Qore ConnectionProvider Module Reference 1.11
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AbstractConnection.qc.dox.h
1// -*- mode: c++; indent-tabs-mode: nil -*-
2// Qore AbstractConnection class definition
3
4/* AbstractConnection.qc Copyright 2016 - 2023 Qore Technologies, s.r.o.
5
6 Permission is hereby granted, free of charge, to any person obtaining a
7 copy of this software and associated documentation files (the "Software"),
8 to deal in the Software without restriction, including without limitation
9 the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 and/or sell copies of the Software, and to permit persons to whom the
11 Software is furnished to do so, subject to the following conditions:
12
13 The above copyright notice and this permission notice shall be included in
14 all copies or substantial portions of the Software.
15
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23*/
24
26
30
34class AbstractConnection : public Qore::Serializable, public Logger::LoggerWrapper {
35
36public:
38 string name;
39
41 string desc;
42
44 string url;
45
47 string safe_url;
48
50 *hash<auto> orig_opts;
51
53 *hash<auto> opts;
54
56 hash<auto> urlh;
57
60
62 string status = "not checked";
63
65 bool up = True;
66
68 bool monitor;
69
71 date updated;
72
74 bool loopback = False;
75
77
79 static *code post_processing;
80
82 bool enabled = True;
83
85 bool locked = False;
86
88 bool debug_data = False;
89
91 hash<auto> tags = {};
92
95
98
101
104
107
109 hash<auto> internal_info;
110
112 transient hash<auto> transient_info;
113
115
117 const CF_LOGGER = "logger";
118
120
126 const CF_UPDATE_OPTIONS = "update-options";
127
129
139 deprecated
140 constructor(string name, string desc, string url, bool monitor, *hash opts, hash urlh, *string safe_url, *bool enabled);
141
142
144
162 constructor(string name, string description, string url, hash<auto> attributes = {}, hash<auto> options = {}, *LoggerInterface logger) ;
163
164
166
170 string getName();
171
172
174
179
180
182
186 string getUrl();
187
188
190
194 string getSafeUrl();
195
196
198
202 hash<PingInfo> ping(bool throw_exception = False);
203
204
206protected:
207 hash<PingInfo> pingIntern(hash<PingInfo> rv);
208public:
209
210
212
218 hash<ConnectionInfo> getInfo(bool with_password = False);
219
220
222
227 hash<ConnectionInfo> getInfo(*hash<auto> opts);
228
229
231
233 *hash<string, bool> getFeatures();
234
235
237
241 hash<auto> getExtendedInfo(*hash<auto> opts);
242
243
245
247 hash<ConfigInfo> getConfigHash();
248
249
251 hash<ConnectionSchemeInfo> getConnectionSchemeInfo();
252
253
255 hash<ConnectionSchemeInfo> getConnectionSchemeInfoImpl();
256
257
259 *hash<auto> getOptions();
260
261
263 *hash<auto> getRuntimeOptions();
264
265
267 *hash<auto> getDefaultOptions();
268
269
271 *hash<auto> getRealOptions();
272
273
275
277 object get(bool connect = True, *hash<auto> rtopts);
278
279
281
285
286
288 hash<auto> getTags();
289
290
292 auto getTag(string tag);
293
294
296
298 auto getTagEx(string tag);
299
300
302
313 AbstractDataProvider getDataProvider();
314
315
317
327
328
330
342
343
345
354
355
357
361 object getPollImpl();
362
363
365 handlePingSuccess(date delta);
366
367
369 handlePingFailed(date delta, hash<ExceptionInfo> ex);
370
371
373 handlePingFailed(date delta, string err);
374
375
377
379protected:
381public:
382
383
385
393protected:
394 hash<UrlInfo> parseUrl(string url);
395public:
396
397
399
412protected:
413 string getSafeUrl(hash<auto> urlh);
414public:
415
416
418
425protected:
426 hash<auto> validateOptions(hash<auto> options);
427public:
428
429
431
434private:
435 constructorInit(string name, string description, string url, hash<auto> attributes, hash<auto> options);
436public:
437
438
440
444protected:
445 *hash<string, bool> getFeaturesImpl();
446public:
447
448
450protected:
452public:
453
454
456 abstract string getType();
457
459
465protected:
466 abstract object getImpl(bool connect = True, *hash<auto> rtopts);
467public:
468};
469}; // ConnectionProvider namespace
abstract base class for connections
Definition: AbstractConnection.qc.dox.h:34
string desc
connection description
Definition: AbstractConnection.qc.dox.h:41
bool locked
locked/unlocked flag
Definition: AbstractConnection.qc.dox.h:85
string getName()
Returns the connection name.
pingImpl()
performs the internal ping
hash< ConnectionInfo > getInfo(*hash< auto > opts)
returns a ConnectionInfo hash of information about the connection
hash< ConnectionInfo > getInfo(bool with_password=False)
returns a ConnectionInfo hash of information about the connection
bool hasDataProvider()
returns True if the connection returns a data provider with the getDataProvider() method
bool children_can_support_transactions
if the data provider or any of its children support transaction management
Definition: AbstractConnection.qc.dox.h:106
*hash< auto > opts
connection options
Definition: AbstractConnection.qc.dox.h:53
object getPollImpl()
Returns an unconnected object for a non-blocking poll operation.
object get(bool connect=True, *hash< auto > rtopts)
returns the underlying connection object
const CF_LOGGER
Connection feature: Logger support.
