151 lines
4.2 KiB
Go
151 lines
4.2 KiB
Go
// Copyright © 2016 Abcum Ltd
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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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package cli
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import (
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"fmt"
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"io"
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"net/http"
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"os"
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"io/ioutil"
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"github.com/spf13/cobra"
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"github.com/abcum/surreal/log"
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)
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var (
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exportUser string
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exportPass string
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exportConn string
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exportNS string
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exportDB string
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)
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var exportCmd = &cobra.Command{
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Use: "export [flags] <file>",
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Short: "Export an existing database into a SQL script",
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Example: " surreal export --auth root:root backup.sql",
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RunE: func(cmd *cobra.Command, args []string) (err error) {
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var fle *os.File
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var req *http.Request
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var res *http.Response
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// Ensure that the command has a filepath
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// as the output file argument. If no filepath
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// has been provided then return an error.
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if len(args) != 1 {
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log.Fatalln("No filepath provided.")
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return
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}
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// Attempt to open or create the specified file
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// in write-only mode, and if there is a problem
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// creating the file, then return an error.
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if fle, err = os.OpenFile(args[0], os.O_CREATE|os.O_WRONLY, 0644); err != nil {
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log.Fatalln("Export failed - please check the filepath and try again.")
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return
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}
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defer fle.Close()
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// Create a new http request object that we
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// can use to connect to the export endpoint
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// using a GET http request type.
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url := fmt.Sprintf("%s/export", exportConn)
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if req, err = http.NewRequest("GET", url, nil); err != nil {
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log.Fatalln("Connection failed - check the connection details and try again.")
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return
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}
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// Specify that the request is an octet stream
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req.Header.Set("Content-Type", "application/octet-stream")
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// Specify the db authentication settings
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req.SetBasicAuth(exportUser, exportPass)
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// Specify the namespace to export
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req.Header.Set("NS", exportNS)
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// Specify the database to export
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req.Header.Set("DB", exportDB)
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// Attempt to dial the export endpoint and
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// if there is an error then stop execution
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// and return the connection error.
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if res, err = http.DefaultClient.Do(req); err != nil {
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log.Fatalln("Connection failed - check the connection details and try again.")
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return
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}
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// Ensure that we close the body, otherwise
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// if the Body is not closed, the Client can
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// not use the underlying transport again.
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defer res.Body.Close()
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// Ensure that we didn't receive a 401 status
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// code back from the server, otherwise there
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// was a problem with our authentication.
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if res.StatusCode == 401 {
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log.Fatalln("Authentication failed - check the connection details and try again.")
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return
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}
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// Ensure that we received a http 200 status
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// code back from the server, otherwise there
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// was a problem with our request.
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if res.StatusCode != 200 {
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bdy, _ := ioutil.ReadAll(res.Body)
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log.Fatalf("%s", bdy)
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return
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}
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// Copy the http response body to stdOut so
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// that we can pipe the response to other
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// commands or processes.
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if _, err = io.Copy(fle, res.Body); err != nil {
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log.Fatalln("Export failed - there was an error saving the database content.")
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return
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}
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return
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},
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}
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func init() {
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exportCmd.PersistentFlags().StringVarP(&exportUser, "user", "u", "root", "Database authentication username to use when connecting.")
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exportCmd.PersistentFlags().StringVarP(&exportPass, "pass", "p", "pass", "Database authentication password to use when connecting.")
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exportCmd.PersistentFlags().StringVarP(&exportConn, "conn", "c", "https://surreal.io", "Remote database server url to connect to.")
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exportCmd.PersistentFlags().StringVar(&exportNS, "ns", "", "Master authentication details to use when connecting.")
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exportCmd.PersistentFlags().StringVar(&exportDB, "db", "", "Master authentication details to use when connecting.")
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}
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