X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/8b873a9b3b8865a4d451263e48b49122b9c32759..7499f61a2912cfdb1a316808fafa6e6ee77ee2e0:/lib/controller/federation/conn.go

diff --git a/lib/controller/federation/conn.go b/lib/controller/federation/conn.go
index 3bcafacd2c..61cac9bbab 100644
--- a/lib/controller/federation/conn.go
+++ b/lib/controller/federation/conn.go
@@ -7,7 +7,6 @@ package federation
 import (
 	"bytes"
 	"context"
-	"crypto/md5"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -15,13 +14,14 @@ import (
 	"net/url"
 	"regexp"
 	"strings"
-
-	"git.curoverse.com/arvados.git/lib/config"
-	"git.curoverse.com/arvados.git/lib/controller/railsproxy"
-	"git.curoverse.com/arvados.git/lib/controller/rpc"
-	"git.curoverse.com/arvados.git/sdk/go/arvados"
-	"git.curoverse.com/arvados.git/sdk/go/auth"
-	"git.curoverse.com/arvados.git/sdk/go/ctxlog"
+	"time"
+
+	"git.arvados.org/arvados.git/lib/config"
+	"git.arvados.org/arvados.git/lib/controller/localdb"
+	"git.arvados.org/arvados.git/lib/controller/rpc"
+	"git.arvados.org/arvados.git/sdk/go/arvados"
+	"git.arvados.org/arvados.git/sdk/go/auth"
+	"git.arvados.org/arvados.git/sdk/go/ctxlog"
 )
 
 type Conn struct {
@@ -31,13 +31,17 @@ type Conn struct {
 }
 
 func New(cluster *arvados.Cluster) *Conn {
-	local := railsproxy.NewConn(cluster)
+	local := localdb.NewConn(cluster)
 	remotes := map[string]backend{}
 	for id, remote := range cluster.RemoteClusters {
-		if !remote.Proxy {
+		if !remote.Proxy || id == cluster.ClusterID {
 			continue
 		}
-		remotes[id] = rpc.NewConn(id, &url.URL{Scheme: remote.Scheme, Host: remote.Host}, remote.Insecure, saltedTokenProvider(local, id))
+		conn := rpc.NewConn(id, &url.URL{Scheme: remote.Scheme, Host: remote.Host}, remote.Insecure, saltedTokenProvider(local, id))
+		// Older versions of controller rely on the Via header
+		// to detect loops.
+		conn.SendHeader = http.Header{"Via": {"HTTP/1.1 arvados-controller"}}
+		remotes[id] = conn
 	}
 
 	return &Conn{
@@ -107,6 +111,13 @@ func (conn *Conn) chooseBackend(id string) backend {
 	}
 }
 
+func (conn *Conn) localOrLoginCluster() backend {
+	if conn.cluster.Login.LoginCluster != "" {
+		return conn.chooseBackend(conn.cluster.Login.LoginCluster)
+	}
+	return conn.local
+}
+
 // Call fn with the local backend; then, if fn returned 404, call fn
 // on the available remote backends (possibly concurrently) until one
 // succeeds.
@@ -115,8 +126,13 @@ func (conn *Conn) chooseBackend(id string) backend {
 // or "" for the local backend.
 //
 // A non-nil error means all backends failed.
-func (conn *Conn) tryLocalThenRemotes(ctx context.Context, fn func(context.Context, string, backend) error) error {
-	if err := fn(ctx, "", conn.local); err == nil || errStatus(err) != http.StatusNotFound {
+func (conn *Conn) tryLocalThenRemotes(ctx context.Context, forwardedFor string, fn func(context.Context, string, backend) error) error {
+	if err := fn(ctx, "", conn.local); err == nil || errStatus(err) != http.StatusNotFound || forwardedFor != "" {
+		// Note: forwardedFor != "" means this request came
+		// from a remote cluster, so we don't take a second
+		// hop. This avoids cycles, redundant calls to a
+		// mutually reachable remote, and use of double-salted
+		// tokens.
 		return err
 	}
 
