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327 lines
10 KiB
327 lines
10 KiB
// Copyright 2019 HAProxy Technologies
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package handlers
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import (
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"fmt"
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"github.com/go-openapi/runtime/middleware"
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client_native "github.com/haproxytech/client-native/v6"
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"github.com/haproxytech/client-native/v6/models"
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"github.com/haproxytech/dataplaneapi/haproxy"
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"github.com/haproxytech/dataplaneapi/log"
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"github.com/haproxytech/dataplaneapi/misc"
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"github.com/haproxytech/dataplaneapi/operations/server"
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)
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// CreateServerHandlerImpl implementation of the CreateServerHandler interface using client-native client
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type CreateServerHandlerImpl struct {
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Client client_native.HAProxyClient
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ReloadAgent haproxy.IReloadAgent
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}
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// DeleteServerHandlerImpl implementation of the DeleteServerHandler interface using client-native client
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type DeleteServerHandlerImpl struct {
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Client client_native.HAProxyClient
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ReloadAgent haproxy.IReloadAgent
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}
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// GetServerHandlerImpl implementation of the GetServerHandler interface using client-native client
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type GetServerHandlerImpl struct {
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Client client_native.HAProxyClient
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}
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// GetServersHandlerImpl implementation of the GetServersHandler interface using client-native client
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type GetServersHandlerImpl struct {
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Client client_native.HAProxyClient
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}
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// ReplaceServerHandlerImpl implementation of the ReplaceServerHandler interface using client-native client
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type ReplaceServerHandlerImpl struct {
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Client client_native.HAProxyClient
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ReloadAgent haproxy.IReloadAgent
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}
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func serverTypeParams(backend *string, parentType *string, parentName *string) (pType string, pName string, err error) {
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if backend != nil && *backend != "" {
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return "backend", *backend, nil
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}
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if parentType == nil || *parentType == "" {
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return "", "", fmt.Errorf("parentType empty")
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}
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if parentName == nil || *parentName == "" {
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return "", "", fmt.Errorf("parentName empty")
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}
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return *parentType, *parentName, nil
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}
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// Handle executing the request and returning a response
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func (h *CreateServerHandlerImpl) Handle(params server.CreateServerParams, principal interface{}) middleware.Responder {
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t := ""
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v := int64(0)
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if params.TransactionID != nil {
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t = *params.TransactionID
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}
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if params.Version != nil {
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v = *params.Version
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}
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if t != "" && *params.ForceReload {
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msg := "Both force_reload and transaction specified, specify only one"
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c := misc.ErrHTTPBadRequest
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e := &models.Error{
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Message: &msg,
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Code: &c,
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}
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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configuration, err := h.Client.Configuration()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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pType, pName, err := serverTypeParams(params.Backend, params.ParentType, params.ParentName)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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err = configuration.CreateServer(pType, pName, params.Data, t, v)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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// Try to create the new server dynamically. This is only possible if no `default_server`
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// was defined in the current backend or in the `defaults` section.
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useRuntime := false
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var ras *models.RuntimeAddServer
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_, defaults, err := configuration.GetDefaultsConfiguration(t)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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_, backend, err := configuration.GetBackend(pName, t)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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runtime, err := h.Client.Runtime()
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if err == nil && defaults.DefaultServer == nil && backend.DefaultServer == nil {
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// Also make sure the server attributes are supported by the runtime API.
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err = misc.ConvertStruct(params.Data, ras)
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useRuntime = err == nil
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}
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if params.TransactionID == nil {
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if *params.ForceReload {
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err = h.ReloadAgent.ForceReload()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewCreateServerDefault(int(*e.Code)).WithPayload(e)
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}
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return server.NewCreateServerCreated().WithPayload(params.Data)
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}
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if useRuntime {
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err = runtime.AddServer(pName, params.Data.Name, SerializeRuntimeAddServer(ras))
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if err == nil {
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// No need to reload.
