open-vault/vault/plugin_reload.go

126 lines
3.3 KiB
Go

package vault
import (
"fmt"
"strings"
multierror "github.com/hashicorp/go-multierror"
"github.com/hashicorp/vault/logical"
)
// reloadPluginMounts reloads provided mounts, regardless of
// plugin name, as long as the backend type is plugin.
func (c *Core) reloadMatchingPluginMounts(mounts []string) error {
c.mountsLock.Lock()
defer c.mountsLock.Unlock()
var errors error
for _, mount := range mounts {
entry := c.router.MatchingMountEntry(mount)
if entry == nil {
errors = multierror.Append(errors, fmt.Errorf("cannot fetch mount entry on %s", mount))
continue
// return fmt.Errorf("cannot fetch mount entry on %s", mount)
}
var isAuth bool
fullPath := c.router.MatchingMount(mount)
if strings.HasPrefix(fullPath, credentialRoutePrefix) {
isAuth = true
}
if entry.Type == "plugin" {
err := c.reloadPluginCommon(entry, isAuth)
if err != nil {
errors = multierror.Append(errors, fmt.Errorf("cannot reload plugin on %s: %v", mount, err))
continue
}
c.logger.Info("core: successfully reloaded plugin", "plugin", entry.Config.PluginName, "path", entry.Path)
}
}
return errors
}
// reloadPlugin reloads all mounted backends that are of
// plugin pluginName (name of the plugin as registered in
// the plugin catalog).
func (c *Core) reloadMatchingPlugin(pluginName string) error {
c.mountsLock.Lock()
defer c.mountsLock.Unlock()
// Filter mount entries that only matches the plugin name
for _, entry := range c.mounts.Entries {
if entry.Config.PluginName == pluginName && entry.Type == "plugin" {
err := c.reloadPluginCommon(entry, false)
if err != nil {
return err
}
c.logger.Info("core: successfully reloaded plugin", "plugin", pluginName, "path", entry.Path)
}
}
// Filter auth mount entries that ony matches the plugin name
for _, entry := range c.auth.Entries {
if entry.Config.PluginName == pluginName && entry.Type == "plugin" {
err := c.reloadPluginCommon(entry, true)
if err != nil {
return err
}
c.logger.Info("core: successfully reloaded plugin", "plugin", pluginName, "path", entry.Path)
}
}
return nil
}
// reloadPluginCommon is a generic method to reload a backend provided a
// MountEntry. entry.Type should be checked by the caller to ensure that
// it's a "plugin" type.
func (c *Core) reloadPluginCommon(entry *MountEntry, isAuth bool) error {
path := entry.Path
// Fast-path out if the backend doesn't exist
raw, ok := c.router.root.Get(path)
if !ok {
return nil
}
// Call backend's Cleanup routine
re := raw.(*routeEntry)
re.backend.Cleanup()
view := re.storageView
sysView := c.mountEntrySysView(entry)
conf := make(map[string]string)
if entry.Config.PluginName != "" {
conf["plugin_name"] = entry.Config.PluginName
}
var backend logical.Backend
var err error
if !isAuth {
// Dispense a new backend
backend, err = c.newLogicalBackend(entry.Type, sysView, view, conf)
} else {
backend, err = c.newCredentialBackend(entry.Type, sysView, view, conf)
}
if err != nil {
return err
}
if backend == nil {
return fmt.Errorf("nil backend of type %q returned from creation function", entry.Type)
}
// Call initialize; this takes care of init tasks that must be run after
// the ignore paths are collected.
if err := backend.Initialize(); err != nil {
return err
}
// Set the backend back
re.backend = backend
return nil
}