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handler-path-datasource.go
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/
handler-path-datasource.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package views
import (
"context"
"path"
"strings"
"github.com/micro/go-micro/errors"
"go.uber.org/zap"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/proto/tree"
)
func NewPathDataSourceHandler() *PathDataSourceHandler {
bt := &PathDataSourceHandler{}
bt.inputMethod = bt.updateInputBranch
bt.outputMethod = bt.updateOutputNode
return bt
}
// PathDataSourceHandler is an AbstractBranchFilter adding/extracting datasource name from the path.
type PathDataSourceHandler struct {
AbstractBranchFilter
}
func (v *PathDataSourceHandler) updateInputBranch(ctx context.Context, node *tree.Node, identifier string) (context.Context, *tree.Node, error) {
branchInfo, ok := GetBranchInfo(ctx, identifier)
if !ok {
return ctx, node, errors.InternalServerError(VIEWS_LIBRARY_NAME, "Cannot find branch info for node")
}
if branchInfo.Client != nil {
// DS Is already set by a previous middleware, ignore.
return ctx, node, nil
}
out := node.Clone()
if branchInfo.Workspace.UUID == "ROOT" {
if len(strings.Trim(node.Path, "/")) > 0 {
// Get Data Source from first segment, leave tree path unchanged
parts := strings.Split(strings.Trim(node.Path, "/"), "/")
dsName := parts[0]
source, e := v.clientsPool.GetDataSourceInfo(dsName)
if e != nil {
return ctx, node, e
}
log.Logger(ctx).Debug("updateInput", zap.Any("source", source))
if len(parts) > 1 {
dsPath := strings.Join(parts[1:], "/")
out.SetMeta(common.MetaNamespaceDatasourcePath, dsPath)
}
if source.ObjectsBucket == "" {
parts := strings.Split(strings.Trim(node.Path, "/"), "/")
if len(parts) >= 2 {
// Read bucket name from second segment
source = WithBucketName(source, parts[1])
// Remove from datasource_path
out.SetMeta(common.MetaNamespaceDatasourcePath, strings.Join(parts[2:], "/"))
}
}
branchInfo.LoadedSource = source
if source.IsInternal() && node.Uuid == "" {
out.Uuid = path.Base(out.Path)
}
ctx = WithBranchInfo(ctx, identifier, branchInfo)
}
} else if branchInfo.Root != nil {
wsRoot := branchInfo.Root
dsName := wsRoot.GetStringMeta(common.MetaNamespaceDatasourceName)
source, err := v.clientsPool.GetDataSourceInfo(dsName)
if err != nil {
log.Logger(ctx).Error("Cannot find DataSourceInfo for "+dsName, zap.Error(err))
return nil, out, err
}
if source.ObjectsBucket == "" {
parts := strings.Split(strings.Trim(node.Path, "/"), "/")
if len(parts) >= 2 {
// Read bucket name from second segment
source = WithBucketName(source, parts[1])
// Remove from datasource_path
out.SetMeta(common.MetaNamespaceDatasourcePath, strings.Join(parts[2:], "/"))
}
}
branchInfo.LoadedSource = source
ctx = WithBranchInfo(ctx, identifier, branchInfo)
} else {
return ctx, node, errors.InternalServerError(VIEWS_LIBRARY_NAME, "Missing Root in context")
}
return ctx, out, nil
}
func (v *PathDataSourceHandler) updateOutputNode(ctx context.Context, node *tree.Node, identifier string) (context.Context, *tree.Node, error) {
// Reload DS info - may be necessary for outputFiltering case
if branchInfo, ok := GetBranchInfo(ctx, identifier); (!ok || branchInfo.Name == "") && node.GetStringMeta(common.MetaNamespaceDatasourceName) != "" {
dsName := node.GetStringMeta(common.MetaNamespaceDatasourceName)
if source, err := v.clientsPool.GetDataSourceInfo(dsName); err == nil {
branchInfo.LoadedSource = source
ctx = WithBranchInfo(ctx, identifier, branchInfo)
}
}
if branchInfo, ok := GetBranchInfo(ctx, identifier); ok && branchInfo.LoadedSource.Name != "" && branchInfo.LoadedSource.ObjectsBucket == "" {
sLen := len(strings.Split(strings.Trim(node.Path, "/"), "/"))
if sLen == 1 {
// The root of the datasource is at the bucket level, set flag readonly
n := node.Clone()
n.SetMeta(common.MetaFlagLevelReadonly, "true")
return ctx, n, nil
} else if sLen == 2 {
// Set a specific flag that can adapt the display
n := node.Clone()
n.SetMeta(common.MetaFlagBucket, "true")
return ctx, n, nil
}
}
return ctx, node, nil
}