aboutsummaryrefslogtreecommitdiff
path: root/libbrep/package.hxx
blob: ee517788c186aab621aed18223fde12386d6cde1 (plain)
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
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
// file      : libbrep/package.hxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#ifndef LIBBREP_PACKAGE_HXX
#define LIBBREP_PACKAGE_HXX

#include <map>
#include <chrono>

#include <odb/core.hxx>
#include <odb/nested-container.hxx>

#include <libbrep/types.hxx>
#include <libbrep/utility.hxx>

#include <libbrep/common.hxx> // Must be included last (see assert).

// Used by the data migration entries.
//
#define LIBBREP_PACKAGE_SCHEMA_VERSION_BASE 4

#pragma db model version(LIBBREP_PACKAGE_SCHEMA_VERSION_BASE, 4, closed)

namespace brep
{
  // @@ Might make sense to put some heavy members (e.g., description,
  //    containers) into a separate section.
  //
  // @@ Not sure there is a benefit in making tags a full-blown container
  //    (i.e., a separate table). Maybe provide a mapping of vector<string>
  //    to TEXT as a comma-separated list.
  //

  // Forward declarations.
  //
  class repository;
  class package;

  // priority
  //
  using bpkg::priority;

  #pragma db value(priority) definition
  #pragma db member(priority::value) column("")

  // url
  //
  using bpkg::url;

  #pragma db value(url) definition
  #pragma db member(url::value) virtual(string) before access(this) column("")

  // email
  //
  using bpkg::email;

  #pragma db value(email) definition
  #pragma db member(email::value) virtual(string) before access(this) column("")

  // licenses
  //
  using bpkg::licenses;
  using license_alternatives = vector<licenses>;

  #pragma db value(licenses) definition

  // dependencies
  //
  using bpkg::dependency_constraint;

  #pragma db value(dependency_constraint) definition

  // Notes:
  //
  // 1. Will the package be always resolvable? What if it is in
  //    another repository (i.e., a "chained" third-party repo).
  //    The question is then whether we will load such "third-
  //    party packages" (i.e., packages that are not in our
  //    repository). If the answer is yes, then we can have
  //    a pointer here. If the answer is no, then we can't.
  //    Also, if the answer is yes, we probably don't need to
  //    load as much information as for "our own" packages. We
  //    also shouldn't be showing them in search results, etc.
  //    I think all we need is to know which repository this
  //    package comes from so that we can tell the user. How are
  //    we going to capture this? Poly hierarchy of packages?
  //
  // 2. I believe we don't need to use a weak pointer here since
  //    there should be no package dependency cycles (and therefore
  //    ownership cycles).
  //
  // 3. Actually there can be dependency cycle as dependency referes not to
  //    just a package but a specific version, so for the same pair of
  //    packages dependency for different versions can have an opposite
  //    directions. The possible solution is instead of a package we point
  //    to the earliest version that satisfies the constraint. But this
  //    approach requires to ensure no cycles exist before instantiating
  //    package objects which in presense of "foreign" packages can be
  //    tricky. Can stick to just a package name until get some clarity on
  //    "foreign" package resolution.
  //
  // 4. As we left just the package class the dependency resolution come to
  //    finding the best version matching package object. The question is
  //    if to resolve dependencies on the loading phase or in the WEB interface
  //    when required. The arguments in favour of doing that during loading
  //    phase are:
  //
  //    - WEB interface get offloaded from a possibly expensive queries
  //      which otherwise have to be executed multiple times for the same
  //      dependency no matter the result would be the same.
  //
  //    - No need to complicate persisted object model with repository
  //      relations otherwise required just for dependency resolution.
  //

  #pragma db value
  struct dependency
  {
    using package_type = brep::package;

    lazy_shared_ptr<package_type> package;
    optional<dependency_constraint> constraint;

    // Prerequisite package name.
    //
    string
    name () const;

    // Database mapping.
    //
    #pragma db member(package) column("") not_null
    #pragma db member(constraint) column("")
  };

  ostream&
  operator<< (ostream&, const dependency&);

  bool
  operator== (const dependency&, const dependency&);

  bool
  operator!= (const dependency&, const dependency&);

  #pragma db value
  class dependency_alternatives: public vector<dependency>
  {
  public:
    bool conditional;
    bool buildtime;
    string comment;

    dependency_alternatives () = default;
    dependency_alternatives (bool d, bool b, string c)
        : conditional (d), buildtime (b), comment (move (c)) {}
  };

  using dependencies = vector<dependency_alternatives>;

  // requirements
  //
  using bpkg::requirement_alternatives;
  using requirements = vector<requirement_alternatives>;

  #pragma db value(requirement_alternatives) definition

  // repository_location
  //
  using bpkg::repository_location;

  #pragma db map type(repository_location) as(string)     \
    to((?).string ()) from(brep::repository_location (?))