Definition: AbstractConnection.qc.dox.h:117
auto getTagEx(string tag)
returns the value of the given tag or throws an exception if the tag is not set with a value
hash< auto > internal_info
internal tags (serializable)
Definition: AbstractConnection.qc.dox.h:109
*hash< auto > orig_opts
original connection options
Definition: AbstractConnection.qc.dox.h:50
*hash< auto > getRuntimeOptions()
returns runtime options
string url
connection URL (potentially with password info)
Definition: AbstractConnection.qc.dox.h:44
bool children_can_support_messages
if the data provider or any of its children support messages
Definition: AbstractConnection.qc.dox.h:103
constructor(string name, string description, string url, hash< auto > attributes={}, hash< auto > options={}, *LoggerInterface logger)
creates the AbstractConnection object
*hash< string, bool > getFeaturesImpl()
Returns a hash of connection-defined features.
hash< auto > getExtendedInfo(*hash< auto > opts)
Returns connection info plus any extended information returned by the connection.
bool monitor
monitoring flag
Definition: AbstractConnection.qc.dox.h:68
string safe_url
"safe" URL (password information removed)
Definition: AbstractConnection.qc.dox.h:47
setChildCapabilities()
Override to set child data provider capabilities once per child class.
Qore::AbstractPollOperation startPollConnect()
Called to start the connection polling operation.
hash< auto > tags
connection tags; user-defined key-value pairs
Definition: AbstractConnection.qc.dox.h:91
string getSafeUrl(hash< auto > urlh)
creates a "safe" URL string with password information removed
bool enabled
enabled/disabled indicator flag
Definition: AbstractConnection.qc.dox.h:82
AbstractDataProvider getDataProvider()
returns a data provider object for this connection, if supported
date last_check
date/time of last check/ping
Definition: AbstractConnection.qc.dox.h:59
bool up
connection status flag; set by monitoring or explicit pings/connections
Definition: AbstractConnection.qc.dox.h:65
hash< auto > validateOptions(hash< auto > options)
performs options validation in the constructor
string getDescription()
Returns the connection description.
hash< ConnectionSchemeInfo > getConnectionSchemeInfo()
Returns a default ConnectionSchemeInfo hash.
const CF_UPDATE_OPTIONS
Connection feature: Update Options support.
Definition: AbstractConnection.qc.dox.h:126
hash< ConnectionSchemeInfo > getConnectionSchemeInfoImpl()
Override in subclasses to return a native ConnectionSchemeInfo hash.
hash< PingInfo > pingIntern(hash< PingInfo > rv)
performs the ping by executing get(); returns a PingInfo hash
bool supportsPollingApi()
returns True if the connection supports the Qore Socket-based polling API
bool debug_data
debug data flag; to be used an an indication for a higher-level implementation
Definition: AbstractConnection.qc.dox.h:88
constructorInit(string name, string description, string url, hash< auto > attributes, hash< auto > options)
Common construtor implementation.
string name
connection name
Definition: AbstractConnection.qc.dox.h:38
hash< UrlInfo > parseUrl(string url)
Parse the URL to a hash.
hash< ConfigInfo > getConfigHash()
returns a ConfigInfo hash of static configuration information about the connection
transient hash< auto > transient_info
internal transient tags (non-serializable)
Definition: AbstractConnection.qc.dox.h:112
*hash< auto > getOptions()
returns static / initialization options
hash< auto > getTags()
returns all tags associated with the connection
abstract object getImpl(bool connect=True, *hash< auto > rtopts)
this method must return the connection object corresponding to the object's configuration
deprecated constructor(string name, string desc, string url, bool monitor, *hash opts, hash urlh, *string safe_url, *bool enabled)
creates the AbstractConnection object
handlePingFailed(date delta, hash< ExceptionInfo > ex)
Handles a failed ping operation on the connection.
string getSafeUrl()
Returns the connection safe URL (without password info)
string getUrl()
Returns the connection URL.
*hash< auto > getDefaultOptions()
returns default options
auto getTag(string tag)
returns the value of the given tag or NOTHING if not present
string status
status string; in case of a connection error this string will be the error string
Definition: AbstractConnection.qc.dox.h:62
parseTextOptions()
this method is called when parsing connection file definitions from text files when loading into the ...
date updated
date/time of last update
Definition: AbstractConnection.qc.dox.h:71
bool children_can_support_apis
if the data provider or any of its children support requests (APIs)
Definition: AbstractConnection.qc.dox.h:94
static *code post_processing
optional code for default post-processing of objects created by getImpl()
Definition: AbstractConnection.qc.dox.h:79
bool loopback
set to True for loopback connections
Definition: AbstractConnection.qc.dox.h:74
bool children_can_support_observers
if the data provider or any of its children support events
Definition: AbstractConnection.qc.dox.h:100
bool children_can_support_records
if the data provider or any of its children support records
Definition: AbstractConnection.qc.dox.h:97
abstract string getType()
returns the string type name for the connection object
handlePingFailed(date delta, string err)
Handles a failed ping operation on the connection.
hash< auto > urlh
broken down URL hash (as returned by Qore::parse_url())
Definition: AbstractConnection.qc.dox.h:56
hash< PingInfo > ping(bool throw_exception=False)
returns a hash with the results of the ping operation
*hash< auto > getRealOptions()
returns options for saving the connection's configuration information
*hash< string, bool > getFeatures()
Returns a list of connection-defined features.
handlePingSuccess(date delta)
Handles a successful ping operation on the connection.
The ConnectionProvider namespace.
Definition: AbstractConnection.qc.dox.h:28