustCompile(regexp.QuoteMeta(uri.API) + `\/.*`),
},
},
http.MethodPost: {
{
URI: regexp.MustCompile(regexp.QuoteMeta(uri.API) + `\/.*`),
},
},
http.MethodDelete: {
{
URI: regexp.MustCompile(regexp.QuoteMeta(uri.API) + `\/.*`),
},
},
http.MethodPut: {
{
URI: regexp.MustCompile(regexp.QuoteMeta(uri.API) + `\/.*`),
},
},
}
// New parses configuration and creates new Server with provided store and bus
func New(ctx context.Context, config Config, fileWatcher *fsnotify.Watcher, logger log.Logger) (*service.Service, error) {
otelClient, err := otelClient.New(ctx, config.Clients.OpenTelemetryCollector.Config, serviceName, fileWatcher, logger)
if err != nil {
return nil, fmt.Errorf("cannot create open telemetry collector client: %w", err)
}
tracerProvider := otelClient.GetTracerProvider()
validator, err := validator.New(ctx, config.APIs.HTTP.Authorization, fileWatcher, logger, tracerProvider)
if err != nil {
otelClient.Close()
return nil, fmt.Errorf("cannot create validator: %w", err)
}
whiteList := []kitNetHttp.RequestMatcher{
{
Method: http.MethodGet,
URI: regexp.MustCompile(regexp.QuoteMeta(uri.APIWS) + `.*`),
},
{
Method: http.MethodGet,
URI: regexp.MustCompile(regexp.QuoteMeta(uri.HubConfiguration)),
},
}
if config.UI.Enabled {
whiteList = append(whiteList, kitNetHttp.RequestMatcher{
Method: http.MethodGet,
URI: regexp.MustCompile(AuthorizationWhiteListedEndpointsRegexp),
})
}
s, err := httpService.New(ctx, httpService.Config{
HTTPConnection: config.APIs.HTTP.Connection,
HTTPServer: config.APIs.HTTP.Server,
ServiceName: serviceName,
AuthRules: authRules,
WhiteEndpointList: whiteList,
FileWatcher: fileWatcher,
Logger: logger,
TraceProvider: tracerProvider,
Validator: validator,
QueryCaseInsensitive: uri.QueryCaseInsensitive,
})
if err != nil {
otelClient.Close()
validator.Close()
return nil, fmt.Errorf("cannot create http service: %w", err)
}
s.AddCloseFunc(otelClient.Close)
s.AddCloseFunc(validator.Close)
grpcConn, err := grpcClient.New(config.Clients.GrpcGateway.Connection, fileWatcher, logger, tracerProvider)
if err != nil {
return nil, fmt.Errorf("cannot connect to grpc-gateway: %w", err)
}
s.AddCloseFunc(func() {
err := grpcConn.Close()
if err != nil {
logger.Errorf("error occurs during close connection to grpc-gateway: %v", err)
}
})
grpcClient := pb.NewGrpcGatewayClient(grpcConn.GRPC())
client := client.New(grpcClient)
_, err = NewRequestHandler(&config, s.GetRouter(), client)
if err != nil {
err = fmt.Errorf("cannot create request handler: %w", err)
err2 := s.Close()
if err2 != nil {
err = fmt.Errorf(`[%w, "cannot close server: %v"]`, err, err2)
}
return nil, err
}
return service.New(s), nil
}