  #pragma db value
  class certificate
  {
  public:
    string fingerprint;  // SHA256 fingerprint.
    string name;         // CN component of Subject.
    string organization; // O component of Subject.
    string email;        // email: in Subject Alternative Name.
    string pem;          // PEM representation.
  };

  #pragma db object pointer(shared_ptr) session
  class repository
  {
  public:
    using email_type = brep::email;
    using certificate_type = brep::certificate;

    // Create internal repository.
    //
    repository (repository_location,
                string display_name,
                repository_location cache_location,
                optional<certificate_type>,
                uint16_t priority);

    // Create external repository.
    //
    explicit
    repository (repository_location);

    string name; // Object id (canonical name).
    repository_location location;
    string display_name;

    // The order in the internal repositories configuration file, starting from
    // 1. 0 for external repositories.
    //
    uint16_t priority;

    optional<string> url;

    // Present only for internal repositories.
    //
    optional<email_type> email;
    optional<string> summary;
    optional<string> description;

    // Location of the repository local cache. Non empty for internal
    // repositories and external ones with a filesystem path location.
    //
    repository_location cache_location;

    // Present only for internal signed repositories.
    //
    optional<certificate_type> certificate;

    // Initialized with timestamp_nonexistent by default.
    //
    timestamp packages_timestamp;

    // Initialized with timestamp_nonexistent by default.
    //
    timestamp repositories_timestamp;

    bool internal;
    vector<lazy_weak_ptr<repository>> complements;
    vector<lazy_weak_ptr<repository>> prerequisites;

    // Database mapping.
    //
    #pragma db member(name) id

    #pragma db member(location)                                  \
      set(this.location = std::move (?);                         \
          assert (this.name == this.location.canonical_name ()))

    #pragma db member(complements) id_column("repository") \
      value_column("complement") value_not_null

    #pragma db member(prerequisites) id_column("repository") \
      value_column("prerequisite") value_not_null

  private:
    friend class odb::access;
    repository () = default;
  };

  // The 'to' expression calls the PostgreSQL to_tsvector(weighted_text)
  // function overload (package-extra.sql). Since we are only interested
  // in "write-only" members of this type, make the 'from' expression
  // always return empty string (we still have to work the placeholder
  // in to keep overprotective ODB happy).
  //
  #pragma db map type("tsvector") as("TEXT")                       \
    to("to_tsvector((?)::weighted_text)") from("COALESCE('',(?))")

  // C++ type for weighted PostgreSQL tsvector.
  //
  #pragma db value type("tsvector")
  struct weighted_text
  {
    string a;
    string b;
    string c;
    string d;
  };

  #pragma db object pointer(shared_ptr) session
  class package
  {
  public:
    using repository_type = brep::repository;
    using version_type = brep::version;
    using priority_type = brep::priority;
    using license_alternatives_type = brep::license_alternatives;
    using url_type = brep::url;
    using email_type = brep::email;
    using dependencies_type = brep::dependencies;
    using requirements_type = brep::requirements;

    // Create internal package object.
    //
    package (string name,
             version_type,
             priority_type,
             string summary,
             license_alternatives_type,
             strings tags,
             optional<string> description,
             string changes,
             url_type,
             optional<url_type> package_url,
             email_type,
             optional<email_type> package_email,
             optional<email_type> build_email,
             dependencies_type,
             requirements_type,
             optional<path> location,
             optional<string> sha256sum,
             shared_ptr<repository_type>);

    // Create external package object.
    //
    // External repository packages can appear on the WEB interface only in
    // dependency list in the form of a link to the corresponding WEB page.
    // The only package information required to compose such a link is the
    // package name, version, and repository location.
    //
    package (string name, version_type, shared_ptr<repository_type>);

    bool
    internal () const noexcept {return internal_repository != nullptr;}

    // Manifest data.
    //
    package_id id;
    upstream_version version;
    priority_type priority;
    string summary;
    license_alternatives_type license_alternatives;
    strings tags;
    optional<string> description;
    string changes;
    url_type url;
    optional<url_type> package_url;
    email_type email;
    optional<email_type> package_email;
    optional<email_type> build_email;
    dependencies_type dependencies;
    requirements_type requirements;
    lazy_shared_ptr<repository_type> internal_repository;

    // Path to the package file. Present only for internal packages.
    //
    optional<path> location;

    // Present only for internal packages.
    //
    optional<string> sha256sum;

    vector<lazy_shared_ptr<repository_type>> other_repositories;

    // Database mapping.
    //
    #pragma db member(id) id column("")
    #pragma db member(version) set(this.version.init (this.id.version, (?)))

