sdk/go/arvados/fs_project.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: Apache-2.0
   4
   5 package arvados
   6
   7 import (
   8         "log"
   9         "strings"
  10 )
  11
  12 func (fs *customFileSystem) defaultUUID(uuid string) (string, error) {
  13         if uuid != "" {
  14                 return uuid, nil
  15         }
  16         var resp User
  17         err := fs.RequestAndDecode(&resp, "GET", "arvados/v1/users/current", nil, nil)
  18         if err != nil {
  19                 return "", err
  20         }
  21         return resp.UUID, nil
  22 }
  23
  24 // loadOneChild loads only the named child, if it exists.
  25 func (fs *customFileSystem) projectsLoadOne(parent inode, uuid, name string) (inode, error) {
  26         uuid, err := fs.defaultUUID(uuid)
  27         if err != nil {
  28                 return nil, err
  29         }
  30
  31         var contents CollectionList
  32         for _, subst := range []string{"/", fs.forwardSlashNameSubstitution} {
  33                 contents = CollectionList{}
  34                 err = fs.RequestAndDecode(&contents, "GET", "arvados/v1/groups/"+uuid+"/contents", nil, ResourceListParams{
  35                         Count: "none",
  36                         Filters: []Filter{
  37                                 {"name", "=", strings.Replace(name, subst, "/", -1)},
  38                                 {"uuid", "is_a", []string{"arvados#collection", "arvados#group"}},
  39                                 {"groups.group_class", "=", "project"},
  40                         },
  41                         Select: []string{"uuid", "name", "modified_at", "properties"},
  42                 })
  43                 if err != nil {
  44                         return nil, err
  45                 }
  46                 if len(contents.Items) > 0 || fs.forwardSlashNameSubstitution == "/" || fs.forwardSlashNameSubstitution == "" || !strings.Contains(name, fs.forwardSlashNameSubstitution) {
  47                         break
  48                 }
  49                 // If the requested name contains the configured "/"
  50                 // replacement string and didn't match a
  51                 // project/collection exactly, we'll try again with
  52                 // "/" in its place, so a lookup of a munged name
  53                 // works regardless of whether the directory listing
  54                 // has been populated with escaped names.
  55                 //
  56                 // Note this doesn't handle items whose names contain
  57                 // both "/" and the substitution string.
  58         }
  59         if len(contents.Items) == 0 {
  60                 return nil, nil
  61         }
  62         coll := contents.Items[0]
  63
  64         if strings.Contains(coll.UUID, "-j7d0g-") {
  65                 // Group item was loaded into a Collection var -- but
  66                 // we only need the Name and UUID anyway, so it's OK.
  67                 return fs.newProjectNode(parent, coll.Name, coll.UUID, coll.Properties), nil
  68         } else if strings.Contains(coll.UUID, "-4zz18-") {
  69                 return deferredCollectionFS(fs, parent, coll), nil
  70         } else {
  71                 log.Printf("group contents: unrecognized UUID in response: %q", coll.UUID)
  72                 return nil, ErrInvalidArgument
  73         }
  74 }
  75
  76 func (fs *customFileSystem) projectsLoadAll(parent inode, uuid string) ([]inode, error) {
  77         uuid, err := fs.defaultUUID(uuid)
  78         if err != nil {
  79                 return nil, err
  80         }
  81
  82         var inodes []inode
  83
  84         // When #17424 is resolved, remove the outer loop here and use
  85         // []string{"arvados#collection", "arvados#group"} directly as the uuid
  86         // filter.
  87         for _, class := range []string{"arvados#collection", "arvados#group"} {
  88                 // Note: the "filters" slice's backing array might be reused
  89                 // by append(filters,...) below. This isn't goroutine safe,
  90                 // but all accesses are in the same goroutine, so it's OK.
  91                 filters := []Filter{
  92                         {"uuid", "is_a", class},
  93                 }
  94                 if class == "arvados#group" {
  95                         filters = append(filters, Filter{"group_class", "=", "project"})
  96                 }
  97
  98                 params := ResourceListParams{
  99                         Count:   "none",
 100                         Filters: filters,
 101                         Order:   "uuid",
 102                         Select:  []string{"uuid", "name", "modified_at", "properties"},
 103                 }
 104
 105                 for {
 106                         // The groups content endpoint returns Collection and Group (project)
 107                         // objects. This function only accesses the UUID and Name field. Both
 108                         // collections and groups have those fields, so it is easier to just treat
 109                         // the ObjectList that comes back as a CollectionList.
 110                         var resp CollectionList
 111                         err = fs.RequestAndDecode(&resp, "GET", "arvados/v1/groups/"+uuid+"/contents", nil, params)
 112                         if err != nil {
 113                                 return nil, err
 114                         }
 115                         if len(resp.Items) == 0 {
 116                                 break
 117                         }
 118                         for _, i := range resp.Items {
 119                                 if fs.forwardSlashNameSubstitution != "" {
 120                                         i.Name = strings.Replace(i.Name, "/", fs.forwardSlashNameSubstitution, -1)
 121                                 }
 122                                 if !permittedName(i.Name) {
 123                                         continue
 124                                 }
 125                                 if strings.Contains(i.UUID, "-j7d0g-") {
 126                                         inodes = append(inodes, fs.newProjectNode(parent, i.Name, i.UUID, i.Properties))
 127                                 } else if strings.Contains(i.UUID, "-4zz18-") {
 128                                         inodes = append(inodes, deferredCollectionFS(fs, parent, i))
 129                                 } else {
 130                                         log.Printf("group contents: unrecognized UUID in response: %q", i.UUID)
 131                                         return nil, ErrInvalidArgument
 132                                 }
 133                         }
 134                         params.Filters = append(filters, Filter{"uuid", ">", resp.Items[len(resp.Items)-1].UUID})
 135                 }
 136         }
 137         return inodes, nil
 138 }