/
web.go
3125 lines (2797 loc) · 114 KB
/
web.go
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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package web defines web APIs to be used with Spanner migration tool frontend.
// Apart from schema conversion, this package involves API to update
// converted schema.
package webv2
import (
"bufio"
"bytes"
"context"
"database/sql"
"encoding/json"
"fmt"
"io/fs"
"io/ioutil"
"log"
"net/http"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"time"
instance "cloud.google.com/go/spanner/admin/instance/apiv1"
"github.com/GoogleCloudPlatform/spanner-migration-tool/cmd"
"github.com/GoogleCloudPlatform/spanner-migration-tool/common/constants"
"github.com/GoogleCloudPlatform/spanner-migration-tool/common/utils"
"github.com/GoogleCloudPlatform/spanner-migration-tool/conversion"
"github.com/GoogleCloudPlatform/spanner-migration-tool/internal"
"github.com/GoogleCloudPlatform/spanner-migration-tool/internal/reports"
"github.com/GoogleCloudPlatform/spanner-migration-tool/logger"
"github.com/GoogleCloudPlatform/spanner-migration-tool/profiles"
"github.com/GoogleCloudPlatform/spanner-migration-tool/proto/migration"
"github.com/GoogleCloudPlatform/spanner-migration-tool/schema"
"github.com/GoogleCloudPlatform/spanner-migration-tool/sources/common"
"github.com/GoogleCloudPlatform/spanner-migration-tool/sources/mysql"
"github.com/GoogleCloudPlatform/spanner-migration-tool/sources/oracle"
"github.com/GoogleCloudPlatform/spanner-migration-tool/sources/postgres"
"github.com/GoogleCloudPlatform/spanner-migration-tool/sources/sqlserver"
"github.com/GoogleCloudPlatform/spanner-migration-tool/spanner/ddl"
"github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/config"
helpers "github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/helpers"
"github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/profile"
"github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/table"
utilities "github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/utilities"
"github.com/google/uuid"
"github.com/pkg/browser"
instancepb "google.golang.org/genproto/googleapis/spanner/admin/instance/v1"
"github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/session"
_ "github.com/go-sql-driver/mysql"
"github.com/gorilla/handlers"
index "github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/index"
primarykey "github.com/GoogleCloudPlatform/spanner-migration-tool/webv2/primarykey"
go_ora "github.com/sijms/go-ora/v2"
)
// TODO:(searce):
// 1) Test cases for APIs
// 2) API for saving/updating table-level changes.
// 3) API for showing logs
// 4) Split all routing to an route.go file
// 5) API for downloading the schema file, ddl file and summary report file.
// 6) Update schema conv after setting global datatypes and return conv. (setTypeMap)
// 7) Add rateConversion() in schema conversion, ddl and report APIs.
// 8) Add an overview in summary report API
var mysqlTypeMap = make(map[string][]typeIssue)
var postgresTypeMap = make(map[string][]typeIssue)
var sqlserverTypeMap = make(map[string][]typeIssue)
var oracleTypeMap = make(map[string][]typeIssue)
var mysqlDefaultTypeMap = make(map[string]ddl.Type)
var postgresDefaultTypeMap = make(map[string]ddl.Type)
var sqlserverDefaultTypeMap = make(map[string]ddl.Type)
var oracleDefaultTypeMap = make(map[string]ddl.Type)
// TODO:(searce) organize this file according to go style guidelines: generally
// have public constants and public type definitions first, then public
// functions, and finally helper functions (usually in order of importance).