    // license
    //
    using _license_key = odb::nested_key<licenses>;
    using _licenses_type = std::map<_license_key, string>;

    #pragma db value(_license_key)
    #pragma db member(_license_key::outer) column("alternative_index")
    #pragma db member(_license_key::inner) column("index")

    #pragma db member(license_alternatives) id_column("") value_column("")
    #pragma db member(licenses)                                       \
      virtual(_licenses_type)                                         \
      after(license_alternatives)                                     \
      get(odb::nested_get (this.license_alternatives))                \
      set(odb::nested_set (this.license_alternatives, std::move (?))) \
      id_column("") key_column("") value_column("license")

    // tags
    //
    #pragma db member(tags) id_column("") value_column("tag")

    // dependencies
    //
    using _dependency_key = odb::nested_key<dependency_alternatives>;
    using _dependency_alternatives_type =
               std::map<_dependency_key, dependency>;

    #pragma db value(_dependency_key)
    #pragma db member(_dependency_key::outer) column("dependency_index")
    #pragma db member(_dependency_key::inner) column("index")

    #pragma db member(dependencies) id_column("") value_column("")
    #pragma db member(dependency_alternatives)                \
      virtual(_dependency_alternatives_type)                  \
      after(dependencies)                                     \
      get(odb::nested_get (this.dependencies))                \
      set(odb::nested_set (this.dependencies, std::move (?))) \
      id_column("") key_column("") value_column("dep_")

    // requirements
    //
    using _requirement_key = odb::nested_key<requirement_alternatives>;
    using _requirement_alternatives_type =
               std::map<_requirement_key, string>;

    #pragma db value(_requirement_key)
    #pragma db member(_requirement_key::outer) column("requirement_index")
    #pragma db member(_requirement_key::inner) column("index")

    #pragma db member(requirements) id_column("") value_column("")
    #pragma db member(requirement_alternatives)               \
      virtual(_requirement_alternatives_type)                 \
      after(requirements)                                     \
      get(odb::nested_get (this.requirements))                \
      set(odb::nested_set (this.requirements, std::move (?))) \
      id_column("") key_column("") value_column("id")

    // other_repositories
    //
    #pragma db member(other_repositories)                  \
      id_column("") value_column("repository") value_not_null

    // search_index
    //
    #pragma db member(search_index) virtual(weighted_text) null \
      access(search_text)

    #pragma db index method("GIN") member(search_index)

  private:
    friend class odb::access;
    package () = default;

    // Save keywords, summary, description, and changes to weighted_text
    // a, b, c, d members, respectively. So a word found in keywords will
    // have a higher weight than if it's found in the summary.
    //
    weighted_text
    search_text () const;

    // Noop as search_index is a write-only member.
    //
    void
    search_text (const weighted_text&) {}
  };

  // Package search query matching rank.
  //
  #pragma db view query("/*CALL*/ SELECT * FROM search_latest_packages(?)")
  struct latest_package_search_rank
  {
    package_id id;
    double rank;
  };

  #pragma db view \
    query("/*CALL*/ SELECT count(*) FROM search_latest_packages(?)")
  struct latest_package_count
  {
    size_t result;

    operator size_t () const {return result;}
  };

  #pragma db view query("/*CALL*/ SELECT * FROM search_packages(?)")
  struct package_search_rank
  {
    package_id id;
    double rank;
  };

  #pragma db view  query("/*CALL*/ SELECT count(*) FROM search_packages(?)")
  struct package_count
  {
    size_t result;

    operator size_t () const {return result;}
  };

  #pragma db view query("/*CALL*/ SELECT * FROM latest_package(?)")
  struct latest_package
  {
    package_id id;
  };

  #pragma db view object(package) \
    object(repository: package::internal_repository)
  struct package_version
  {
    package_id id;
    upstream_version version;

    // Database mapping.
    //
    #pragma db member(version) set(this.version.init (this.id.version, (?)))
  };
}

#endif // LIBBREP_PACKAGE_HXX