77 lines
2 KiB
Go
77 lines
2 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package plugin
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import (
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"context"
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"sync/atomic"
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"google.golang.org/grpc"
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log "github.com/hashicorp/go-hclog"
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"github.com/hashicorp/go-plugin"
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"github.com/hashicorp/vault/sdk/helper/pluginutil"
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"github.com/hashicorp/vault/sdk/logical"
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"github.com/hashicorp/vault/sdk/plugin/pb"
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)
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var (
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_ plugin.Plugin = (*GRPCBackendPlugin)(nil)
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_ plugin.GRPCPlugin = (*GRPCBackendPlugin)(nil)
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)
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// GRPCBackendPlugin is the plugin.Plugin implementation that only supports GRPC
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// transport
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type GRPCBackendPlugin struct {
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Factory logical.Factory
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MetadataMode bool
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Logger log.Logger
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MultiplexingSupport bool
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// Embeding this will disable the netRPC protocol
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plugin.NetRPCUnsupportedPlugin
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}
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func (b GRPCBackendPlugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
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server := backendGRPCPluginServer{
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broker: broker,
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factory: b.Factory,
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instances: make(map[string]backendInstance),
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// We pass the logger down into the backend so go-plugin will
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// forward logs for us.
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logger: b.Logger,
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}
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if b.MultiplexingSupport {
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// Multiplexing is enabled for this plugin, register the server so we
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// can tell the client in Vault.
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pluginutil.RegisterPluginMultiplexingServer(s, pluginutil.PluginMultiplexingServerImpl{
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Supported: true,
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})
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server.multiplexingSupport = true
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}
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pb.RegisterBackendServer(s, &server)
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logical.RegisterPluginVersionServer(s, &server)
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return nil
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}
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func (b *GRPCBackendPlugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
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ret := &backendGRPCPluginClient{
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client: pb.NewBackendClient(c),
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versionClient: logical.NewPluginVersionClient(c),
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broker: broker,
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cleanupCh: make(chan struct{}),
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doneCtx: ctx,
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metadataMode: b.MetadataMode,
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}
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// Create the value and set the type
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ret.server = new(atomic.Value)
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ret.server.Store((*grpc.Server)(nil))
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return ret, nil
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}
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