// driverConfig contains the parameters needed to make a direct database connection. It is
// used to communicate via HTTP with the frontend.
type driverConfig struct {
Driver string `json:"Driver"`
IsSharded bool `json:"IsSharded"`
Host string `json:"Host"`
Port string `json:"Port"`
Database string `json:"Database"`
User string `json:"User"`
Password string `json:"Password"`
Dialect string `json:"Dialect"`
DataShardId string `json:"DataShardId"`
}
type driverConfigs struct {
DbConfigs []driverConfig `json:"DbConfigs"`
IsRestoredSession string `json:"IsRestoredSession"`
}
type shardedDataflowConfig struct {
MigrationProfile profiles.SourceProfileConfig
}
type DataflowLocation struct {
DataflowConfig profiles.DataflowConfig
}
type sessionSummary struct {
DatabaseType string
ConnectionDetail string
SourceTableCount int
SpannerTableCount int
SourceIndexCount int
SpannerIndexCount int
ConnectionType string
SourceDatabaseName string
Region string
NodeCount int
ProcessingUnits int
Instance string
Dialect string
IsSharded bool
}
type progressDetails struct {
Progress int
ErrorMessage string
ProgressStatus int
}
type migrationDetails struct {
TargetDetails targetDetails `json:"TargetDetails"`
DataflowConfig dataflowConfig `json:"DataflowConfig"`
MigrationMode string `json:MigrationMode`
MigrationType string `json:MigrationType`
IsSharded bool `json:"IsSharded"`
SkipForeignKeys bool `json:"skipForeignKeys"`
}
type dataflowConfig struct {
Network string `json:Network`
Subnetwork string `json:Subnetwork`
MaxWorkers string `json:MaxWorkers`
NumWorkers string `json:NumWorkers`
ServiceAccountEmail string `json:ServiceAccountEmail`
HostProjectId string `json:HostProjectId`
}
type targetDetails struct {
TargetDB string `json:"TargetDB"`
SourceConnectionProfileName string `json:"SourceConnProfile"`
TargetConnectionProfileName string `json:"TargetConnProfile"`
ReplicationSlot string `json:"ReplicationSlot"`
Publication string `json:"Publication"`
}
type StreamingCfg struct {
DatastreamCfg DatastreamCfg `json:"datastreamCfg"`
DataflowCfg DataflowCfg `json:"dataflowCfg"`
TmpDir string `json:"tmpDir"`
}
type DataflowCfg struct {
JobName string `json:"JobName"`
Location string `json:"Location"`
Network string `json:"Network"`
Subnetwork string `json:"Subnetwork"`
MaxWorkers string `json:"MaxWorkers"`
NumWorkers string `json:"NumWorkers"`
ServiceAccountEmail string `json:"ServiceAccountEmail"`
HostProjectId string `json:"HostProjectId"`
}
type ConnectionConfig struct {
Name string `json:"name"`
Location string `json:"location"`
}
type DatastreamCfg struct {
StreamId string `json:"streamId"`
StreamLocation string `json:"streamLocation"`
StreamDisplayName string `json:"streamDisplayName"`
SourceConnectionConfig ConnectionConfig `json:"sourceConnectionConfig"`
TargetConnectionConfig ConnectionConfig `json:"destinationConnectionConfig"`
Properties string `json:properties`
}
type ColMaxLength struct {
SpDataType string `json:"spDataType"`
SpColMaxLength string `json:"spColMaxLength"`
}
type TableIdAndName struct {
Id string `json:"Id"`
Name string `json:"Name"`
}
type ShardIdPrimaryKey struct {
AddedAtTheStart bool `json:"AddedAtTheStart"`
}
// databaseConnection creates connection with database
func databaseConnection(w http.ResponseWriter, r *http.Request) {
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var config driverConfig
err = json.Unmarshal(reqBody, &config)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
var dataSourceName string
switch config.Driver {
case constants.POSTGRES:
dataSourceName = fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable", config.Host, config.Port, config.User, config.Password, config.Database)
case constants.MYSQL:
dataSourceName = fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", config.User, config.Password, config.Host, config.Port, config.Database)
case constants.SQLSERVER:
dataSourceName = fmt.Sprintf(`sqlserver://%s:%s@%s:%s?database=%s`, config.User, config.Password, config.Host, config.Port, config.Database)
case constants.ORACLE:
portNumber, _ := strconv.Atoi(config.Port)
dataSourceName = go_ora.BuildUrl(config.Host, portNumber, config.Database, config.User, config.Password, nil)
default:
http.Error(w, fmt.Sprintf("Driver : '%s' is not supported", config.Driver), http.StatusBadRequest)
return
}
sourceDB, err := sql.Open(config.Driver, dataSourceName)
if err != nil {
http.Error(w, fmt.Sprintf("Database connection error, check connection properties, ERROR: %v", err), http.StatusInternalServerError)
return
}
// Open doesn't open a connection. Validate database connection.
