The cluster listener supports a `max_request_duration` option, and
defaults to 90 seconds. However, this configuration was not being use
when processing grpc requests from the listener. This meant that
requests from worker to controller could hang indefinitely and
contributed to the recently fixed issue with database connections being
stuck in `idle in transaction`.
This commit adds a grpc interceptor that ensures each request has a
deadline set to the max request duration for the listener.
Refs: 29cd7bc9d6
558 lines
18 KiB
Go
558 lines
18 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package controller
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import (
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"context"
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"fmt"
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"net/http"
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"reflect"
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"runtime/debug"
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"time"
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grpc_recovery "github.com/grpc-ecosystem/go-grpc-middleware/recovery"
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"github.com/hashicorp/boundary/globals"
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"github.com/hashicorp/boundary/internal/alias"
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commonSrv "github.com/hashicorp/boundary/internal/daemon/common"
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"github.com/hashicorp/boundary/internal/daemon/controller/auth"
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"github.com/hashicorp/boundary/internal/daemon/controller/common"
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"github.com/hashicorp/boundary/internal/daemon/controller/handlers"
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"github.com/hashicorp/boundary/internal/errors"
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"github.com/hashicorp/boundary/internal/event"
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pb "github.com/hashicorp/boundary/internal/gen/controller/api"
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authpb "github.com/hashicorp/boundary/internal/gen/controller/auth"
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pberrors "github.com/hashicorp/boundary/internal/gen/errors"
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"github.com/hashicorp/boundary/internal/kms"
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"github.com/hashicorp/boundary/internal/requests"
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"github.com/hashicorp/go-uuid"
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"github.com/mr-tron/base58"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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"google.golang.org/protobuf/proto"
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)
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const (
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requestInfoMdKey = "request-info"
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// domainErrHeader defines an http header for encoded domain errors from the
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// grpc server.
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domainErrHeader = "x-domain-err"
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// apiErrHeader defines an http header for encoded api errors from the
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// grpc server.
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apiErrHeader = "x-api-err"
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)
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// customContextServerStream wraps the grpc.ServerStream interface and lets us
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// set a custom context
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type customContextServerStream struct {
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grpc.ServerStream
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customContext context.Context
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}
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func (c *customContextServerStream) Context() context.Context {
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if c.customContext != nil {
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return c.customContext
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}
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return c.ServerStream.Context()
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}
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// requestCtxUnaryInterceptor creates an unary server interceptor that pulls
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// grpc metadata into a ctx for the request. The metadata must be set in an
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// upstream http handler/middleware by marshalling a RequestInfo protobuf into
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// the requestInfoMdKey header (see: controller.wrapHandlerWithCommonFuncs).
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func requestCtxUnaryInterceptor(
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ctx context.Context,
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iamRepoFn common.IamRepoFactory,
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authTokenRepoFn common.AuthTokenRepoFactory,
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serversRepoFn common.ServersRepoFactory,
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passwordAuthRepoFn common.PasswordAuthRepoFactory,
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oidcAuthRepoFn common.OidcAuthRepoFactory,
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ldapAuthRepoFn common.LdapAuthRepoFactory,
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kms *kms.Kms,
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ticket string,
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eventer *event.Eventer,
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) (grpc.UnaryServerInterceptor, error) {
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const op = "controller.requestCtxUnaryInterceptor"
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if err := sharedRequestInterceptorValidation(
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ctx,
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op,
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iamRepoFn,
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authTokenRepoFn,
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serversRepoFn,
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kms,
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ticket,
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eventer,
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); err != nil {
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return nil, err
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}
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler,
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) (any, error) {
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updatedCtx, err := sharedRequestInterceptorLogic(
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interceptorCtx,
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op,
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iamRepoFn,
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authTokenRepoFn,
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serversRepoFn,
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passwordAuthRepoFn,
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oidcAuthRepoFn,
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ldapAuthRepoFn,
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kms,
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ticket,
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eventer,
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)
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if err != nil {
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return nil, err
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}
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return handler(updatedCtx, req)
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}, nil
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}
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// requestCtxStreamInterceptor creates a stream server interceptor that pulls
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// grpc metadata into a ctx for the request. The metadata must be set in an
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// upstream http handler/middleware by marshalling a RequestInfo protobuf into
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// the requestInfoMdKey header (see: controller.wrapHandlerWithCommonFuncs).
