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schema.go
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schema.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package namespace
import (
"fmt"
"net/http"
"path"
clusterclient "github.com/m3db/m3/src/cluster/client"
"github.com/m3db/m3/src/cluster/kv"
"github.com/m3db/m3/src/dbnode/namespace/kvadmin"
"github.com/m3db/m3/src/query/api/v1/handler"
"github.com/m3db/m3/src/query/api/v1/handler/prometheus/handleroptions"
"github.com/m3db/m3/src/query/generated/proto/admin"
"github.com/m3db/m3/src/query/util/logging"
xerrors "github.com/m3db/m3/src/x/errors"
"github.com/m3db/m3/src/x/instrument"
xhttp "github.com/m3db/m3/src/x/net/http"
"github.com/gogo/protobuf/jsonpb"
"go.uber.org/zap"
)
var (
// M3DBSchemaURL is the url for the M3DB schema handler.
M3DBSchemaURL = path.Join(handler.RoutePrefixV1, M3DBServiceSchemaPathName)
// SchemaDeployHTTPMethod is the HTTP method used to append to this resource.
SchemaDeployHTTPMethod = http.MethodPost
)
// SchemaHandler is the handler for namespace schema upserts.
type SchemaHandler Handler
// For unit test purpose.
var newAdminService = kvadmin.NewAdminService
// NewSchemaHandler returns a new instance of SchemaHandler.
func NewSchemaHandler(
client clusterclient.Client,
instrumentOpts instrument.Options,
) *SchemaHandler {
return &SchemaHandler{
client: client,
instrumentOpts: instrumentOpts,
}
}
func (h *SchemaHandler) ServeHTTP(
svc handleroptions.ServiceNameAndDefaults,
w http.ResponseWriter,
r *http.Request,
) {
ctx := r.Context()
logger := logging.WithContext(ctx, h.instrumentOpts)
md, rErr := h.parseRequest(r)
if rErr != nil {
logger.Error("unable to parse request", zap.Error(rErr))
xhttp.WriteError(w, rErr)
return
}
opts := handleroptions.NewServiceOptions(svc, r.Header, nil)
resp, err := h.Add(md, opts)
if err != nil {
if err == kv.ErrNotFound || xerrors.InnerError(err) == kv.ErrNotFound {
logger.Error("namespaces metadata key does not exist", zap.Error(err))
xhttp.WriteError(w, err)
return
}
if err == kvadmin.ErrNamespaceNotFound || xerrors.InnerError(err) == kvadmin.ErrNamespaceNotFound {
logger.Error("namespace does not exist", zap.Error(err))
xhttp.WriteError(w, xhttp.NewError(err, http.StatusNotFound))
return
}
logger.Error("unable to deploy schema to namespace", zap.Error(err))
xhttp.WriteError(w, err)
return
}
xhttp.WriteProtoMsgJSONResponse(w, &resp, logger)
}
func (h *SchemaHandler) parseRequest(r *http.Request) (*admin.NamespaceSchemaAddRequest, error) {
defer r.Body.Close()
var schemaAddReq admin.NamespaceSchemaAddRequest
if err := jsonpb.Unmarshal(r.Body, &schemaAddReq); err != nil {
return nil, xerrors.NewInvalidParamsError(err)
}
return &schemaAddReq, nil
}
// Add adds schema to an existing namespace.
func (h *SchemaHandler) Add(
addReq *admin.NamespaceSchemaAddRequest,
opts handleroptions.ServiceOptions,
) (admin.NamespaceSchemaAddResponse, error) {
var emptyRep = admin.NamespaceSchemaAddResponse{}
store, err := h.client.Store(opts.KVOverrideOptions())
if err != nil {
return emptyRep, err
}
schemaAdmin := newAdminService(store, M3DBNodeNamespacesKey, nil)
deployID, err := schemaAdmin.DeploySchema(addReq.Name, addReq.ProtoName, addReq.MsgName, addReq.ProtoMap)
if err != nil {
return emptyRep, err
}
return admin.NamespaceSchemaAddResponse{DeployID: deployID}, nil
}
// SchemaResetHandler is the handler for namespace schema reset.
type SchemaResetHandler Handler
// NewSchemaResetHandler returns a new instance of SchemaHandler.
func NewSchemaResetHandler(
client clusterclient.Client,
instrumentOpts instrument.Options,
) *SchemaResetHandler {
return &SchemaResetHandler{
client: client,
instrumentOpts: instrumentOpts,
}
}
func (h *SchemaResetHandler) ServeHTTP(
svc handleroptions.ServiceNameAndDefaults,
w http.ResponseWriter,
r *http.Request,
) {
ctx := r.Context()
logger := logging.WithContext(ctx, h.instrumentOpts)
md, rErr := h.parseRequest(r)
if rErr != nil {
logger.Error("unable to parse request", zap.Error(rErr))
xhttp.WriteError(w, rErr)
return
}
opts := handleroptions.NewServiceOptions(svc, r.Header, nil)
resp, err := h.Reset(md, opts)
if err != nil {
if err == kv.ErrNotFound || xerrors.InnerError(err) == kv.ErrNotFound {
logger.Error("namespaces metadata key does not exist", zap.Error(err))
xhttp.WriteError(w, err)
return
}
if err == kvadmin.ErrNamespaceNotFound || xerrors.InnerError(err) == kvadmin.ErrNamespaceNotFound {
logger.Error("namespace does not exist", zap.Error(err))
xhttp.WriteError(w, xhttp.NewError(err, http.StatusNotFound))
return
}
logger.Error("unable to reset schema for namespace", zap.Error(err))
xhttp.WriteError(w, err)
return
}
xhttp.WriteProtoMsgJSONResponse(w, resp, logger)
}
func (h *SchemaResetHandler) parseRequest(r *http.Request) (*admin.NamespaceSchemaResetRequest, error) {
defer r.Body.Close()
var schemaResetReq admin.NamespaceSchemaResetRequest
if err := jsonpb.Unmarshal(r.Body, &schemaResetReq); err != nil {
return nil, xerrors.NewInvalidParamsError(err)
}
return &schemaResetReq, nil
}
// Reset resets schema for an existing namespace.
func (h *SchemaResetHandler) Reset(
addReq *admin.NamespaceSchemaResetRequest,
opts handleroptions.ServiceOptions,
) (*admin.NamespaceSchemaResetResponse, error) {
var emptyRep = admin.NamespaceSchemaResetResponse{}
if !opts.Force {
err := fmt.Errorf("CAUTION! Reset schema will prevent proto-enabled namespace from loading, proceed if you know what you are doing, please retry with force set to true")
return &emptyRep, xerrors.NewInvalidParamsError(err)
}
store, err := h.client.Store(opts.KVOverrideOptions())
if err != nil {
return &emptyRep, err
}
schemaAdmin := newAdminService(store, M3DBNodeNamespacesKey, nil)
err = schemaAdmin.ResetSchema(addReq.Name)
if err != nil {
return &emptyRep, err
}
return &emptyRep, nil
}