err = sourceDB.Ping()
if err != nil {
http.Error(w, fmt.Sprintf("Database connection error, check connection properties, ERROR: %v", err), http.StatusInternalServerError)
return
}
sessionState := session.GetSessionState()
sessionState.SourceDB = sourceDB
sessionState.DbName = config.Database
// schema and user is same in oracle.
if config.Driver == constants.ORACLE {
sessionState.DbName = config.User
}
sessionState.Driver = config.Driver
sessionState.SessionFile = ""
sessionState.Dialect = config.Dialect
sessionState.IsSharded = config.IsSharded
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Host: config.Host,
Port: config.Port,
User: config.User,
Password: config.Password,
ConnectionType: helpers.DIRECT_CONNECT_MODE,
}
w.WriteHeader(http.StatusOK)
}
// convertSchemaSQL converts source database to Spanner when using
// with postgres and mysql driver.
func convertSchemaSQL(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
if sessionState.SourceDB == nil || sessionState.DbName == "" || sessionState.Driver == "" {
http.Error(w, fmt.Sprintf("Database is not configured or Database connection is lost. Please set configuration and connect to database."), http.StatusNotFound)
return
}
conv := internal.MakeConv()
conv.SpDialect = sessionState.Dialect
conv.IsSharded = sessionState.IsSharded
var err error
additionalSchemaAttributes := internal.AdditionalSchemaAttributes{
IsSharded: sessionState.IsSharded,
}
switch sessionState.Driver {
case constants.MYSQL:
err = common.ProcessSchema(conv, mysql.InfoSchemaImpl{DbName: sessionState.DbName, Db: sessionState.SourceDB}, common.DefaultWorkers, additionalSchemaAttributes)
case constants.POSTGRES:
temp := false
err = common.ProcessSchema(conv, postgres.InfoSchemaImpl{Db: sessionState.SourceDB, IsSchemaUnique: &temp}, common.DefaultWorkers, additionalSchemaAttributes)
case constants.SQLSERVER:
err = common.ProcessSchema(conv, sqlserver.InfoSchemaImpl{DbName: sessionState.DbName, Db: sessionState.SourceDB}, common.DefaultWorkers, additionalSchemaAttributes)
case constants.ORACLE:
err = common.ProcessSchema(conv, oracle.InfoSchemaImpl{DbName: strings.ToUpper(sessionState.DbName), Db: sessionState.SourceDB}, common.DefaultWorkers, additionalSchemaAttributes)
default:
http.Error(w, fmt.Sprintf("Driver : '%s' is not supported", sessionState.Driver), http.StatusBadRequest)
return
}
if err != nil {
http.Error(w, fmt.Sprintf("Schema Conversion Error : %v", err), http.StatusNotFound)
return
}
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
sessionState.Conv = conv
if sessionState.IsSharded {
setShardIdColumnAsPrimaryKey(true)
addShardIdColumnToForeignKeys(true)
ruleId := internal.GenerateRuleId()
rule := internal.Rule{
Id: ruleId,
Name: ruleId,
Type: constants.AddShardIdPrimaryKey,
AssociatedObjects: "All Tables",
Data: ShardIdPrimaryKey{
AddedAtTheStart: true,
},
Enabled: true,
}
sessionState := session.GetSessionState()
sessionState.Conv.Rules = append(sessionState.Conv.Rules, rule)
session.UpdateSessionFile()
}
primarykey.DetectHotspot()
index.IndexSuggestion()
sessionMetadata := session.SessionMetadata{
SessionName: "NewSession",
DatabaseType: sessionState.Driver,
DatabaseName: sessionState.DbName,
Dialect: sessionState.Dialect,
}
convm := session.ConvWithMetadata{
SessionMetadata: sessionMetadata,
Conv: *sessionState.Conv,
}
sessionState.SessionMetadata = sessionMetadata
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(convm)
}
// dumpConfig contains the parameters needed to run the tool using dump approach. It is
// used to communicate via HTTP with the frontend.
