Qore ConnectionProvider Module Reference 1.8
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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
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 = False;
66
68 bool monitor;
69
71 date updated;
72
74 bool loopback = False;
75
77 static *code post_processing;
78
80 bool enabled = True;
81
83 bool locked = False;
84
86 bool debug_data = False;
87
89 hash<auto> tags = {};
90
93
96
99
102
104 hash<auto> internal_info;
105
107
116 deprecated
118 string desc,
119 string url,
120 bool monitor,
121 *hash opts,
122 hash urlh,
123 *string safe_url,
124 *bool enabled) {
125 // remove "enabled" option from option hash, if any
126 *bool opt_enabled = remove opts.enabled;
127 hash<auto> attributes = {
128 "monitor": monitor,
129 "enabled": enabled ?? opt_enabled ?? True,
130 };
131 constructorInit(name, desc, url, attributes, opts ?? {});
132 }
133
135
152 constructor(string name, string description, string url, hash<auto> attributes = {}, hash<auto> options = {});
153
154
156
160 string getName();
161
162
164
169
170
172
176 string getUrl();
177
178
180
184 string getSafeUrl();
185
186
188
192 hash<PingInfo> ping(bool throw_exception = False);
193
194
196protected:
197 hash<PingInfo> pingIntern(hash<PingInfo> rv);
198public:
199
200
202
208 hash<ConnectionInfo> getInfo(bool with_password = False);
209
210
212
217 hash<ConnectionInfo> getInfo(*hash<auto> opts);
218
219
221
225 hash<auto> getExtendedInfo(*hash<auto> opts);
226
227
229
231 hash<ConfigInfo> getConfigHash();
232
233
235 hash<ConnectionSchemeInfo> getConnectionSchemeInfo();
236
237
239 *hash<auto> getOptions();
240
241
243 *hash<auto> getRuntimeOptions();
244
245
247 *hash<auto> getDefaultOptions();
248
249
251 *hash<auto> getRealOptions();
252
253
255
257 object get(bool connect = True, *hash<auto> rtopts);
258
259
261
264
265
267 hash<auto> getTags();
268
269
271 auto getTag(string tag);
272
273
275
277 auto getTagEx(string tag);
278
279
281
292 AbstractDataProvider getDataProvider();
293
294
296
306
307
309
321
322
324
333
334
336
340 object getPollImpl();
341
342
344 handlePingSuccess(date delta);
345
346
348 handlePingFailed(date delta, hash<ExceptionInfo> ex);
349
350
352 handlePingFailed(date delta, string err);
353
354
356
358protected:
360public:
361
362
364
372protected:
373 hash<UrlInfo> parseUrl(string url);
374public:
375
376
378
391protected:
392 string getSafeUrl(hash<auto> urlh);
393public:
394
395
397
404protected:
405 hash<auto> validateOptions(hash<auto> options);
406public:
407
408
410
413private:
414 constructorInit(string name, string description, string url, hash<auto> attributes, hash<auto> options);
415public:
416
417
419protected:
421public:
422
423
425 abstract string getType();
426
428
434protected:
435 abstract object getImpl(bool connect = True, *hash<auto> rtopts);
436public:
437};
438}; // 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:83
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
*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
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
Definition: AbstractConnection.qc.dox.h:104
*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:101
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:89
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:80
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.
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:86
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
*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
Definition: AbstractConnection.qc.dox.h:117
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
constructor(string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
creates the AbstractConnection object
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:92
static *code post_processing
optional code for default post-processing of objects created by getImpl(); must take the connection o...
Definition: AbstractConnection.qc.dox.h:77
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:98
bool children_can_support_records
if the data provider or any of its children support records
Definition: AbstractConnection.qc.dox.h:95
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
handlePingSuccess(date delta)
Handles a successful ping operation on the connection.
The ConnectionProvider namespace.
Definition: AbstractConnection.qc.dox.h:28