refact(plugin): Move host loopback plugin into internal/plugin/loopback
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Louis Ruch authored and 
Timothy Messier committed
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@@ -0,0 +1,274 @@
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// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package loopback
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import (
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"context"
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"fmt"
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"github.com/hashicorp/boundary/internal/errors"
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plgpb "github.com/hashicorp/boundary/sdk/pbs/plugin"
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"github.com/mitchellh/mapstructure"
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)
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const loopbackPluginHostInfoAttrField = "host_info"
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var (
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_ plgpb.HostPluginServiceServer = (*LoopbackPlugin)(nil)
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_ plgpb.HostPluginServiceServer = (*TestPluginServer)(nil)
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)
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// TestPluginServer provides a host plugin service server where each method can be overwritten for tests.
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type TestPluginServer struct {
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NormalizeCatalogDataFn func(context.Context, *plgpb.NormalizeCatalogDataRequest) (*plgpb.NormalizeCatalogDataResponse, error)
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OnCreateCatalogFn func(context.Context, *plgpb.OnCreateCatalogRequest) (*plgpb.OnCreateCatalogResponse, error)
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OnUpdateCatalogFn func(context.Context, *plgpb.OnUpdateCatalogRequest) (*plgpb.OnUpdateCatalogResponse, error)
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OnDeleteCatalogFn func(context.Context, *plgpb.OnDeleteCatalogRequest) (*plgpb.OnDeleteCatalogResponse, error)
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NormalizeSetDataFn func(context.Context, *plgpb.NormalizeSetDataRequest) (*plgpb.NormalizeSetDataResponse, error)
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OnCreateSetFn func(context.Context, *plgpb.OnCreateSetRequest) (*plgpb.OnCreateSetResponse, error)
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OnUpdateSetFn func(context.Context, *plgpb.OnUpdateSetRequest) (*plgpb.OnUpdateSetResponse, error)
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OnDeleteSetFn func(context.Context, *plgpb.OnDeleteSetRequest) (*plgpb.OnDeleteSetResponse, error)
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ListHostsFn func(context.Context, *plgpb.ListHostsRequest) (*plgpb.ListHostsResponse, error)
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plgpb.UnimplementedHostPluginServiceServer
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}
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func (t TestPluginServer) NormalizeCatalogData(ctx context.Context, req *plgpb.NormalizeCatalogDataRequest) (*plgpb.NormalizeCatalogDataResponse, error) {
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if t.NormalizeCatalogDataFn == nil {
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return t.UnimplementedHostPluginServiceServer.NormalizeCatalogData(ctx, req)
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}
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return t.NormalizeCatalogDataFn(ctx, req)
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}
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func (t TestPluginServer) OnCreateCatalog(ctx context.Context, req *plgpb.OnCreateCatalogRequest) (*plgpb.OnCreateCatalogResponse, error) {
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if t.OnCreateCatalogFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnCreateCatalog(ctx, req)
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}
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return t.OnCreateCatalogFn(ctx, req)
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}
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func (t TestPluginServer) OnUpdateCatalog(ctx context.Context, req *plgpb.OnUpdateCatalogRequest) (*plgpb.OnUpdateCatalogResponse, error) {
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if t.OnUpdateCatalogFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnUpdateCatalog(ctx, req)
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}
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return t.OnUpdateCatalogFn(ctx, req)
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}
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func (t TestPluginServer) OnDeleteCatalog(ctx context.Context, req *plgpb.OnDeleteCatalogRequest) (*plgpb.OnDeleteCatalogResponse, error) {
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if t.OnDeleteCatalogFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnDeleteCatalog(ctx, req)
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}
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return t.OnDeleteCatalogFn(ctx, req)
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}
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func (t TestPluginServer) NormalizeSetData(ctx context.Context, req *plgpb.NormalizeSetDataRequest) (*plgpb.NormalizeSetDataResponse, error) {
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if t.NormalizeSetDataFn == nil {
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return t.UnimplementedHostPluginServiceServer.NormalizeSetData(ctx, req)
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}
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return t.NormalizeSetDataFn(ctx, req)
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}
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func (t TestPluginServer) OnCreateSet(ctx context.Context, req *plgpb.OnCreateSetRequest) (*plgpb.OnCreateSetResponse, error) {
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if t.OnCreateSetFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnCreateSet(ctx, req)
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}
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return t.OnCreateSetFn(ctx, req)
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}
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func (t TestPluginServer) OnUpdateSet(ctx context.Context, req *plgpb.OnUpdateSetRequest) (*plgpb.OnUpdateSetResponse, error) {
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if t.OnUpdateSetFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnUpdateSet(ctx, req)
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}
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return t.OnUpdateSetFn(ctx, req)
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}