type dumpConfig struct {
Driver string `json:"Driver"`
FilePath string `json:"Path"`
}
type spannerDetails struct {
Dialect string `json:"Dialect"`
}
type convertFromDumpRequest struct {
Config dumpConfig `json:"Config"`
SpannerDetails spannerDetails `json:"SpannerDetails"`
}
func setSourceDBDetailsForDump(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var dc dumpConfig
err = json.Unmarshal(reqBody, &dc)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
dc.FilePath = "upload-file/" + dc.FilePath
_, err = os.Open(dc.FilePath)
if err != nil {
http.Error(w, fmt.Sprintf("Failed to open dump file : %v, no such file or directory", dc.FilePath), http.StatusNotFound)
return
}
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Path: dc.FilePath,
ConnectionType: helpers.DUMP_MODE,
}
w.WriteHeader(http.StatusOK)
}
// getSourceProfileConfig returns the configured source profile by the user
func getSourceProfileConfig(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
sourceProfileConfig := sessionState.SourceProfileConfig
if sourceProfileConfig.ConfigType == "dataflow" {
for _, dataShard := range sourceProfileConfig.ShardConfigurationDataflow.DataShards {
bucket, rootPath, err := profile.GetBucket(sessionState.GCPProjectID, sessionState.Region, dataShard.DstConnectionProfile.Name)
if err != nil {
http.Error(w, fmt.Sprintf("error while getting target bucket: %v", err), http.StatusInternalServerError)
return
}
dataShard.TmpDir = "gs://" + bucket + rootPath
}
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(sourceProfileConfig)
}
func setDataflowDetailsForShardedMigrations(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var dataflowLocation DataflowLocation
err = json.Unmarshal(reqBody, &dataflowLocation)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
sessionState.SourceProfileConfig.ShardConfigurationDataflow.DataflowConfig = profiles.DataflowConfig{
Location: sessionState.Region,
Network: dataflowLocation.DataflowConfig.Network,
Subnetwork: dataflowLocation.DataflowConfig.Subnetwork,
HostProjectId: dataflowLocation.DataflowConfig.HostProjectId,
MaxWorkers: dataflowLocation.DataflowConfig.MaxWorkers,
NumWorkers: dataflowLocation.DataflowConfig.NumWorkers,
ServiceAccountEmail: dataflowLocation.DataflowConfig.ServiceAccountEmail,
}
w.WriteHeader(http.StatusOK)
}
func setShardsSourceDBDetailsForDataflow(w http.ResponseWriter, r *http.Request) {
//Take the received object and store it into session state.
sessionState := session.GetSessionState()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var srcConfig shardedDataflowConfig
err = json.Unmarshal(reqBody, &srcConfig)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
sessionState.SourceProfileConfig = srcConfig.MigrationProfile
//create dataflow config with defaults, it gets overridden if DataflowConfig is specified using the form.
//create dataflow config with defaults, it gets overridden if DataflowConfig is specified using the form.
sessionState.SourceProfileConfig.ShardConfigurationDataflow.DataflowConfig = profiles.DataflowConfig{
Location: sessionState.Region,
Network: "",
Subnetwork: "",
MaxWorkers: "",
NumWorkers: "",
ServiceAccountEmail: "",
HostProjectId: sessionState.GCPProjectID,
}
w.WriteHeader(http.StatusOK)
}
func setShardsSourceDBDetailsForBulk(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var shardConfigs driverConfigs
err = json.Unmarshal(reqBody, &shardConfigs)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
var connDetailsList []profiles.DirectConnectionConfig
for i, config := range shardConfigs.DbConfigs {
dataSourceName := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", config.User, config.Password, config.Host, config.Port, config.Database)
sourceDB, err := sql.Open(config.Driver, dataSourceName)
if err != nil {
http.Error(w, "Database connection error, check connection properties.", http.StatusInternalServerError)
return
}
// Open doesn't open a connection. Validate database connection.
