1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
|
// Copyright Epic Games, Inc. All Rights Reserved.
#include "zenremoteprojectstore.h"
#include <zencore/compactbinarybuilder.h>
#include <zencore/compactbinarypackage.h>
#include <zencore/compositebuffer.h>
#include <zencore/fmtutils.h>
#include <zencore/stream.h>
#include <zenhttp/httpclient.h>
#include <zenutil/packageformat.h>
namespace zen {
using namespace std::literals;
class ZenRemoteStore : public RemoteProjectStore
{
public:
ZenRemoteStore(std::string_view HostAddress,
std::string_view Project,
std::string_view Oplog,
const std::filesystem::path& TempFilePath)
: m_HostAddress(HostAddress)
, m_ProjectStoreUrl(fmt::format("{}/prj"sv, m_HostAddress))
, m_Project(Project)
, m_Oplog(Oplog)
, m_TempFilePath(TempFilePath)
, m_Client(m_ProjectStoreUrl, {.LogCategory = "ZenRemoteStore", .RetryCount = 2})
{
}
virtual RemoteStoreInfo GetInfo() const override
{
return {.CreateBlocks = false,
.UseTempBlockFiles = false,
.ContainerName = fmt::format("{}/{}", m_Project, m_Oplog),
.BaseContainerName = "",
.Description = fmt::format("[zen] {}"sv, m_HostAddress)};
}
virtual SaveResult SaveContainer(const IoBuffer& Payload) override
{
std::string SaveRequest = fmt::format("/{}/oplog/{}/save"sv, m_Project, m_Oplog);
HttpClient::Response Response = m_Client.Post(SaveRequest, Payload, ZenContentType::kCbObject);
SaveResult Result = SaveResult{ConvertResult(Response)};
if (Result.ErrorCode)
{
Result.Reason = fmt::format("Failed saving oplog container to {}/{}/{}. Reason: '{}'",
m_ProjectStoreUrl,
m_Project,
m_Oplog,
Result.Reason);
return Result;
}
CbObject ResponseObject = Response.AsObject();
if (!ResponseObject)
{
Result.Reason = fmt::format("The response for {}/{}/{} is not formatted as a compact binary object"sv,
m_ProjectStoreUrl,
m_Project,
m_Oplog);
Result.ErrorCode = gsl::narrow<int32_t>(HttpResponseCode::InternalServerError);
return Result;
}
CbArrayView NeedsArray = ResponseObject["need"sv].AsArrayView();
for (CbFieldView FieldView : NeedsArray)
{
IoHash ChunkHash = FieldView.AsHash();
Result.Needs.insert(ChunkHash);
}
Result.RawHash = IoHash::HashBuffer(Payload);
return Result;
}
virtual SaveAttachmentResult SaveAttachment(const CompositeBuffer& Payload, const IoHash& RawHash) override
{
std::string SaveRequest = fmt::format("/{}/oplog/{}/{}"sv, m_Project, m_Oplog, RawHash);
HttpClient::Response Response = m_Client.Post(SaveRequest, Payload, ZenContentType::kCompressedBinary);
SaveAttachmentResult Result = SaveAttachmentResult{ConvertResult(Response)};
if (Result.ErrorCode)
{
Result.Reason = fmt::format("Failed saving oplog attachment to {}/{}/{}/{}. Reason: '{}'",
m_ProjectStoreUrl,
m_Project,
m_Oplog,
RawHash,
Result.Reason);
}
return Result;
}
virtual SaveAttachmentsResult SaveAttachments(const std::vector<SharedBuffer>& Chunks) override
{
CbPackage RequestPackage;
{
CbObjectWriter RequestWriter;
RequestWriter.AddString("method"sv, "putchunks"sv);
RequestWriter.BeginArray("chunks"sv);
{
for (const SharedBuffer& Chunk : Chunks)
{
IoHash RawHash;
uint64_t RawSize;
CompressedBuffer Compressed = CompressedBuffer::FromCompressed(Chunk, RawHash, RawSize);
RequestWriter.AddHash(RawHash);
RequestPackage.AddAttachment(CbAttachment(Compressed, RawHash));
}
}
RequestWriter.EndArray(); // "chunks"
RequestPackage.SetObject(RequestWriter.Save());
}
std::string SaveRequest = fmt::format("/{}/oplog/{}/rpc"sv, m_Project, m_Oplog);
HttpClient::Response Response = m_Client.Post(SaveRequest, RequestPackage);
SaveAttachmentsResult Result = SaveAttachmentsResult{ConvertResult(Response)};
if (Result.ErrorCode)
{
Result.Reason = fmt::format("Failed saving {} oplog attachments to {}/{}/{}. Reason: '{}'",
Chunks.size(),
m_ProjectStoreUrl,
m_Project,
m_Oplog,
Result.Reason);
}
return Result;
}
virtual LoadAttachmentsResult LoadAttachments(const std::vector<IoHash>& RawHashes) override
{
std::string LoadRequest = fmt::format("/{}/oplog/{}/rpc"sv, m_Project, m_Oplog);
CbObject Request;
{
CbObjectWriter RequestWriter;
RequestWriter.AddString("method"sv, "getchunks"sv);
RequestWriter.BeginArray("chunks"sv);