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func requestCtxStreamInterceptor(
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ctx context.Context,
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iamRepoFn common.IamRepoFactory,
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authTokenRepoFn common.AuthTokenRepoFactory,
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serversRepoFn common.ServersRepoFactory,
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passwordAuthRepoFn common.PasswordAuthRepoFactory,
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oidcAuthRepoFn common.OidcAuthRepoFactory,
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ldapAuthRepoFn common.LdapAuthRepoFactory,
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kms *kms.Kms,
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ticket string,
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eventer *event.Eventer,
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) (grpc.StreamServerInterceptor, error) {
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const op = "controller.requestCtxStreamInterceptor"
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if err := sharedRequestInterceptorValidation(
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ctx,
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op,
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iamRepoFn,
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authTokenRepoFn,
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serversRepoFn,
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kms,
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ticket,
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eventer,
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); err != nil {
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return nil, err
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}
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return func(srv any,
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ss grpc.ServerStream,
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info *grpc.StreamServerInfo,
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handler grpc.StreamHandler,
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) error {
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updatedCtx, err := sharedRequestInterceptorLogic(
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ss.Context(),
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op,
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iamRepoFn,
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authTokenRepoFn,
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serversRepoFn,
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passwordAuthRepoFn,
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oidcAuthRepoFn,
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ldapAuthRepoFn,
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kms,
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ticket,
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eventer,
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)
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if err != nil {
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return err
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}
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css := &customContextServerStream{
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ServerStream: ss,
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customContext: updatedCtx,
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}
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return handler(srv, css)
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}, nil
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}
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func sharedRequestInterceptorValidation(
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ctx context.Context,
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op errors.Op,
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iamRepoFn common.IamRepoFactory,
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authTokenRepoFn common.AuthTokenRepoFactory,
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serversRepoFn common.ServersRepoFactory,
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kms *kms.Kms,
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ticket string,
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eventer *event.Eventer,
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) error {
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if iamRepoFn == nil {
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return errors.New(ctx, errors.InvalidParameter, op, "missing iam repo function")
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}
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if authTokenRepoFn == nil {
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return errors.New(ctx, errors.InvalidParameter, op, "missing auth token repo function")
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}
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if serversRepoFn == nil {
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return errors.New(ctx, errors.InvalidParameter, op, "missing server repo function")
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}
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if kms == nil {
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return errors.New(ctx, errors.InvalidParameter, op, "missing kms")
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}
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if ticket == "" {
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return errors.New(ctx, errors.InvalidParameter, op, "missing ticket")
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}
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if eventer == nil {
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return errors.New(ctx, errors.InvalidParameter, op, "missing eventer")
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}
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return nil
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}
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func sharedRequestInterceptorLogic(
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interceptorCtx context.Context,
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op errors.Op,
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iamRepoFn common.IamRepoFactory,
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authTokenRepoFn common.AuthTokenRepoFactory,
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serversRepoFn common.ServersRepoFactory,
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passwordAuthRepoFn common.PasswordAuthRepoFactory,
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oidcAuthRepoFn common.OidcAuthRepoFactory,
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ldapAuthRepoFn common.LdapAuthRepoFactory,
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kms *kms.Kms,
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ticket string,
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eventer *event.Eventer,
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) (context.Context, error) {
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md, ok := metadata.FromIncomingContext(interceptorCtx)
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if !ok {
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return nil, errors.New(interceptorCtx, errors.Internal, op, "No metadata")
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}
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values := md.Get(requestInfoMdKey)
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if len(values) == 0 {
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return nil, errors.New(interceptorCtx, errors.Internal, op, "Missing request metadata")
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}
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if len(values) > 1 {
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return nil, errors.New(interceptorCtx, errors.Internal, op, fmt.Sprintf("expected 1 value for %s metadata and got %d", requestInfoMdKey, len(values)))
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}
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decoded, err := base58.FastBase58Decoding(values[0])
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if err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithCode(errors.Internal), errors.WithMsg("unable to decode request info"))
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}
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var requestInfo authpb.RequestInfo
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if err := proto.Unmarshal(decoded, &requestInfo); err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithCode(errors.Internal), errors.WithMsg("unable to unmarshal request info"))
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}
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switch {
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case requestInfo.Ticket == "":
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return nil, errors.New(interceptorCtx, errors.Internal, op, "Invalid context (missing ticket)")
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case requestInfo.Ticket != ticket:
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return nil, errors.New(interceptorCtx, errors.Internal, op, "Invalid context (bad ticket)")
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}
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interceptorCtx = auth.NewVerifierContextWithAccounts(interceptorCtx, iamRepoFn, authTokenRepoFn, serversRepoFn, passwordAuthRepoFn, oidcAuthRepoFn, ldapAuthRepoFn, kms, &requestInfo)
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// Add general request information to the context. The information from
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// the auth verifier context is pretty specifically curated to
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// authentication/authorization verification so this is more
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// general-purpose.