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func (t TestPluginServer) OnDeleteSet(ctx context.Context, req *plgpb.OnDeleteSetRequest) (*plgpb.OnDeleteSetResponse, error) {
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if t.OnDeleteSetFn == nil {
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return t.UnimplementedHostPluginServiceServer.OnDeleteSet(ctx, req)
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}
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return t.OnDeleteSetFn(ctx, req)
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}
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func (t TestPluginServer) ListHosts(ctx context.Context, req *plgpb.ListHostsRequest) (*plgpb.ListHostsResponse, error) {
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if t.ListHostsFn == nil {
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return t.UnimplementedHostPluginServiceServer.ListHosts(ctx, req)
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}
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return t.ListHostsFn(ctx, req)
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}
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// LoopbackPlugin provides a host plugin with functionality useful for certain
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// kinds of testing. It is not (currently) thread-safe.
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//
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// Over time, if useful, it can be enhanced to do things like handle multiple
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// hosts per set.
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type LoopbackPlugin struct {
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*TestPluginServer
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hostMap map[string][]*loopbackPluginHostInfo
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}
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type loopbackPluginHostInfo struct {
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ExternalId string `mapstructure:"external_id"`
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IpAddresses []string `mapstructure:"ip_addresses"`
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DnsNames []string `mapstructure:"dns_names"`
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}
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// NewLoopbackPlugin returns a new loopback plugin
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func NewLoopbackPlugin() (*LoopbackPlugin, error) {
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ret := &LoopbackPlugin{
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TestPluginServer: new(TestPluginServer),
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hostMap: make(map[string][]*loopbackPluginHostInfo),
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}
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ret.OnCreateCatalogFn = ret.onCreateCatalog
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ret.OnUpdateCatalogFn = ret.onUpdateCatalog
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ret.OnCreateSetFn = ret.onCreateSet
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ret.OnUpdateSetFn = ret.onUpdateSet
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ret.OnDeleteSetFn = ret.onDeleteSet
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ret.ListHostsFn = ret.listHosts
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return ret, nil
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}
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func (l *LoopbackPlugin) onCreateCatalog(ctx context.Context, req *plgpb.OnCreateCatalogRequest) (*plgpb.OnCreateCatalogResponse, error) {
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const op = "loopback.(loopbackPlugin).onCreateCatalog"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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if cat := req.GetCatalog(); cat != nil {
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if secrets := cat.GetSecrets(); secrets != nil {
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return &plgpb.OnCreateCatalogResponse{
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Persisted: &plgpb.HostCatalogPersisted{
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Secrets: secrets,
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},
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}, nil
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}
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}
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return &plgpb.OnCreateCatalogResponse{}, nil
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}
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func (l *LoopbackPlugin) onUpdateCatalog(ctx context.Context, req *plgpb.OnUpdateCatalogRequest) (*plgpb.OnUpdateCatalogResponse, error) {
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const op = "loopback.(loopbackPlugin).onUpdateCatalog"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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if cat := req.GetNewCatalog(); cat != nil {
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if secrets := cat.GetSecrets(); secrets != nil {
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return &plgpb.OnUpdateCatalogResponse{
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Persisted: &plgpb.HostCatalogPersisted{
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Secrets: secrets,
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},
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}, nil
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}
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}
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return &plgpb.OnUpdateCatalogResponse{}, nil
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}
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func (l *LoopbackPlugin) onCreateSet(ctx context.Context, req *plgpb.OnCreateSetRequest) (*plgpb.OnCreateSetResponse, error) {
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const op = "loopback.(loopbackPlugin).onCreateSet"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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set := req.GetSet()
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if set == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "set is nil")
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}
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if attrs := set.GetAttributes(); attrs != nil {
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attrsMap := attrs.AsMap()
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if field := attrsMap[loopbackPluginHostInfoAttrField]; field != nil {
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switch t := field.(type) {
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case []any:
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for _, h := range t {
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hostInfo := new(loopbackPluginHostInfo)
