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Showing content from http://www.ncbi.nlm.nih.gov/IEB/ToolBox/CPP_DOC/doxyhtml/netstorage__gc__database_8cpp_source.html below:

NCBI C++ ToolKit: src/app/netstorage/utils/netstorage_gc_database.cpp Source File

48

: m_Verbose(

verbose

), m_Db(

NULL

), m_Timeout(timeout, 0)

64

cout <<

"Connecting to the NetStorage meta info database..." 68

cout <<

"Connected"

<< endl;

70

cerr <<

"Error connecting to the NetStorage meta info database"

<< endl;

79

cout <<

"Closing the NetStorage meta info database connection..." 83

cout <<

"Closed"

<< endl;

91

cout <<

"Getting the application lock..."

<< endl;

96  query

.SetParameter(

"@Resource"

,

"GarbageCollectorLock"

);

97  query

.SetParameter(

"@LockMode"

,

"Exclusive"

);

98  query

.SetParameter(

"@LockOwner"

,

"Session"

);

99  query

.SetParameter(

"@LockTimeout"

, 0);

102  int

status =

query

.GetStatus();

107  "sp_getapplock return code: "

+

109

}

catch

(

const

exception & exc) {

110

cerr <<

"Error getting the application lock: "

<< exc.what() << endl;

113

cerr <<

"Unknown error getting the application lock " 114  "for the database"

<< endl;

119

cout <<

"Got"

<< endl;

126

cout <<

"Releasing the application lock..."

<< endl;

131  query

.SetParameter(

"@Resource"

,

"GarbageCollectorLock"

);

132  query

.SetParameter(

"@LockOwner"

,

"Session"

);

135  if

(

query

.GetStatus() != 0)

137  "Error releasing the application lock"

);

140

cerr << ex.

what

() << endl;

144

cerr <<

"Exception while releasing the application lock " 145  "for the database: "

<< ex.

what

() << endl;

147

}

catch

(

const

std::exception & ex) {

149

cerr <<

"Exception while releasing the application lock " 150  "for the database: "

<< ex.

what

() << endl;

153  string msg

=

"Unknown error of releasing the application lock " 161

cout <<

"Released"

<< endl;

168

cout <<

"Reading the NetStorage meta info " 169  "database connection parameters..."

<< endl;

174  "database"

,

"password"

,

178

cout <<

"Read"

<< endl;

194

cout <<

"Creating CDatabase (uri: "

<< uri <<

")..."

<< endl;

197

cout <<

"Created"

<< endl;

204

vector<string> candidates;

205  string stmt

=

"SELECT object_loc FROM Objects " 206  "WHERE tm_expiration IS NOT NULL AND " 207  "tm_expiration < GETDATE()"

;

210

cout <<

"Retrieving the expired objects from the NetStorage meta info " 211  "database..."

<< endl;

218

candidates.push_back(

row

[

"object_loc"

].AsString());

221

cerr <<

"Error retrieving the expired objects from the NetStorage meta " 222  "info database"

<< endl;

227

cout <<

"Retrieved "

<< candidates.size()

228

<<

" expired object(s)"

<< endl;

236  string stmt

=

"SELECT version FROM Versions " 237  "WHERE name = 'db_structure'"

;

241

cout <<

"Retrieving the version of the NetStorage meta info " 242  "database structure..."

<< endl;

250  string msg

=

"Too many NetStorage meta info " 251  "database structure versions"

;

256

db_ver =

row

[

"version"

].AsInt4();

261

cerr <<

"Error retrieving the version of the NetStorage meta info " 262  "database structure..."