@@ -159,30 +175,62 @@ func rewriteManifest(mt, remoteID string) string {
 	})
 }
 
-// this could be in sdk/go/arvados
-func portableDataHash(mt string) string {
-	h := md5.New()
-	blkRe := regexp.MustCompile(`^ [0-9a-f]{32}\+\d+`)
-	size := 0
-	_ = regexp.MustCompile(` ?[^ ]*`).ReplaceAllFunc([]byte(mt), func(tok []byte) []byte {
-		if m := blkRe.Find(tok); m != nil {
-			// write hash+size, ignore remaining block hints
-			tok = m
+func (conn *Conn) ConfigGet(ctx context.Context) (json.RawMessage, error) {
+	var buf bytes.Buffer
+	err := config.ExportJSON(&buf, conn.cluster)
+	return json.RawMessage(buf.Bytes()), err
+}
+
+func (conn *Conn) Login(ctx context.Context, options arvados.LoginOptions) (arvados.LoginResponse, error) {
+	if id := conn.cluster.Login.LoginCluster; id != "" && id != conn.cluster.ClusterID {
+		// defer entire login procedure to designated cluster
+		remote, ok := conn.remotes[id]
+		if !ok {
+			return arvados.LoginResponse{}, fmt.Errorf("configuration problem: designated login cluster %q is not defined", id)
 		}
-		n, err := h.Write(tok)
+		baseURL := remote.BaseURL()
+		target, err := baseURL.Parse(arvados.EndpointLogin.Path)
 		if err != nil {
-			panic(err)
+			return arvados.LoginResponse{}, fmt.Errorf("internal error getting redirect target: %s", err)
 		}
-		size += n
-		return nil
-	})
-	return fmt.Sprintf("%x+%d", h.Sum(nil), size)
+		params := url.Values{
+			"return_to": []string{options.ReturnTo},
+		}
+		if options.Remote != "" {
+			params.Set("remote", options.Remote)
+		}
+		target.RawQuery = params.Encode()
+		return arvados.LoginResponse{
+			RedirectLocation: target.String(),
+		}, nil
+	}
+	return conn.local.Login(ctx, options)
 }
 
-func (conn *Conn) ConfigGet(ctx context.Context) (json.RawMessage, error) {
-	var buf bytes.Buffer
-	err := config.ExportJSON(&buf, conn.cluster)
-	return json.RawMessage(buf.Bytes()), err
+func (conn *Conn) Logout(ctx context.Context, options arvados.LogoutOptions) (arvados.LogoutResponse, error) {
+	// If the logout request comes with an API token from a known
+	// remote cluster, redirect to that cluster's logout handler
+	// so it has an opportunity to clear sessions, expire tokens,
+	// etc. Otherwise use the local endpoint.
+	reqauth, ok := auth.FromContext(ctx)
+	if !ok || len(reqauth.Tokens) == 0 || len(reqauth.Tokens[0]) < 8 || !strings.HasPrefix(reqauth.Tokens[0], "v2/") {
+		return conn.local.Logout(ctx, options)
+	}
+	id := reqauth.Tokens[0][3:8]
+	if id == conn.cluster.ClusterID {
+		return conn.local.Logout(ctx, options)
+	}
+	remote, ok := conn.remotes[id]
+	if !ok {
+		return conn.local.Logout(ctx, options)
+	}
+	baseURL := remote.BaseURL()
+	target, err := baseURL.Parse(arvados.EndpointLogout.Path)
+	if err != nil {
+		return arvados.LogoutResponse{}, fmt.Errorf("internal error getting redirect target: %s", err)
+	}
+	target.RawQuery = url.Values{"return_to": {options.ReturnTo}}.Encode()
+	return arvados.LogoutResponse{RedirectLocation: target.String()}, nil
 }
 