err = sourceDB.Ping()
if err != nil {
http.Error(w, "Database connection error, check connection properties.", http.StatusInternalServerError)
return
}
sessionState.DbName = config.Database
sessionState.SessionFile = ""
connDetail := profiles.DirectConnectionConfig{
Host: config.Host,
Port: config.Port,
User: config.User,
Password: config.Password,
DbName: config.Database,
DataShardId: config.DataShardId,
}
connDetailsList = append(connDetailsList, connDetail)
//set the first shard as the schema shard when restoring from a session file
if shardConfigs.IsRestoredSession == constants.SESSION_FILE {
if i == 0 {
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Host: config.Host,
Port: config.Port,
User: config.User,
Password: config.Password,
ConnectionType: helpers.DIRECT_CONNECT_MODE,
}
}
}
}
sessionState.ShardedDbConnDetails = connDetailsList
w.WriteHeader(http.StatusOK)
}
func setSourceDBDetailsForDirectConnect(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var config driverConfig
err = json.Unmarshal(reqBody, &config)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
var dataSourceName string
switch config.Driver {
case constants.POSTGRES:
dataSourceName = fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable", config.Host, config.Port, config.User, config.Password, config.Database)
case constants.MYSQL:
dataSourceName = fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", config.User, config.Password, config.Host, config.Port, config.Database)
case constants.SQLSERVER:
dataSourceName = fmt.Sprintf(`sqlserver://%s:%s@%s:%s?database=%s`, config.User, config.Password, config.Host, config.Port, config.Database)
case constants.ORACLE:
portNumber, _ := strconv.Atoi(config.Port)
dataSourceName = go_ora.BuildUrl(config.Host, portNumber, config.Database, config.User, config.Password, nil)
default:
http.Error(w, fmt.Sprintf("Driver : '%s' is not supported", config.Driver), http.StatusBadRequest)
return
}
sourceDB, err := sql.Open(config.Driver, dataSourceName)
if err != nil {
http.Error(w, "Database connection error, check connection properties.", http.StatusInternalServerError)
return
}
// Open doesn't open a connection. Validate database connection.
err = sourceDB.Ping()
if err != nil {
http.Error(w, "Database connection error, check connection properties.", http.StatusInternalServerError)
return
}
sessionState.DbName = config.Database
// schema and user is same in oracle.
if config.Driver == constants.ORACLE {
sessionState.DbName = config.User
}
sessionState.SessionFile = ""
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Host: config.Host,
Port: config.Port,
User: config.User,
Password: config.Password,
ConnectionType: helpers.DIRECT_CONNECT_MODE,
}
w.WriteHeader(http.StatusOK)
}
// convertSchemaDump converts schema from dump file to Spanner schema for
// mysqldump and pg_dump driver.
func convertSchemaDump(w http.ResponseWriter, r *http.Request) {
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var dc convertFromDumpRequest
err = json.Unmarshal(reqBody, &dc)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
f, err := os.Open(constants.UPLOAD_FILE_DIR + "/" + dc.Config.FilePath)
if err != nil {
http.Error(w, fmt.Sprintf("Failed to open dump file : %v, no such file or directory", dc.Config.FilePath), http.StatusNotFound)
return
}
// We don't support Dynamodb in web hence no need to pass schema sample size here.