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return server.NewCreateServerCreated().WithPayload(params.Data)
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}
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log.Warning("failed to add server through runtime:", err)
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}
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rID := h.ReloadAgent.Reload()
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return server.NewCreateServerAccepted().WithReloadID(rID).WithPayload(params.Data)
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}
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return server.NewCreateServerAccepted().WithPayload(params.Data)
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}
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// Handle executing the request and returning a response
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func (h *DeleteServerHandlerImpl) Handle(params server.DeleteServerParams, principal interface{}) middleware.Responder {
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t := ""
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v := int64(0)
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if params.TransactionID != nil {
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t = *params.TransactionID
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}
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if params.Version != nil {
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v = *params.Version
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}
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if t != "" && *params.ForceReload {
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msg := "Both force_reload and transaction specified, specify only one"
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c := misc.ErrHTTPBadRequest
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e := &models.Error{
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Message: &msg,
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Code: &c,
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}
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return server.NewDeleteServerDefault(int(*e.Code)).WithPayload(e)
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}
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configuration, err := h.Client.Configuration()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewDeleteServerDefault(int(*e.Code)).WithPayload(e)
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}
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pType, pName, err := serverTypeParams(params.Backend, params.ParentType, params.ParentName)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewDeleteServerDefault(int(*e.Code)).WithPayload(e)
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}
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err = configuration.DeleteServer(params.Name, pType, pName, t, v)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewDeleteServerDefault(int(*e.Code)).WithPayload(e)
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}
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if params.TransactionID == nil {
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if *params.ForceReload {
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err := h.ReloadAgent.ForceReload()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewDeleteServerDefault(int(*e.Code)).WithPayload(e)
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}
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return server.NewDeleteServerNoContent()
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}
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rID := h.ReloadAgent.Reload()
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return server.NewDeleteServerAccepted().WithReloadID(rID)
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}
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return server.NewDeleteServerAccepted()
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}
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// Handle executing the request and returning a response
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func (h *GetServerHandlerImpl) Handle(params server.GetServerParams, principal interface{}) middleware.Responder {
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t := ""
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if params.TransactionID != nil {
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t = *params.TransactionID
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}
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configuration, err := h.Client.Configuration()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewGetRuntimeServerDefault(int(*e.Code)).WithPayload(e)
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}
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pType, pName, err := serverTypeParams(params.Backend, params.ParentType, params.ParentName)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewGetRuntimeServerDefault(int(*e.Code)).WithPayload(e)
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}
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v, srv, err := configuration.GetServer(params.Name, pType, pName, t)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewGetServerDefault(int(*e.Code)).WithPayload(e)
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}
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return server.NewGetServerOK().WithPayload(&server.GetServerOKBody{Version: v, Data: srv})
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}
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// Handle executing the request and returning a response
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func (h *GetServersHandlerImpl) Handle(params server.GetServersParams, principal interface{}) middleware.Responder {
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t := ""
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if params.TransactionID != nil {
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t = *params.TransactionID
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}
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configuration, err := h.Client.Configuration()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewGetRuntimeServersDefault(int(*e.Code)).WithPayload(e)
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}
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pType, pName, err := serverTypeParams(params.Backend, params.ParentType, params.ParentName)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewGetRuntimeServersDefault(int(*e.Code)).WithPayload(e)
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}
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v, srvs, err := configuration.GetServers(pType, pName, t)
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if err != nil {
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e := misc.HandleContainerGetError(err)
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if *e.Code == misc.ErrHTTPOk {
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return server.NewGetServersOK().WithPayload(&server.GetServersOKBody{Version: v, Data: models.Servers{}})
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}
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return server.NewGetServersDefault(int(*e.Code)).WithPayload(e)
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}
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return server.NewGetServersOK().WithPayload(&server.GetServersOKBody{Version: v, Data: srvs})
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}
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// Handle executing the request and returning a response
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func (h *ReplaceServerHandlerImpl) Handle(params server.ReplaceServerParams, principal interface{}) middleware.Responder {
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t := ""
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v := int64(0)
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if params.TransactionID != nil {
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t = *params.TransactionID
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}
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if params.Version != nil {
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v = *params.Version
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}
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if t != "" && *params.ForceReload {
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msg := "Both force_reload and transaction specified, specify only one"
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c := misc.ErrHTTPBadRequest
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e := &models.Error{
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Message: &msg,
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Code: &c,
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}
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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configuration, err := h.Client.Configuration()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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pType, pName, err := serverTypeParams(params.Backend, params.ParentType, params.ParentName)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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_, ondisk, err := configuration.GetServer(params.Name, pType, pName, t)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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err = configuration.EditServer(params.Name, pType, pName, params.Data, t, v)
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if err != nil {
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e := misc.HandleError(err)
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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if params.TransactionID == nil {
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reload := changeThroughRuntimeAPI(*params.Data, *ondisk, pType, "", h.Client)
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if reload {
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if *params.ForceReload {
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err := h.ReloadAgent.ForceReload()
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if err != nil {
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e := misc.HandleError(err)
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return server.NewReplaceServerDefault(int(*e.Code)).WithPayload(e)
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}
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return server.NewReplaceServerOK().WithPayload(params.Data)
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}
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rID := h.ReloadAgent.Reload()
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return server.NewReplaceServerAccepted().WithReloadID(rID).WithPayload(params.Data)
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}
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return server.NewReplaceServerOK().WithPayload(params.Data)
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}
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return server.NewReplaceServerAccepted().WithPayload(params.Data)
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}
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