 func (conn *Conn) CollectionGet(ctx context.Context, options arvados.GetOptions) (arvados.Collection, error) {
@@ -193,38 +241,43 @@ func (conn *Conn) CollectionGet(ctx context.Context, options arvados.GetOptions)
 			c.ManifestText = rewriteManifest(c.ManifestText, options.UUID[:5])
 		}
 		return c, err
-	} else {
-		// UUID is a PDH
-		first := make(chan arvados.Collection, 1)
-		err := conn.tryLocalThenRemotes(ctx, func(ctx context.Context, remoteID string, be backend) error {
-			c, err := be.CollectionGet(ctx, options)
-			if err != nil {
-				return err
-			}
-			// options.UUID is either hash+size or
-			// hash+size+hints; only hash+size need to
-			// match the computed PDH.
-			if pdh := portableDataHash(c.ManifestText); pdh != options.UUID && !strings.HasPrefix(options.UUID, pdh+"+") {
-				err = httpErrorf(http.StatusBadGateway, "bad portable data hash %q received from remote %q (expected %q)", pdh, remoteID, options.UUID)
-				ctxlog.FromContext(ctx).Warn(err)
-				return err
-			}
-			if remoteID != "" {
-				c.ManifestText = rewriteManifest(c.ManifestText, remoteID)
-			}
-			select {
-			case first <- c:
-				return nil
-			default:
-				// lost race, return value doesn't matter
-				return nil
-			}
-		})
+	}
+	// UUID is a PDH
+	first := make(chan arvados.Collection, 1)
+	err := conn.tryLocalThenRemotes(ctx, options.ForwardedFor, func(ctx context.Context, remoteID string, be backend) error {
+		remoteOpts := options
+		remoteOpts.ForwardedFor = conn.cluster.ClusterID + "-" + options.ForwardedFor
+		c, err := be.CollectionGet(ctx, remoteOpts)
 		if err != nil {
-			return arvados.Collection{}, err
+			return err
+		}
+		// options.UUID is either hash+size or
+		// hash+size+hints; only hash+size need to
+		// match the computed PDH.
+		if pdh := arvados.PortableDataHash(c.ManifestText); pdh != options.UUID && !strings.HasPrefix(options.UUID, pdh+"+") {
+			err = httpErrorf(http.StatusBadGateway, "bad portable data hash %q received from remote %q (expected %q)", pdh, remoteID, options.UUID)
+			ctxlog.FromContext(ctx).Warn(err)
+			return err
+		}
+		if remoteID != "" {
+			c.ManifestText = rewriteManifest(c.ManifestText, remoteID)
+		}
+		select {
+		case first <- c:
+			return nil
+		default:
+			// lost race, return value doesn't matter
+			return nil
 		}
-		return <-first, nil
+	})
+	if err != nil {
+		return arvados.Collection{}, err
 	}
+	return <-first, nil
+}
+
+func (conn *Conn) CollectionList(ctx context.Context, options arvados.ListOptions) (arvados.CollectionList, error) {
+	return conn.generated_CollectionList(ctx, options)
 }
 
 func (conn *Conn) CollectionProvenance(ctx context.Context, options arvados.GetOptions) (map[string]interface{}, error) {
@@ -247,6 +300,10 @@ func (conn *Conn) CollectionUntrash(ctx context.Context, options arvados.Untrash
 	return conn.chooseBackend(options.UUID).CollectionUntrash(ctx, options)
 }
 
+func (conn *Conn) ContainerList(ctx context.Context, options arvados.ListOptions) (arvados.ContainerList, error) {
+	return conn.generated_ContainerList(ctx, options)
+}
+
 func (conn *Conn) ContainerCreate(ctx context.Context, options arvados.CreateOptions) (arvados.Container, error) {
 	return conn.chooseBackend(options.ClusterID).ContainerCreate(ctx, options)
 }
@@ -271,6 +328,10 @@ func (conn *Conn) ContainerUnlock(ctx context.Context, options arvados.GetOption
 	return conn.chooseBackend(options.UUID).ContainerUnlock(ctx, options)
 }
 
+func (conn *Conn) SpecimenList(ctx context.Context, options arvados.ListOptions) (arvados.SpecimenList, error) {
+	return conn.generated_SpecimenList(ctx, options)
+}
+
 func (conn *Conn) SpecimenCreate(ctx context.Context, options arvados.CreateOptions) (arvados.Specimen, error) {
 	return conn.chooseBackend(options.ClusterID).SpecimenCreate(ctx, options)
 }
@@ -287,11 +348,189 @@ func (conn *Conn) SpecimenDelete(ctx context.Context, options arvados.DeleteOpti
 	return conn.chooseBackend(options.UUID).SpecimenDelete(ctx, options)
 }
 
