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Smuggler.cs
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Smuggler.cs
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//-----------------------------------------------------------------------
// <copyright file="Smuggler.cs" company="Hibernating Rhinos LTD">
// Copyright (c) Hibernating Rhinos LTD. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Text;
using Newtonsoft.Json;
using Raven.Json.Linq;
namespace Raven.Smuggler
{
public class Smuggler
{
static void Main(string[] args)
{
if (args.Length < 3 || args[0] != "in" && args[0] != "out")
{
Console.WriteLine(@"
Raven Smuggler - Import/Export utility
Usage:
- Import the dump.raven file to a local instance:
Raven.Smuggler in http://localhost:8080/ dump.raven
- Export a local instance to dump.raven:
Raven.Smuggler out http://localhost:8080/ dump.raven
Optional arguments (after required arguments):
--only-indexes : exports only index definitions
--include-attachments : also export attachments
");
Environment.Exit(-1);
}
try
{
var instanceUrl = args[1];
if (instanceUrl.EndsWith("/") == false)
instanceUrl += "/";
var file = args[2];
switch (args[0])
{
case "in":
ImportData(instanceUrl, file);
break;
case "out":
bool exportIndexesOnly = args.Any(arg => arg.Equals("--only-indexes"));
bool inlcudeAttachments = args.Any(arg => arg.Equals("--include-attachments"));
ExportData(new ExportSpec(instanceUrl, file, exportIndexesOnly, inlcudeAttachments));
break;
}
}
catch (Exception e)
{
Console.WriteLine(e);
Environment.Exit(-1);
}
}
public class ExportSpec
{
public ExportSpec(string instanceUrl, string file, bool exportIndexesOnly, bool includeAttachments)
{
InstanceUrl = instanceUrl;
File = file;
ExportIndexesOnly = exportIndexesOnly;
IncludeAttachments = includeAttachments;
}
public string InstanceUrl { get; private set; }
public string File { get; private set; }
public bool ExportIndexesOnly { get; private set; }
public bool IncludeAttachments { get; private set; }
}
public static void ExportData(ExportSpec exportSpec)
{
using (var streamWriter = new StreamWriter(new GZipStream(File.Create(exportSpec.File), CompressionMode.Compress)))
{
var jsonWriter = new JsonTextWriter(streamWriter)
{
Formatting = Formatting.Indented
};
jsonWriter.WriteStartObject();
jsonWriter.WritePropertyName("Indexes");
jsonWriter.WriteStartArray();
using (var webClient = new WebClient())
{
webClient.UseDefaultCredentials = true;
webClient.Credentials = CredentialCache.DefaultNetworkCredentials;
int totalCount = 0;
while (true)
{
var documents = GetString(webClient.DownloadData(exportSpec.InstanceUrl + "indexes?pageSize=128&start=" + totalCount));
var array = RavenJArray.Parse(documents);
if (array.Length == 0)
{
Console.WriteLine("Done with reading indexes, total: {0}", totalCount);
break;
}
totalCount += array.Length;
Console.WriteLine("Reading batch of {0,3} indexes, read so far: {1,10:#,#}", array.Length,
totalCount);
foreach (RavenJToken item in array)
{
item.WriteTo(jsonWriter);
}
}
}
jsonWriter.WriteEndArray();
jsonWriter.WritePropertyName("Docs");
jsonWriter.WriteStartArray();
if (!exportSpec.ExportIndexesOnly)
{
ExportDocuments(exportSpec, jsonWriter);
}
jsonWriter.WriteEndArray();
jsonWriter.WritePropertyName("Attachments");
jsonWriter.WriteStartArray();
if (exportSpec.IncludeAttachments)
{
ExportAttachments(jsonWriter, exportSpec);
}
jsonWriter.WriteEndArray();
jsonWriter.WriteEndObject();
streamWriter.Flush();
}
}
private static void ExportDocuments(ExportSpec exportSpec, JsonTextWriter jsonWriter)
{
using (var webClient = new WebClient())
{
webClient.UseDefaultCredentials = true;
webClient.Credentials = CredentialCache.DefaultNetworkCredentials;
var lastEtag = Guid.Empty;
int totalCount = 0;
while (true)
{
var documents =
GetString(webClient.DownloadData(exportSpec.InstanceUrl + "docs?pageSize=128&etag=" + lastEtag));