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if err := mapstructure.Decode(h, hostInfo); err != nil {
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return nil, errors.Wrap(ctx, err, op)
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}
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l.hostMap[set.GetId()] = append(l.hostMap[set.GetId()], hostInfo)
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}
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case map[string]any:
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hostInfo := new(loopbackPluginHostInfo)
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if err := mapstructure.Decode(t, hostInfo); err != nil {
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return nil, errors.Wrap(ctx, err, op)
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}
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l.hostMap[set.GetId()] = append(l.hostMap[set.GetId()], hostInfo)
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default:
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return nil, errors.New(ctx, errors.InvalidParameter, op, fmt.Sprintf("unknown host info type %T", t))
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}
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}
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}
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return &plgpb.OnCreateSetResponse{}, nil
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}
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func (l *LoopbackPlugin) onUpdateSet(ctx context.Context, req *plgpb.OnUpdateSetRequest) (*plgpb.OnUpdateSetResponse, error) {
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const op = "loopback.(loopbackPlugin).onCreateSet"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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set := req.GetNewSet()
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if set == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "set is nil")
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}
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var hosts []*loopbackPluginHostInfo
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if attrs := set.GetAttributes(); attrs != nil {
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attrsMap := attrs.AsMap()
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if field := attrsMap[loopbackPluginHostInfoAttrField]; field != nil {
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switch t := field.(type) {
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case []any:
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for _, h := range t {
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hostInfo := new(loopbackPluginHostInfo)
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if err := mapstructure.Decode(h, hostInfo); err != nil {
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return nil, errors.Wrap(ctx, err, op)
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}
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hosts = append(hosts, hostInfo)
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}
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case map[string]any:
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hostInfo := new(loopbackPluginHostInfo)
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if err := mapstructure.Decode(t, hostInfo); err != nil {
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return nil, errors.Wrap(ctx, err, op)
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}
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hosts = append(hosts, hostInfo)
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default:
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return nil, errors.New(ctx, errors.InvalidParameter, op, fmt.Sprintf("unknown host info type %T", t))
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}
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}
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}
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if hosts != nil {
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l.hostMap[set.GetId()] = hosts
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}
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return &plgpb.OnUpdateSetResponse{}, nil
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}
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func (l *LoopbackPlugin) onDeleteSet(ctx context.Context, req *plgpb.OnDeleteSetRequest) (*plgpb.OnDeleteSetResponse, error) {
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const op = "loopback.(loopbackPlugin).onDeleteSet"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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set := req.GetSet()
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if set == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "set is nil")
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}
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delete(l.hostMap, set.GetId())
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return nil, nil
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}
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func (l *LoopbackPlugin) listHosts(ctx context.Context, req *plgpb.ListHostsRequest) (*plgpb.ListHostsResponse, error) {
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const op = "loopback.(loopbackPlugin).listHosts"
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if req == nil {
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return nil, errors.New(ctx, errors.InvalidParameter, op, "req is nil")
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}
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resp := new(plgpb.ListHostsResponse)
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for _, set := range req.GetSets() {
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hostInfos := l.hostMap[set.GetId()]
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if len(hostInfos) == 0 {
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continue
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}
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for _, host := range hostInfos {
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resp.Hosts = append(resp.Hosts, &plgpb.ListHostsResponseHost{
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SetIds: []string{set.GetId()},
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ExternalId: host.ExternalId,
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IpAddresses: host.IpAddresses,
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DnsNames: host.DnsNames,
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})
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}
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}
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return resp, nil
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}
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