+var userAttrsCachedFromLoginCluster = map[string]bool{
+	"created_at":  true,
+	"email":       true,
+	"first_name":  true,
+	"is_active":   true,
+	"is_admin":    true,
+	"last_name":   true,
+	"modified_at": true,
+	"prefs":       true,
+	"username":    true,
+
+	"etag":                    false,
+	"full_name":               false,
+	"identity_url":            false,
+	"is_invited":              false,
+	"modified_by_client_uuid": false,
+	"modified_by_user_uuid":   false,
+	"owner_uuid":              false,
+	"uuid":                    false,
+	"writable_by":             false,
+}
+
+func (conn *Conn) batchUpdateUsers(ctx context.Context,
+	options arvados.ListOptions,
+	items []arvados.User) (err error) {
+
+	id := conn.cluster.Login.LoginCluster
+	logger := ctxlog.FromContext(ctx)
+	batchOpts := arvados.UserBatchUpdateOptions{Updates: map[string]map[string]interface{}{}}
+	for _, user := range items {
+		if !strings.HasPrefix(user.UUID, id) {
+			continue
+		}
+		logger.Debugf("cache user info for uuid %q", user.UUID)
+
+		// If the remote cluster has null timestamps
+		// (e.g., test server with incomplete
+		// fixtures) use dummy timestamps (instead of
+		// the zero time, which causes a Rails API
+		// error "year too big to marshal: 1 UTC").
+		if user.ModifiedAt.IsZero() {
+			user.ModifiedAt = time.Now()
+		}
+		if user.CreatedAt.IsZero() {
+			user.CreatedAt = time.Now()
+		}
+
+		var allFields map[string]interface{}
+		buf, err := json.Marshal(user)
+		if err != nil {
+			return fmt.Errorf("error encoding user record from remote response: %s", err)
+		}
+		err = json.Unmarshal(buf, &allFields)
+		if err != nil {
+			return fmt.Errorf("error transcoding user record from remote response: %s", err)
+		}
+		updates := allFields
+		if len(options.Select) > 0 {
+			updates = map[string]interface{}{}
+			for _, k := range options.Select {
+				if v, ok := allFields[k]; ok && userAttrsCachedFromLoginCluster[k] {
+					updates[k] = v
+				}
+			}
+		} else {
+			for k := range updates {
+				if !userAttrsCachedFromLoginCluster[k] {
+					delete(updates, k)
+				}
+			}
+		}
+		batchOpts.Updates[user.UUID] = updates
+	}
+	if len(batchOpts.Updates) > 0 {
+		ctxRoot := auth.NewContext(ctx, &auth.Credentials{Tokens: []string{conn.cluster.SystemRootToken}})
+		_, err = conn.local.UserBatchUpdate(ctxRoot, batchOpts)
+		if err != nil {
+			return fmt.Errorf("error updating local user records: %s", err)
+		}
+	}
+	return nil
+}
+
+func (conn *Conn) UserList(ctx context.Context, options arvados.ListOptions) (arvados.UserList, error) {
+	if id := conn.cluster.Login.LoginCluster; id != "" && id != conn.cluster.ClusterID && !options.BypassFederation {
+		resp, err := conn.chooseBackend(id).UserList(ctx, options)
+		if err != nil {
+			return resp, err
+		}
+		err = conn.batchUpdateUsers(ctx, options, resp.Items)
+		if err != nil {
+			return arvados.UserList{}, err
+		}
+		return resp, nil
+	}
+	return conn.generated_UserList(ctx, options)
+}
+
+func (conn *Conn) UserCreate(ctx context.Context, options arvados.CreateOptions) (arvados.User, error) {
+	return conn.chooseBackend(options.ClusterID).UserCreate(ctx, options)
+}
+
+func (conn *Conn) UserUpdate(ctx context.Context, options arvados.UpdateOptions) (arvados.User, error) {
+	if options.BypassFederation {
+		return conn.local.UserUpdate(ctx, options)