var array = RavenJArray.Parse(documents);
if (array.Length == 0)
{
Console.WriteLine("Done with reading documents, total: {0}", totalCount);
break;
}
totalCount += array.Length;
Console.WriteLine("Reading batch of {0,3} documents, read so far: {1,10:#,#}", array.Length,
totalCount);
foreach (RavenJToken item in array)
{
item.WriteTo(jsonWriter);
}
lastEtag = new Guid(array.Last().Value<RavenJObject>("@metadata").Value<string>("@etag"));
}
}
}
static void ExportAttachments(JsonTextWriter jsonWriter, ExportSpec exportSpec)
{
using (var webClient = new WebClient())
{
webClient.UseDefaultCredentials = true;
webClient.Credentials = CredentialCache.DefaultNetworkCredentials;
var lastEtag = Guid.Empty;
int totalCount = 0;
while (true)
{
var attachmentInfo = GetString(webClient.DownloadData(exportSpec.InstanceUrl + "/static/?pageSize=128&etag=" + lastEtag));
var array = RavenJArray.Parse(attachmentInfo);
if (array.Length == 0)
{
Console.WriteLine("Done with reading attachments, total: {0}", totalCount);
break;
}
totalCount += array.Length;
Console.WriteLine("Reading batch of {0,3} attachments, read so far: {1,10:#,#}", array.Length,
totalCount);
foreach (var item in array)
{
Console.WriteLine("Downloading attachment: {0}", item.Value<string>("Key"));
var attachmentData = webClient.DownloadData(exportSpec.InstanceUrl + "/static/" + item.Value<string>("Key"));
new RavenJObject
{
{"Data", attachmentData},
{"Metadata", item.Value<RavenJObject>("Metadata")},
{"Key", item.Value<string>("Key")}
}
.WriteTo(jsonWriter);
}
lastEtag = new Guid(array.Last().Value<string>("Etag"));
}
}
}
private class AttachmentExportInfo
{
public byte[] Data { get; set; }
public RavenJObject Metadata { get; set; }
public string Key { get; set; }
}
public static string GetString(byte[] downloadData)
{
var ms = new MemoryStream(downloadData);
return new StreamReader(ms, Encoding.UTF8).ReadToEnd();
}
public static void ImportData(string instanceUrl, string file)
{
var sw = Stopwatch.StartNew();
using (FileStream fileStream = File.OpenRead(file))
{
// Try to read the stream compressed, otherwise continue uncompressed.
JsonTextReader jsonReader;
try
{
StreamReader streamReader = new StreamReader(new GZipStream(fileStream, CompressionMode.Decompress));
jsonReader = new JsonTextReader(streamReader);
if (jsonReader.Read() == false)
return;
}
catch (InvalidDataException)
{
fileStream.Seek(0, SeekOrigin.Begin);
StreamReader streamReader = new StreamReader(fileStream);
jsonReader = new JsonTextReader(streamReader);
if (jsonReader.Read() == false)
return;
}
if (jsonReader.TokenType != JsonToken.StartObject)
throw new InvalidDataException("StartObject was expected");
// should read indexes now
if (jsonReader.Read() == false)
return;
if (jsonReader.TokenType != JsonToken.PropertyName)
throw new InvalidDataException("PropertyName was expected");
if (Equals("Indexes", jsonReader.Value) == false)
throw new InvalidDataException("Indexes property was expected");
if (jsonReader.Read() == false)
return;
if (jsonReader.TokenType != JsonToken.StartArray)
throw new InvalidDataException("StartArray was expected");
using (var webClient = new WebClient())
{
webClient.UseDefaultCredentials = true;
webClient.Headers.Add("Content-Type", "application/json; charset=utf-8");
webClient.Credentials = CredentialCache.DefaultNetworkCredentials;
while (jsonReader.Read() && jsonReader.TokenType != JsonToken.EndArray)
{
var index = RavenJToken.ReadFrom(jsonReader);
var indexName = index.Value<string>("name");
if (indexName.StartsWith("Raven/") || indexName.StartsWith("Temp/"))
continue;
using (var streamWriter = new StreamWriter(webClient.OpenWrite(instanceUrl + "indexes/" + indexName, "PUT")))
using (var jsonTextWriter = new JsonTextWriter(streamWriter))
{
index.Value<RavenJObject>("definition").WriteTo(jsonTextWriter);
jsonTextWriter.Flush();
streamWriter.Flush();
}
}
}
// should read documents now
if (jsonReader.Read() == false)