<< endl;

267  string msg

=

"Cannot find the version of the NetStorage meta info " 268  "database structure"

;

274

cout <<

"Retrieved: "

<< db_ver << endl;

281  const string

& hit_id)

287

cout <<

"Removing attributes of object "

<< locator << endl;

289  string stmt

=

"DELETE FROM AttrValues WHERE object_id IN (" 290  "SELECT object_id FROM Objects WHERE object_loc='"

+

297  ctx

->SetRequestID();

299  ctx

->SetHitID(hit_id);

301

.Print(

"action"

,

"meta_attributes_remove"

)

302

.Print(

"locator"

, locator);

307  ctx

->SetRequestStatus(200);

314  ctx

->SetRequestStatus(500);

319

cerr <<

"Exception while removing attributes of object " 322

}

catch

(

const

std::exception & ex ) {

325  ctx

->SetRequestStatus(500);

330

cerr <<

"std::exception while removing attributes of object " 336  ctx

->SetRequestStatus(500);

341

cerr <<

"Unknown exception while removing attributes of object " 348

cout <<

"Removing the object record for "

<< locator << endl;

350  stmt

=

"DELETE FROM Objects WHERE object_loc='"

+ locator +

"'"

;

355  ctx

->SetRequestID();

357  ctx

->SetHitID(hit_id);

359

.Print(

"action"

,

"meta_object_remove"

)

360

.Print(

"locator"

, locator);

365  ctx

->SetRequestStatus(200);

372  ctx

->SetRequestStatus(500);

377

cerr <<

"Exception while removing the object record for " 380

}

catch

(

const

std::exception & ex ) {

383  ctx

->SetRequestStatus(500);

388

cerr <<

"std::exception while removing the object record for " 394  ctx

->SetRequestStatus(500);

399

cerr <<

"Unknown exception while removing the object record for "

Database connection object.

void Close(void)

Close database object.

void Connect(void)

Explicitly (re)connect to the database server.

CQuery NewQuery(void)

Get new CQuery object for this database.

SDbAccessInfo m_DbAccessInfo

CNetStorageGCDatabase(const CNcbiRegistry &reg, bool verbose, unsigned int timeout)

void x_CreateDatabase(const CNcbiRegistry &reg)

void RemoveObject(const string &locator, bool dryrun, const string &hit_id)

void x_ReadDbAccessInfo(const CNcbiRegistry &reg)

void ReleaseAppLock(void)

vector< string > GetGCCandidates(void)

~CNetStorageGCDatabase(void)

int GetDBStructureVersion(void)

Object used to execute queries and stored procedures on the database server and retrieve result sets.

Convenience class to initialize database connection parameters from URL-like strings and/or applicati...

Include a standard set of the NCBI C++ Toolkit most basic headers.

#define ITERATE(Type, Var, Cont)

ITERATE macro to sequence through container elements.

void PrintRequestStop(void)

Print request stop message (for request-driven applications)

CDiagContext & GetDiagContext(void)

Get diag context instance.

static void SetRequestContext(CRequestContext *ctx)

Shortcut to CDiagContextThreadData::GetThreadData().SetRequestContext()

void PrintRequestStart(const string &message)

Print request start message (for request-driven applications)

#define ERR_POST(message)

Error posting with file, line number information but without error codes.

#define NCBI_THROW(exception_class, err_code, message)

Generic macro to throw an exception, given the exception class, error code and message string.

virtual const char * what(void) const noexcept

Standard report (includes full backlog).

string GetEncryptedString(const string &section, const string &name, TFlags flags=0, const string &password=kEmptyStr) const

Get a value that was (potentially) stored encrypted.

virtual string GetString(const string &section, const string &name, const string &default_value, TFlags flags=0) const

Get the parameter string value.

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

static enable_if< is_arithmetic< TNumeric >::value||is_convertible< TNumeric, Int8 >::value, string >::type NumericToString(TNumeric value, TNumToStringFlags flags=0, int base=10)

Convert numeric value to string.

Defines NCBI C++ diagnostic APIs, classes, and macros.

const string k_UnknownException

Defines CRequestContext class for NCBI C++ diagnostic API.

Defines NCBI C++ secure resources API.

static SLJIT_INLINE sljit_ins msg(sljit_gpr r, sljit_s32 d, sljit_gpr x, sljit_gpr b)

#define row(bind, expected)

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