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//
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// We could use requests.NewRequestContext but this saves an immediate
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// lookup.
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interceptorCtx = context.WithValue(interceptorCtx, requests.ContextRequestInformationKey, &requests.RequestContext{
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Path: requestInfo.Path,
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Method: requestInfo.Method,
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})
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// This event request info is required by downstream handlers
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info := &event.RequestInfo{
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EventId: requestInfo.EventId,
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Id: requestInfo.TraceId,
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PublicId: requestInfo.PublicId,
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Method: requestInfo.Method,
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Path: requestInfo.Path,
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ClientIp: requestInfo.ClientIp,
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}
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interceptorCtx, err = event.NewRequestInfoContext(interceptorCtx, info)
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if err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithCode(errors.Internal), errors.WithMsg("unable to create context with request info"))
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}
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interceptorCtx, err = event.NewEventerContext(interceptorCtx, eventer)
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if err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithCode(errors.Internal), errors.WithMsg("unable to create context with eventer"))
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}
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return interceptorCtx, err // not convinced we want to wrap every error and turn them into domain errors...
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}
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func correlationIdInterceptor(
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_ context.Context,
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) grpc.UnaryServerInterceptor {
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const op = "controller.correlationIdInterceptor"
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return func(interceptorCtx context.Context, req any,
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_ *grpc.UnaryServerInfo, handler grpc.UnaryHandler,
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) (any, error) {
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md, ok := metadata.FromIncomingContext(interceptorCtx)
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if !ok {
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return nil, errors.New(interceptorCtx, errors.Internal, op, "no metadata")
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}
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values := md.Get(globals.CorrelationIdKey)
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if len(values) == 0 {
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return nil, errors.New(interceptorCtx, errors.Internal, op, "missing correlation id metadata")
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}
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if len(values) > 1 {
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return nil, errors.New(interceptorCtx, errors.Internal, op, fmt.Sprintf("expected 1 value for %s metadata and got %d", globals.CorrelationIdKey, len(values)))
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}
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correlationId := values[0]
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// Validate the correlationId
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if _, err := uuid.ParseUUID(correlationId); err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithMsg("failed to validated correlation id"))
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}
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interceptorCtx, err := event.NewCorrelationIdContext(interceptorCtx, correlationId)
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if err != nil {
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return nil, errors.Wrap(interceptorCtx, err, op, errors.WithCode(errors.Internal), errors.WithMsg("unable to create context with correlation id"))
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}
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// call the handler...
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return handler(interceptorCtx, req)
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}
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}
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func errorInterceptor(
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_ context.Context,
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) grpc.UnaryServerInterceptor {
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const op = "controller.errorInterceptor"
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (any, error,
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) {
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// call the handler...