sourceProfile, _ := profiles.NewSourceProfile("", dc.Config.Driver)
sourceProfile.Driver = dc.Config.Driver
conv, err := conversion.SchemaFromDump(sourceProfile.Driver, dc.SpannerDetails.Dialect, &utils.IOStreams{In: f, Out: os.Stdout})
if err != nil {
http.Error(w, fmt.Sprintf("Schema Conversion Error : %v", err), http.StatusNotFound)
return
}
sessionMetadata := session.SessionMetadata{
SessionName: "NewSession",
DatabaseType: dc.Config.Driver,
DatabaseName: filepath.Base(dc.Config.FilePath),
Dialect: dc.SpannerDetails.Dialect,
}
sessionState := session.GetSessionState()
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
sessionState.Conv = conv
primarykey.DetectHotspot()
index.IndexSuggestion()
sessionState.SessionMetadata = sessionMetadata
sessionState.Driver = dc.Config.Driver
sessionState.DbName = ""
sessionState.SessionFile = ""
sessionState.SourceDB = nil
sessionState.Dialect = dc.SpannerDetails.Dialect
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Path: constants.UPLOAD_FILE_DIR + "/" + dc.Config.FilePath,
ConnectionType: helpers.DUMP_MODE,
}
convm := session.ConvWithMetadata{
SessionMetadata: sessionMetadata,
Conv: *conv,
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(convm)
}
// loadSession load seesion file to Spanner migration tool.
func loadSession(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
utilities.InitObjectId()
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var s session.SessionParams
err = json.Unmarshal(reqBody, &s)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
conv := internal.MakeConv()
metadata := session.SessionMetadata{}
err = session.ReadSessionFileForSessionMetadata(&metadata, constants.UPLOAD_FILE_DIR+"/"+s.FilePath)
if err != nil {
switch err.(type) {
case *fs.PathError:
http.Error(w, fmt.Sprintf("Failed to open session file : %v, no such file or directory", s.FilePath), http.StatusNotFound)
default:
http.Error(w, fmt.Sprintf("Failed to parse session file : %v", err), http.StatusBadRequest)
}
return
}
dbType := metadata.DatabaseType
switch dbType {
case constants.PGDUMP:
dbType = constants.POSTGRES
case constants.MYSQLDUMP:
dbType = constants.MYSQL
}
if dbType != s.Driver {
http.Error(w, fmt.Sprintf("Not a valid %v session file", dbType), http.StatusBadRequest)
return
}
err = conversion.ReadSessionFile(conv, constants.UPLOAD_FILE_DIR+"/"+s.FilePath)
if err != nil {
switch err.(type) {
case *fs.PathError:
http.Error(w, fmt.Sprintf("Failed to open session file : %v, no such file or directory", s.FilePath), http.StatusNotFound)
default:
http.Error(w, fmt.Sprintf("Failed to parse session file : %v", err), http.StatusBadRequest)
}
return
}
sessionMetadata := session.SessionMetadata{
SessionName: "NewSession",
DatabaseType: s.Driver,
DatabaseName: metadata.DatabaseName,
Dialect: conv.SpDialect,
}
if sessionMetadata.DatabaseName == "" {
sessionMetadata.DatabaseName = strings.TrimRight(filepath.Base(s.FilePath), filepath.Ext(s.FilePath))
}
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
sessionState.Conv = conv
primarykey.DetectHotspot()
index.IndexSuggestion()
sessionState.Conv.UsedNames = internal.ComputeUsedNames(sessionState.Conv)
sessionState.SessionMetadata = sessionMetadata
sessionState.Driver = s.Driver
sessionState.SessionFile = constants.UPLOAD_FILE_DIR + s.FilePath
sessionState.SourceDBConnDetails = session.SourceDBConnDetails{
Path: constants.UPLOAD_FILE_DIR + "/" + s.FilePath,
ConnectionType: helpers.SESSION_FILE_MODE,
}
sessionState.Dialect = conv.SpDialect
convm := session.ConvWithMetadata{
SessionMetadata: sessionMetadata,
Conv: *conv,
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(convm)
}
func fetchLastLoadedSessionDetails(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
convm := session.ConvWithMetadata{
SessionMetadata: sessionState.SessionMetadata,
Conv: *sessionState.Conv,
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(convm)
}
// getDDL returns the Spanner DDL for each table in alphabetical order.
// Unlike internal/convert.go's GetDDL, it does not print tables in a way that
// respects the parent/child ordering of interleaved tables.
