v.io: v.io/v23/namespace Index | Files

package namespace

import "v.io/v23/namespace"

Package namespace defines an interface for resolving and managing names.


Package Files


type T Uses

type T interface {
    // Mount the server object address under the object name, expiring after
    // the ttl. ttl of zero implies an implementation-specific high value
    // (essentially, forever).
    Mount(ctx *context.T, name, server string, ttl time.Duration, opts ...naming.NamespaceOpt) error

    // Unmount the server object address from the object name, or if server
    // is empty, unmount all server OAs from the object name.
    Unmount(ctx *context.T, name, server string, opts ...naming.NamespaceOpt) error

    // Delete the name from a mount table.  If the name has any children in its mount table,
    // it (and its chidren) will only be removed if deleteSubtree is true.
    Delete(ctx *context.T, name string, deleteSubtree bool, opts ...naming.NamespaceOpt) error

    // Resolve the object name into its mounted servers.
    Resolve(ctx *context.T, name string, opts ...naming.NamespaceOpt) (entry *naming.MountEntry, err error)

    // ResolveToMountTable resolves the object name into the mounttables
    // directly responsible for the name.
    ResolveToMountTable(ctx *context.T, name string, opts ...naming.NamespaceOpt) (entry *naming.MountEntry, err error)

    // ShallowResolve resolves the object name into its mounted servers.  It is the same
    // as Resolve except when mounttables are stacked below the same mount point.  For example,
    // if service D is mounted onto /MTA/a/b and /MTA/a/b is mounted onto /MTB/x/y then
    // Resolve(/MTB/x/y) will return a pointer to D while ShallowResolve(/MTB/x/y) will
    // return a pointer to /MTA/a/b.
    ShallowResolve(ctx *context.T, name string, opts ...naming.NamespaceOpt) (entry *naming.MountEntry, err error)

    // FlushCacheEntry flushes resolution information cached for the name.  If
    // anything was flushed it returns true.
    FlushCacheEntry(ctx *context.T, name string) bool

    // CacheCtl sets controls and returns the current control values.
    CacheCtl(ctls ...naming.CacheCtl) []naming.CacheCtl

    // Glob returns MountEntry's whose name matches the pattern and GlobError's
    // for any piece of the space that can't be traversed.
    // Two special patterns:
    //   prefix/... means all names below prefix.
    //   prefix/*** is like prefix/... but doesn't traverse into non-mounttable servers.
    // The returned channel must be drained until it is closed, otherwise a goroutine
    // (that publishes to the channel) may be leaked.
    // Example:
    //	rc, err := ns.Glob(ctx, pattern)
    //	if err != nil {
    //		boom(t, "Glob(%s): %s", pattern, err)
    //	}
    //	for s := range rc {
    //		switch v := s.(type) {
    //		case *naming.MountEntry:
    //			fmt.Printf("%s: %v\n", v.Name, v.Servers)
    //		case *naming.GlobError:
    //			fmt.Fprintf(stderr, "%s can't be traversed: %s\n", v.Name, v.Error)
    //		}
    //	}
    Glob(ctx *context.T, pattern string, opts ...naming.NamespaceOpt) (<-chan naming.GlobReply, error)

    // SetRoots sets the roots that the local Namespace is
    // relative to. All relative names passed to the methods above
    // will be interpreted as relative to these roots. The roots
    // will be tried in the order that they are specified in the parameter
    // list for SetRoots. Calling SetRoots with no arguments will clear the
    // currently configured set of roots.
    SetRoots(roots ...string) error

    // Roots returns the currently configured roots. An empty slice is
    // returned if no roots are configured.
    Roots() []string

    // SetPermissions sets the Permissions in a node in a mount table.
    // If the caller tries to Set a perms that removes them from Admin, the
    // caller's original Admin blessings will be retained.
    SetPermissions(ctx *context.T, name string, perms access.Permissions, version string, opts ...naming.NamespaceOpt) error

    // GetPermissions returns the Permissions in a node in a mount table.
    GetPermissions(ctx *context.T, name string, opts ...naming.NamespaceOpt) (perms access.Permissions, version string, err error)

T is the interface for namespace operations; it is the client side library for the MountTable service

Package namespace imports 4 packages (graph) and is imported by 26 packages. Updated 2020-06-08. Refresh now. Tools for package owners.