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h, handlerErr := handler(interceptorCtx, req)
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// if there's an error and it's a domain err, then encode it into the
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if handlerErr != nil {
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var domainErr *errors.Err
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isDomainErr := errors.As(handlerErr, &domainErr)
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if isDomainErr {
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pbErr := errors.ToPbErrors(domainErr)
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var buf []byte
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var err error
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if buf, err = proto.Marshal(pbErr); err != nil {
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return h, status.Errorf(codes.Internal, "unable to marshal domain error: %s", err)
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}
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if err := grpc.SetHeader(interceptorCtx, metadata.Pairs(domainErrHeader, base58.FastBase58Encoding(buf))); err != nil {
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return h, status.Errorf(codes.Internal, "unable to set domain error header: %s", err)
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}
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return h, handlerErr
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}
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var apiErr *handlers.ApiError
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isApiError := errors.As(handlerErr, &apiErr)
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if isApiError {
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pbErr := &pberrors.ApiError{
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ApiError: apiErr.Inner,
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Status: apiErr.Status,
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}
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var buf []byte
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var err error
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if buf, err = proto.Marshal(pbErr); err != nil {
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return h, status.Errorf(codes.Internal, "unable to marshal api error: %s", err)
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}
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if err := grpc.SetHeader(interceptorCtx, metadata.Pairs(apiErrHeader, base58.FastBase58Encoding(buf))); err != nil {
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return h, status.Errorf(codes.Internal, "unable to set api error header: %s", err)
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}
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return h, handlerErr
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}
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}
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return h, handlerErr
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}
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}
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// aliasResolutionInterceptor returns a grpc.UnaryServerInterceptor that resolves
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// alias values in the request to their corresponding destination ids. If no
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// alias is found or the alias has no destination id, an error is returned.
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// For an field in the request to be considered for alias resolution, it must
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// be annotated with the Aliasable proto option.
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func aliasResolutionInterceptor(
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_ context.Context,
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aliasRepoFn common.AliasRepoFactory,
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) grpc.UnaryServerInterceptor {
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (any, error,
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) {
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reqMsg, ok := req.(proto.Message)
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if !ok {
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return nil, handlers.InvalidArgumentErrorf("The request was not a proto.Message.", nil)
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}
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r, err := aliasRepoFn()
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if err != nil {
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return nil, err
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}
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interceptorCtx, err = alias.ResolveRequestIds(interceptorCtx, reqMsg, r)
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if err != nil {
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// Since this is intercepted prior to checking that the requester
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// is authorized to make the request, returning a 404 here and a 401
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// when the request is checked in the handler would expose which
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// aliases exist. Instead, we return a unauthenticated error here so there
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// is no way to distinguish between a missing alias and an existing
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// alias that points to a destination the requester is not allowed
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// to perform an action on.
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// handlers.UnauthenticatedError() turns into an http 401 status
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// code "Unauthorized".
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return nil, handlers.UnauthenticatedError()
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}
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return handler(interceptorCtx, req)
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}
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}
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func statusCodeInterceptor(
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_ context.Context,
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) grpc.UnaryServerInterceptor {
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const op = "controller.statusCodeInterceptor"
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (any, error,
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) {
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// call the handler...
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h, handlerErr := handler(interceptorCtx, req)
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// if a service handler returns nil, nil then we want to single a 204
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// response to the proxy with no resp msg
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if isNil(h) && handlerErr == nil {
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if err := handlers.SetStatusCode(interceptorCtx, http.StatusNoContent); err != nil {
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return &pb.EmptyResponse{}, err
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}
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return &pb.EmptyResponse{}, nil
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}
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return h, handlerErr
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}
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}
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func isNil(i any) bool {
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if i == nil {
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return true
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}
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switch reflect.TypeOf(i).Kind() {
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case reflect.Ptr, reflect.Map, reflect.Array, reflect.Chan, reflect.Slice:
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return reflect.ValueOf(i).IsNil()
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}
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return false
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}
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|
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func eventsRequestInterceptor(
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_ context.Context,
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) grpc.UnaryServerInterceptor {
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const op = "controller.eventsRequestInterceptor"
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (any, error,
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) {
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if msg, ok := req.(proto.Message); ok {
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// Clone the request before writing it to the audit log,
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// in case downstream interceptors modify it.
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clonedMsg := proto.Clone(msg)
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if err := event.WriteAudit(interceptorCtx, op, event.WithRequest(&event.Request{Details: clonedMsg})); err != nil {
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return req, status.Errorf(codes.Internal, "unable to write request msg audit: %s", err)
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}
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if err := event.WriteObservation(interceptorCtx, op, event.WithRequest(&event.Request{Details: clonedMsg})); err != nil {
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return req, status.Errorf(codes.Internal, "unable to write request msg observation: %s", err)
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}
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}
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return handler(interceptorCtx, req)
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}
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}
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|
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func eventsResponseInterceptor(
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_ context.Context,
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) grpc.UnaryServerInterceptor {
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const op = "controller.eventsResponseInterceptor"
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return func(interceptorCtx context.Context,
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req any,
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_ *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (any, error,
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) {
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// call the handler...