// Though foreign keys and secondary indexes are displayed, getDDL cannot be used to
// build DDL to send to Spanner.
func getDDL(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
sessionState.Conv.ConvLock.RLock()
defer sessionState.Conv.ConvLock.RUnlock()
c := ddl.Config{Comments: true, ProtectIds: false, SpDialect: sessionState.Conv.SpDialect, Source: sessionState.Driver}
var tables []string
for t := range sessionState.Conv.SpSchema {
tables = append(tables, t)
}
sort.Strings(tables)
ddl := make(map[string]string)
for _, t := range tables {
table := sessionState.Conv.SpSchema[t]
tableDdl := table.PrintCreateTable(sessionState.Conv.SpSchema, c) + ";"
if len(table.Indexes) > 0 {
tableDdl = tableDdl + "\n"
}
for _, index := range table.Indexes {
tableDdl = tableDdl + "\n" + index.PrintCreateIndex(table, c) + ";"
}
if len(table.ForeignKeys) > 0 {
tableDdl = tableDdl + "\n"
}
for _, fk := range table.ForeignKeys {
tableDdl = tableDdl + "\n" + fk.PrintForeignKeyAlterTable(sessionState.Conv.SpSchema, c, t) + ";"
}
ddl[t] = tableDdl
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(ddl)
}
func getStandardTypeToPGSQLTypemap(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(ddl.STANDARD_TYPE_TO_PGSQL_TYPEMAP)
}
func getPGSQLToStandardTypeTypemap(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(ddl.PGSQL_TO_STANDARD_TYPE_TYPEMAP)
}
func spannerDefaultTypeMap(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
if sessionState.Conv == nil || sessionState.Driver == "" {
http.Error(w, "Schema is not converted or Driver is not configured properly. Please retry converting the database to Spanner.", http.StatusNotFound)
return
}
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
initializeTypeMap()
var typeMap map[string]ddl.Type
switch sessionState.Driver {
case constants.MYSQL, constants.MYSQLDUMP:
typeMap = mysqlDefaultTypeMap
case constants.POSTGRES, constants.PGDUMP:
typeMap = postgresDefaultTypeMap
case constants.SQLSERVER:
typeMap = sqlserverDefaultTypeMap
case constants.ORACLE:
typeMap = oracleDefaultTypeMap
default:
http.Error(w, fmt.Sprintf("Driver : '%s' is not supported", sessionState.Driver), http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(typeMap)
}
// getTypeMap returns the source to Spanner typemap only for the
// source types used in current conversion.
func getTypeMap(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
if sessionState.Conv == nil || sessionState.Driver == "" {
http.Error(w, fmt.Sprintf("Schema is not converted or Driver is not configured properly. Please retry converting the database to Spanner."), http.StatusNotFound)
return
}
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
var typeMap map[string][]typeIssue
initializeTypeMap()
switch sessionState.Driver {
case constants.MYSQL, constants.MYSQLDUMP:
typeMap = mysqlTypeMap
case constants.POSTGRES, constants.PGDUMP:
typeMap = postgresTypeMap
case constants.SQLSERVER:
typeMap = sqlserverTypeMap
case constants.ORACLE:
typeMap = oracleTypeMap
default:
http.Error(w, fmt.Sprintf("Driver : '%s' is not supported", sessionState.Driver), http.StatusBadRequest)
return
}
// Filter typeMap so it contains just the types SrcSchema uses.
filteredTypeMap := make(map[string][]typeIssue)
for _, srcTable := range sessionState.Conv.SrcSchema {
for _, colDef := range srcTable.ColDefs {
if _, ok := filteredTypeMap[colDef.Type.Name]; ok {
continue
}
// Timestamp and interval types do not have exact key in typemap.
// Typemap for TIMESTAMP(6), TIMESTAMP(6) WITH LOCAL TIMEZONE,TIMESTAMP(6) WITH TIMEZONE is stored into TIMESTAMP key.
// Same goes with interval types like INTERVAL YEAR(2) TO MONTH, INTERVAL DAY(2) TO SECOND(6) etc.
