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
|
#include <Common/ProxyConfigurationResolverProvider.h>
#include <Common/EnvironmentProxyConfigurationResolver.h>
#include <Common/Exception.h>
#include <Common/ProxyListConfigurationResolver.h>
#include <Common/RemoteProxyConfigurationResolver.h>
#include <Common/StringUtils/StringUtils.h>
#include <Common/logger_useful.h>
#include <Interpreters/Context.h>
namespace DB
{
namespace ErrorCodes
{
extern const int BAD_ARGUMENTS;
}
namespace
{
std::shared_ptr<ProxyConfigurationResolver> getRemoteResolver(
const String & config_prefix, const Poco::Util::AbstractConfiguration & configuration)
{
auto endpoint = Poco::URI(configuration.getString(config_prefix + ".endpoint"));
auto proxy_scheme = configuration.getString(config_prefix + ".proxy_scheme");
if (proxy_scheme != "http" && proxy_scheme != "https")
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Only HTTP/HTTPS schemas allowed in proxy resolver config: {}", proxy_scheme);
auto proxy_port = configuration.getUInt(config_prefix + ".proxy_port");
auto cache_ttl = configuration.getUInt(config_prefix + ".proxy_cache_time", 10);
LOG_DEBUG(&Poco::Logger::get("ProxyConfigurationResolverProvider"), "Configured remote proxy resolver: {}, Scheme: {}, Port: {}",
endpoint.toString(), proxy_scheme, proxy_port);
return std::make_shared<RemoteProxyConfigurationResolver>(endpoint, proxy_scheme, proxy_port, cache_ttl);
}
std::shared_ptr<ProxyConfigurationResolver> getRemoteResolver(
ProxyConfiguration::Protocol protocol, const String & config_prefix, const Poco::Util::AbstractConfiguration & configuration)
{
std::vector<String> keys;
configuration.keys(config_prefix, keys);
std::vector<Poco::URI> uris;
for (const auto & key : keys)
{
if (startsWith(key, "resolver"))
{
auto prefix_with_key = config_prefix + "." + key;
auto proxy_scheme_config_string = prefix_with_key + ".proxy_scheme";
auto config_protocol = configuration.getString(proxy_scheme_config_string);
if (ProxyConfiguration::Protocol::ANY == protocol || config_protocol == ProxyConfiguration::protocolToString(protocol))
{
return getRemoteResolver(prefix_with_key, configuration);
}
}
}
return nullptr;
}
auto extractURIList(const String & config_prefix, const Poco::Util::AbstractConfiguration & configuration)
{
std::vector<String> keys;
configuration.keys(config_prefix, keys);
std::vector<Poco::URI> uris;
for (const auto & key : keys)
{
if (startsWith(key, "uri"))
{
Poco::URI proxy_uri(configuration.getString(config_prefix + "." + key));
if (proxy_uri.getScheme() != "http" && proxy_uri.getScheme() != "https")
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Only HTTP/HTTPS schemas allowed in proxy uri: {}", proxy_uri.toString());
if (proxy_uri.getHost().empty())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Empty host in proxy uri: {}", proxy_uri.toString());
uris.push_back(proxy_uri);
LOG_DEBUG(&Poco::Logger::get("ProxyConfigurationResolverProvider"), "Configured proxy: {}", proxy_uri.toString());
}
}
return uris;
}
std::shared_ptr<ProxyConfigurationResolver> getListResolverNewSyntax(
ProxyConfiguration::Protocol protocol,
const String & config_prefix,
const Poco::Util::AbstractConfiguration & configuration
)
{
std::vector<Poco::URI> uris;
bool include_http_uris = ProxyConfiguration::Protocol::ANY == protocol || ProxyConfiguration::Protocol::HTTP == protocol;
if (include_http_uris && configuration.has(config_prefix + ".http"))
{
auto http_uris = extractURIList(config_prefix + ".http", configuration);
uris.insert(uris.end(), http_uris.begin(), http_uris.end());
}
bool include_https_uris = ProxyConfiguration::Protocol::ANY == protocol || ProxyConfiguration::Protocol::HTTPS == protocol;
if (include_https_uris && configuration.has(config_prefix + ".https"))
{
auto https_uris = extractURIList(config_prefix + ".https", configuration);
uris.insert(uris.end(), https_uris.begin(), https_uris.end());
}
return uris.empty() ? nullptr : std::make_shared<ProxyListConfigurationResolver>(uris);
}
std::shared_ptr<ProxyConfigurationResolver> getListResolverOldSyntax(
const String & config_prefix,
const Poco::Util::AbstractConfiguration & configuration
)
{
auto uris = extractURIList(config_prefix, configuration);
return uris.empty() ? nullptr : std::make_shared<ProxyListConfigurationResolver>(uris);
}
std::shared_ptr<ProxyConfigurationResolver> getListResolver(
ProxyConfiguration::Protocol protocol, const String & config_prefix, const Poco::Util::AbstractConfiguration & configuration
)
{
std::vector<String> keys;
configuration.keys(config_prefix, keys);
bool new_setting_syntax = std::find_if(
keys.begin(),
keys.end(),
[](const String & key)
{
return startsWith(key, "http") || startsWith(key, "https");
}) != keys.end();
return new_setting_syntax ? getListResolverNewSyntax(protocol, config_prefix, configuration)
: getListResolverOldSyntax(config_prefix, configuration);
}
}
std::shared_ptr<ProxyConfigurationResolver> ProxyConfigurationResolverProvider::get(Protocol protocol)
{
auto context = Context::getGlobalContextInstance();
chassert(context);
if (auto resolver = getFromSettings(protocol, "", context->getConfigRef()))
{
return resolver;
}
return std::make_shared<EnvironmentProxyConfigurationResolver>(protocol);
}
std::shared_ptr<ProxyConfigurationResolver> ProxyConfigurationResolverProvider::getFromSettings(
Protocol protocol,
const String & config_prefix,
const Poco::Util::AbstractConfiguration & configuration
)
{
auto proxy_prefix = config_prefix.empty() ? "proxy" : config_prefix + ".proxy";
if (configuration.has(proxy_prefix))
{
std::vector<String> config_keys;
configuration.keys(proxy_prefix, config_keys);
if (auto remote_resolver = getRemoteResolver(protocol, proxy_prefix, configuration))
{
return remote_resolver;
}
if (auto list_resolver = getListResolver(protocol, proxy_prefix, configuration))
{
return list_resolver;
}
}
return nullptr;
}
std::shared_ptr<ProxyConfigurationResolver> ProxyConfigurationResolverProvider::getFromOldSettingsFormat(
const String & config_prefix,
const Poco::Util::AbstractConfiguration & configuration
)
{
/*
* First try to get it from settings only using the combination of config_prefix and configuration.
* This logic exists for backward compatibility with old S3 storage specific proxy configuration.
* */
if (auto resolver = ProxyConfigurationResolverProvider::getFromSettings(Protocol::ANY, config_prefix, configuration))
{
return resolver;
}
/*
* In case the combination of config_prefix and configuration does not provide a resolver, try to get it from general / new settings.
* Falls back to Environment resolver if no configuration is found.
* */
return ProxyConfigurationResolverProvider::get(Protocol::ANY);
}
}
|