+	}
+	return conn.chooseBackend(options.UUID).UserUpdate(ctx, options)
+}
+
+func (conn *Conn) UserUpdateUUID(ctx context.Context, options arvados.UpdateUUIDOptions) (arvados.User, error) {
+	return conn.local.UserUpdateUUID(ctx, options)
+}
+
+func (conn *Conn) UserMerge(ctx context.Context, options arvados.UserMergeOptions) (arvados.User, error) {
+	return conn.local.UserMerge(ctx, options)
+}
+
+func (conn *Conn) UserActivate(ctx context.Context, options arvados.UserActivateOptions) (arvados.User, error) {
+	return conn.localOrLoginCluster().UserActivate(ctx, options)
+}
+
+func (conn *Conn) UserSetup(ctx context.Context, options arvados.UserSetupOptions) (map[string]interface{}, error) {
+	upstream := conn.localOrLoginCluster()
+	if upstream != conn.local {
+		// When LoginCluster is in effect, and we're setting
+		// up a remote user, and we want to give that user
+		// access to a local VM, we can't include the VM in
+		// the setup call, because the remote cluster won't
+		// recognize it.
+
+		// Similarly, if we want to create a git repo,
+		// it should be created on the local cluster,
+		// not the remote one.
+
+		upstreamOptions := options
+		upstreamOptions.VMUUID = ""
+		upstreamOptions.RepoName = ""
+
+		ret, err := upstream.UserSetup(ctx, upstreamOptions)
+		if err != nil {
+			return ret, err
+		}
+	}
+
+	return conn.local.UserSetup(ctx, options)
+}
+
+func (conn *Conn) UserUnsetup(ctx context.Context, options arvados.GetOptions) (arvados.User, error) {
+	return conn.localOrLoginCluster().UserUnsetup(ctx, options)
+}
+
+func (conn *Conn) UserGet(ctx context.Context, options arvados.GetOptions) (arvados.User, error) {
+	return conn.chooseBackend(options.UUID).UserGet(ctx, options)
+}
+
+func (conn *Conn) UserGetCurrent(ctx context.Context, options arvados.GetOptions) (arvados.User, error) {
+	return conn.chooseBackend(options.UUID).UserGetCurrent(ctx, options)
+}
+
+func (conn *Conn) UserGetSystem(ctx context.Context, options arvados.GetOptions) (arvados.User, error) {
+	return conn.chooseBackend(options.UUID).UserGetSystem(ctx, options)
+}
+
+func (conn *Conn) UserDelete(ctx context.Context, options arvados.DeleteOptions) (arvados.User, error) {
+	return conn.chooseBackend(options.UUID).UserDelete(ctx, options)
+}
+
+func (conn *Conn) UserBatchUpdate(ctx context.Context, options arvados.UserBatchUpdateOptions) (arvados.UserList, error) {
+	return conn.local.UserBatchUpdate(ctx, options)
+}
+
+func (conn *Conn) UserAuthenticate(ctx context.Context, options arvados.UserAuthenticateOptions) (arvados.APIClientAuthorization, error) {
+	return conn.local.UserAuthenticate(ctx, options)
+}
+
 func (conn *Conn) APIClientAuthorizationCurrent(ctx context.Context, options arvados.GetOptions) (arvados.APIClientAuthorization, error) {
 	return conn.chooseBackend(options.UUID).APIClientAuthorizationCurrent(ctx, options)
 }
 
-type backend interface{ arvados.API }
+type backend interface {
+	arvados.API
+	BaseURL() url.URL
+}
 
 type notFoundError struct{}
 
@@ -301,7 +540,6 @@ func (notFoundError) Error() string   { return "not found" }
 func errStatus(err error) int {
 	if httpErr, ok := err.(interface{ HTTPStatus() int }); ok {
 		return httpErr.HTTPStatus()
-	} else {
-		return http.StatusInternalServerError
 	}
+	return http.StatusInternalServerError
 }