// If exact key not found then check with regex.
if _, ok := typeMap[colDef.Type.Name]; !ok {
if oracle.TimestampReg.MatchString(colDef.Type.Name) {
filteredTypeMap[colDef.Type.Name] = typeMap["TIMESTAMP"]
} else if oracle.IntervalReg.MatchString(colDef.Type.Name) {
filteredTypeMap[colDef.Type.Name] = typeMap["INTERVAL"]
}
continue
}
filteredTypeMap[colDef.Type.Name] = typeMap[colDef.Type.Name]
}
}
for key, values := range filteredTypeMap {
for i := range values {
if sessionState.Dialect == constants.DIALECT_POSTGRESQL {
spType := ddl.Type{
Name: filteredTypeMap[key][i].T,
}
filteredTypeMap[key][i].DisplayT = ddl.GetPGType(spType)
} else {
filteredTypeMap[key][i].DisplayT = filteredTypeMap[key][i].T
}
}
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(filteredTypeMap)
}
// getTableWithErrors checks the errors in the spanner schema
// and returns a list of tables with errors
func getTableWithErrors(w http.ResponseWriter, r *http.Request) {
sessionState := session.GetSessionState()
sessionState.Conv.ConvLock.RLock()
defer sessionState.Conv.ConvLock.RUnlock()
var tableIdName []TableIdAndName
for id, issues := range sessionState.Conv.SchemaIssues {
if len(issues.TableLevelIssues) != 0 {
t := TableIdAndName{
Id: id,
Name: sessionState.Conv.SpSchema[id].Name,
}
tableIdName = append(tableIdName, t)
}
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(tableIdName)
}
// applyRule allows to add rules that changes the schema
// currently it supports two types of operations viz. SetGlobalDataType and AddIndex
func applyRule(w http.ResponseWriter, r *http.Request) {
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, fmt.Sprintf("Body Read Error : %v", err), http.StatusInternalServerError)
return
}
var rule internal.Rule
err = json.Unmarshal(reqBody, &rule)
if err != nil {
http.Error(w, fmt.Sprintf("Request Body parse error : %v", err), http.StatusBadRequest)
return
}
sessionState := session.GetSessionState()
sessionState.Conv.ConvLock.Lock()
defer sessionState.Conv.ConvLock.Unlock()
if rule.Type == constants.GlobalDataTypeChange {
d, err := json.Marshal(rule.Data)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
typeMap := map[string]string{}
err = json.Unmarshal(d, &typeMap)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
setGlobalDataType(typeMap)
} else if rule.Type == constants.AddIndex {
d, err := json.Marshal(rule.Data)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
newIdx := ddl.CreateIndex{}
err = json.Unmarshal(d, &newIdx)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
addedIndex, err := addIndex(newIdx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
rule.Data = addedIndex
} else if rule.Type == constants.EditColumnMaxLength {
d, err := json.Marshal(rule.Data)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
var colMaxLength ColMaxLength
err = json.Unmarshal(d, &colMaxLength)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
setSpColMaxLength(colMaxLength, rule.AssociatedObjects)
} else if rule.Type == constants.AddShardIdPrimaryKey {
d, err := json.Marshal(rule.Data)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
var shardIdPrimaryKey ShardIdPrimaryKey
err = json.Unmarshal(d, &shardIdPrimaryKey)
if err != nil {
http.Error(w, "Invalid rule data", http.StatusInternalServerError)
return
}
tableName := checkInterleaving()
if tableName != "" {
http.Error(w, fmt.Sprintf("Rule cannot be added because some tables, eg: %v are interleaved. Please remove interleaving and try again.", tableName), http.StatusBadRequest)
return
}
setShardIdColumnAsPrimaryKey(shardIdPrimaryKey.AddedAtTheStart)
addShardIdColumnToForeignKeys(shardIdPrimaryKey.AddedAtTheStart)
} else {
http.Error(w, "Invalid rule type", http.StatusInternalServerError)
return
}
ruleId := internal.GenerateRuleId()
rule.Id = ruleId
sessionState.Conv.Rules = append(sessionState.Conv.Rules, rule)
session.UpdateSessionFile()
convm := session.ConvWithMetadata{
SessionMetadata: sessionState.SessionMetadata,
Conv: *sessionState.Conv,