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resp, err := handler(interceptorCtx, req)
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|
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if msg, ok := resp.(proto.Message); ok {
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// Clone the response before writing it to the audit log,
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|
// in case downstream interceptors modify it.
|
|
clonedMsg := proto.Clone(msg)
|
|
if err := event.WriteAudit(interceptorCtx, op, event.WithResponse(&event.Response{Details: clonedMsg})); err != nil {
|
|
return req, status.Errorf(codes.Internal, "unable to write response msg audit: %s", err)
|
|
}
|
|
if err := event.WriteObservation(interceptorCtx, op, event.WithResponse(&event.Response{Details: clonedMsg})); err != nil {
|
|
return req, status.Errorf(codes.Internal, "unable to write response msg observation: %s", err)
|
|
}
|
|
}
|
|
|
|
return resp, err
|
|
}
|
|
}
|
|
|
|
func requestMaxDurationInterceptor(_ context.Context, maxRequestDuration time.Duration) grpc.UnaryServerInterceptor {
|
|
const op = "controller.requestMaxDurationInterceptor"
|
|
return func(interceptorCtx context.Context, req any, _ *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (any, error) {
|
|
withTimeout, cancel := context.WithTimeout(interceptorCtx, maxRequestDuration)
|
|
defer cancel()
|
|
return handler(withTimeout, req)
|
|
}
|
|
}
|
|
|
|
func workerRequestInfoInterceptor(ctx context.Context, eventer *event.Eventer) (grpc.UnaryServerInterceptor, error) {
|
|
const op = "worker.requestInfoInterceptor"
|
|
if eventer == nil {
|
|
return nil, errors.New(ctx, errors.InvalidParameter, op, "missing eventer")
|
|
}
|
|
return func(interceptorCtx context.Context,
|
|
req any,
|
|
srvInfo *grpc.UnaryServerInfo,
|
|
handler grpc.UnaryHandler,
|
|
) (any, error) {
|
|
var err error
|
|
id, err := event.NewId(event.IdPrefix)
|
|
if err != nil {
|
|
event.WriteError(interceptorCtx, op, err, event.WithInfoMsg("unable to create id for event", "method", srvInfo.FullMethod))
|
|
return nil, status.Errorf(codes.Internal, "Error creating id for event: %v", err)
|
|
}
|
|
info := &event.RequestInfo{
|
|
EventId: id,
|
|
Id: commonSrv.GeneratedTraceId(interceptorCtx),
|
|
Method: srvInfo.FullMethod,
|
|
}
|
|
interceptorCtx, err = event.NewRequestInfoContext(interceptorCtx, info)
|
|
if err != nil {
|
|
event.WriteError(interceptorCtx, op, err, event.WithInfoMsg("unable to create context with request info", "method", srvInfo.FullMethod))
|
|
return nil, status.Errorf(codes.Internal, "Error creating context with request info: %v", err)
|
|
}
|
|
interceptorCtx, err = event.NewEventerContext(interceptorCtx, eventer)
|
|
if err != nil {
|
|
event.WriteError(interceptorCtx, op, err, event.WithInfoMsg("unable to create context with eventer", "method", srvInfo.FullMethod))
|
|
return nil, status.Errorf(codes.Internal, "Error creating context with eventer: %v", err)
|
|
}
|
|
// call the handler...
|
|
return handler(interceptorCtx, req)
|
|
}, nil
|
|
}
|
|
|
|
func recoveryHandler() grpc_recovery.RecoveryHandlerFuncContext {
|
|
const op = "controller.recoveryHandler"
|
|
return func(ctx context.Context, p any) (err error) {
|
|
event.WriteError(
|
|
ctx,
|
|
op,
|
|
fmt.Errorf("recovered from panic: %v", p),
|
|
event.WithInfo("stack", string(debug.Stack())),
|
|
)
|
|
|
|
return status.Errorf(codes.Internal, "%v", p)
|
|
}
|
|
}
|