return;
if (jsonReader.TokenType != JsonToken.PropertyName)
throw new InvalidDataException("PropertyName was expected");
if (Equals("Docs", jsonReader.Value) == false)
throw new InvalidDataException("Docs property was expected");
if (jsonReader.Read() == false)
return;
if (jsonReader.TokenType != JsonToken.StartArray)
throw new InvalidDataException("StartArray was expected");
var batch = new List<RavenJObject>();
int totalCount = 0;
while (jsonReader.Read() && jsonReader.TokenType != JsonToken.EndArray)
{
totalCount += 1;
var document = RavenJToken.ReadFrom(jsonReader);
batch.Add((RavenJObject)document);
if (batch.Count >= 128)
FlushBatch(instanceUrl, batch);
}
FlushBatch(instanceUrl, batch);
var attachmentCount = 0;
if (jsonReader.Read() == false || jsonReader.TokenType == JsonToken.EndObject)
return;
if (jsonReader.TokenType != JsonToken.PropertyName)
throw new InvalidDataException("PropertyName was expected");
if (Equals("Attachments", jsonReader.Value) == false)
throw new InvalidDataException("Attachment property was expected");
if (jsonReader.Read() == false)
return;
if (jsonReader.TokenType != JsonToken.StartArray)
throw new InvalidDataException("StartArray was expected");
while (jsonReader.Read() && jsonReader.TokenType != JsonToken.EndArray)
{
using (var client = new WebClient())
{
attachmentCount += 1;
var item = RavenJToken.ReadFrom(jsonReader);
var attachmentExportInfo =
new JsonSerializer
{
Converters = {new TrivialJsonToJsonJsonConverter()}
}.Deserialize<AttachmentExportInfo>(new RavenJTokenReader(item));
Console.WriteLine("Importing attachment {0}", attachmentExportInfo.Key);
if (attachmentExportInfo.Metadata != null)
{
foreach (var header in attachmentExportInfo.Metadata)
{
client.Headers.Add(header.Key, StripQuotesIfNeeded(header.Value));
}
}
using (var writer = client.OpenWrite(instanceUrl + "static/" + attachmentExportInfo.Key, "PUT"))
{
writer.Write(attachmentExportInfo.Data, 0, attachmentExportInfo.Data.Length);
writer.Flush();
}
}
}
Console.WriteLine("Imported {0:#,#} documents and {1:#,#} attachments in {2:#,#} ms", totalCount, attachmentCount, sw.ElapsedMilliseconds);
}
}
public class TrivialJsonToJsonJsonConverter : JsonConverter
{
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
throw new NotImplementedException();
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return RavenJObject.Load(reader);
}
public override bool CanConvert(Type objectType)
{
return objectType == typeof (RavenJObject);
}
}
private static string StripQuotesIfNeeded(RavenJToken value)
{
var str = value.ToString(Formatting.None);
if (str.StartsWith("\"") && str.EndsWith("\""))
return str.Substring(1, str.Length - 2);
return str;
}
private static void FlushBatch(string instanceUrl, List<RavenJObject> batch)
{
var sw = Stopwatch.StartNew();
long size;
using (var webClient = new WebClient())
{
webClient.Headers.Add("Content-Type", "application/json; charset=utf-8");
webClient.UseDefaultCredentials = true;
webClient.Credentials = CredentialCache.DefaultNetworkCredentials;
using (var stream = new MemoryStream())
{
using (var streamWriter = new StreamWriter(stream, Encoding.UTF8))
using (var jsonTextWriter = new JsonTextWriter(streamWriter))
{
var commands = new RavenJArray();
foreach (var doc in batch)
{
var metadata = doc.Value<RavenJObject>("@metadata");
doc.Remove("@metadata");
commands.Add(new RavenJObject
{
{"Method", "PUT"},
{"Document", doc},
{"Metadata", metadata},
{"Key", metadata.Value<string>("@id")}
});
}
commands.WriteTo(jsonTextWriter);
jsonTextWriter.Flush();
streamWriter.Flush();
stream.Flush();
size = stream.Length;
using (var netStream = webClient.OpenWrite(instanceUrl + "bulk_docs", "POST"))
{
stream.WriteTo(netStream);
netStream.Flush();
}
}
}
}
Console.WriteLine("Wrote {0} documents [{1:#,#} kb] in {2:#,#} ms",
batch.Count, Math.Round((double)size / 1024, 2), sw.ElapsedMilliseconds);
batch.Clear();
}
}
}