{
for (const IoHash& RawHash : RawHashes)
{
RequestWriter.AddHash(RawHash);
}
}
RequestWriter.EndArray(); // "chunks"
Request = RequestWriter.Save();
}
HttpClient::Response Response = m_Client.Post(LoadRequest, Request, HttpClient::Accept(ZenContentType::kCbPackage));
LoadAttachmentsResult Result = LoadAttachmentsResult{ConvertResult(Response)};
if (Result.ErrorCode)
{
Result.Reason = fmt::format("Failed fetching {} oplog attachments from {}/{}/{}. Reason: '{}'",
RawHashes.size(),
m_ProjectStoreUrl,
m_Project,
m_Oplog,
Result.Reason);
}
else
{
CbPackage Package = Response.AsPackage();
std::span<const CbAttachment> Attachments = Package.GetAttachments();
Result.Chunks.reserve(Attachments.size());
for (const CbAttachment& Attachment : Attachments)
{
Result.Chunks.emplace_back(
std::pair<IoHash, CompressedBuffer>{Attachment.GetHash(), Attachment.AsCompressedBinary().MakeOwned()});
}
}
return Result;
};
virtual FinalizeResult FinalizeContainer(const IoHash&) override { return FinalizeResult{Result{}}; }
virtual LoadContainerResult LoadContainer() override
{
std::string LoadRequest = fmt::format("/{}/oplog/{}/load"sv, m_Project, m_Oplog);
HttpClient::Response Response = m_Client.Get(LoadRequest, HttpClient::Accept(ZenContentType::kCbObject));
LoadContainerResult Result = LoadContainerResult{ConvertResult(Response)};
if (Result.ErrorCode)
{
Result.Reason = fmt::format("Failed fetching oplog container from {}/{}/{}. Reason: '{}'",
m_ProjectStoreUrl,
m_Project,
m_Oplog,
Result.Reason);
}
else
{
Result.ContainerObject = Response.AsObject();
if (!Result.ContainerObject)
{
Result.Reason = fmt::format("The response for {}/{}/{} is not formatted as a compact binary object"sv,
m_ProjectStoreUrl,
m_Project,
m_Oplog);
Result.ErrorCode = gsl::narrow<int32_t>(HttpResponseCode::InternalServerError);
}
}
return Result;
}
virtual LoadContainerResult LoadBaseContainer() override
{
return LoadContainerResult{{.ErrorCode = static_cast<int>(HttpResponseCode::NoContent)}};
}
virtual HasAttachmentsResult HasAttachments(const std::span<IoHash>) override
{
// For zen as remote store we never store blocks so we should never get here
ZEN_ASSERT(false);
return HasAttachmentsResult{};
}
virtual LoadAttachmentResult LoadAttachment(const IoHash& RawHash) override
{
std::string LoadRequest = fmt::format("/{}/oplog/{}/{}"sv, m_Project, m_Oplog, RawHash);
HttpClient::Response Response =
m_Client.Download(LoadRequest, m_TempFilePath, HttpClient::Accept(ZenContentType::kCompressedBinary));
LoadAttachmentResult Result = LoadAttachmentResult{ConvertResult(Response)};
if (!Result.ErrorCode)
{
Result.Bytes = Response.ResponsePayload;
Result.Bytes.MakeOwned();
}
if (!Result.ErrorCode)
{
Result.Reason = fmt::format("Failed fetching oplog attachment from {}/{}/{}/{}. Reason: '{}'",
m_ProjectStoreUrl,
m_Project,
m_Oplog,
RawHash,
Result.Reason);
}
return Result;
}
private:
static Result ConvertResult(const HttpClient::Response& Response, const std::string_view ErrorPrefix = ""sv)
{
if (Response.Error)
{
return {.ErrorCode = Response.Error.value().ErrorCode,
.ElapsedSeconds = Response.ElapsedSeconds,
.Reason = Response.ErrorMessage(""),
.Text = Response.ToText()};
}
if (!Response.IsSuccess())
{
return {.ErrorCode = static_cast<int32_t>(Response.StatusCode),
.ElapsedSeconds = Response.ElapsedSeconds,
.Reason = Response.ErrorMessage(ErrorPrefix),
.Text = Response.ToText()};
}
return {.ErrorCode = 0, .ElapsedSeconds = Response.ElapsedSeconds};
}
const std::string m_HostAddress;
const std::string m_ProjectStoreUrl;
const std::string m_Project;
const std::string m_Oplog;
const std::filesystem::path m_TempFilePath;
HttpClient m_Client;
};
std::shared_ptr<RemoteProjectStore>
CreateZenRemoteStore(const ZenRemoteStoreOptions& Options, const std::filesystem::path& TempFilePath)
{
std::string Url = Options.Url;
if (Url.find("://"sv) == std::string::npos)
{
// Assume http URL
Url = fmt::format("http://{}"sv, Url);
}
std::shared_ptr<RemoteProjectStore> RemoteStore =
std::make_shared<ZenRemoteStore>(Url, Options.ProjectId, Options.OplogId, TempFilePath);
return RemoteStore;
}
} // namespace zen
|