OPeNDAP Hyrax Back End Server (BES)
Updated for version 3.8.3
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mapping of key/value pairs defining different behaviors of an application. More...
#include <BESKeys.h>
Public Types | |
typedef map< string, vector < string > >::const_iterator | Keys_citer |
Public Member Functions | |
virtual void | dump (ostream &strm) const |
dumps information about this object More... | |
void | get_value (const string &s, string &val, bool &found) |
Retrieve the value of a given key, if set. More... | |
void | get_values (const string &s, vector< string > &vals, bool &found) |
Retrieve the values of a given key, if set. More... | |
Keys_citer | keys_begin () |
Keys_citer | keys_end () |
string | keys_file_name () |
void | set_key (const string &key, const string &val, bool addto=false) |
allows the user to set key/value pairs from within the application. More... | |
void | set_key (const string &pair) |
allows the user to set key/value pairs from within the application. More... | |
~BESKeys () | |
cleans up the key/value pair mapping More... | |
Protected Member Functions | |
BESKeys (const string &keys_file_name) | |
default constructor that reads loads key/value pairs from the specified file. More... | |
mapping of key/value pairs defining different behaviors of an application.
BESKeys provides a mechanism to define the behavior of an application given key/value pairs. For example, how authentication will work, database access information, level of debugging and where log files are to be located.
Key/value pairs can be loaded from an external initialization file or set within the application itself, for example from the command line.
If from a file the key/value pair is set one per line and cannot span multiple lines. Comments are allowed using the pound (#) character. For example:
# # Who is responsible for this server # BES.ServerAdministrator=dods-tech@unidata.ucar.edu # # Default server port and unix socket information and whether the server #is secure or not. # BES.ServerPort=10002 BES.ServerUnixSocket=/tmp/bes.socket BES.ServerSecure=no *
Key/value pairs can also be set by passing in a key=value string, or by passing in a key and value string to the object.
BES provides a single object for access to a single BESKeys object, TheBESKeys.
typedef map< string, vector< string > >::const_iterator BESKeys::Keys_citer |
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protected |
default constructor that reads loads key/value pairs from the specified file.
This constructor uses the specified file to load key/value pairs. This file holds different key/value pairs for the application, one key/value pair per line separated by an equal (=) sign.
key=value
Comments are allowed in the file and must begin with a pound (#) sign at the beginning of the line. No comments are allowed at the end of lines.
BESInternalFatalError | thrown if there is an error reading the initialization file or a syntax error in the file, i.e. a malformed key/value pair. |
Definition at line 77 of file BESKeys.cc.
BESKeys::~BESKeys | ( | ) |
cleans up the key/value pair mapping
Definition at line 92 of file BESKeys.cc.
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virtual |
dumps information about this object
Displays the pointer value of this instance along with all of the keys.
strm | C++ i/o stream to dump the information to |
Implements BESObj.
Definition at line 506 of file BESKeys.cc.
References BESIndent::Indent(), BESIndent::LMarg(), and BESIndent::UnIndent().
void BESKeys::get_value | ( | const string & | s, |
string & | val, | ||
bool & | found | ||
) |
Retrieve the value of a given key, if set.
This method allows the user of BESKeys to retrieve the value of the specified key. If multiple values are set then an exception is thrown.
s | The key the user is looking for |
val | The value of the key the user is looking for |
found | Set to true of the key is set or false if the key is not set. The value of a key can be set to the empty string, which is why this boolean is provided. |
BESSyntaxUserError | if multiple values are available for the specified key |
Definition at line 453 of file BESKeys.cc.
Referenced by BESInfo::add_data_from_file(), BESCache::BESCache(), BESCatalogList::BESCatalogList(), BESCatalogUtils::BESCatalogUtils(), BESContainerStorageFile::BESContainerStorageFile(), BESContainerStorageVolatile::BESContainerStorageVolatile(), BESInfo::BESInfo(), BESLog::BESLog(), BESMemoryGlobalArea::BESMemoryGlobalArea(), BESServerHandler::BESServerHandler(), BESUncompressManager::BESUncompressManager(), BESInfoList::build_info(), DaemonCommandHandler::DaemonCommandHandler(), BESVersionResponseHandler::execute(), BESExceptionManager::handle_exception(), ServerApp::initialize(), BESContainerStorageList::isnice(), and main().
void BESKeys::get_values | ( | const string & | s, |
vector< string > & | vals, | ||
bool & | found | ||
) |
Retrieve the values of a given key, if set.
This method allows the user of BESKeys to retrieve the value of the specified key.
s | The key the user is looking for |
vals | The value set for the specified key |
found | Set to true of the key is set or false if the key is not set. The value of a key can be set to the empty string, which is why this boolean is provided. |
Definition at line 488 of file BESKeys.cc.
Referenced by BESCatalogUtils::BESCatalogUtils(), and DaemonCommandHandler::DaemonCommandHandler().
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inline |
Definition at line 124 of file BESKeys.h.
Referenced by BESConfigResponseHandler::execute().
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inline |
Definition at line 125 of file BESKeys.h.
Referenced by BESConfigResponseHandler::execute().
void BESKeys::set_key | ( | const string & | key, |
const string & | val, | ||
bool | addto = false |
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) |
allows the user to set key/value pairs from within the application.
This method allows users of BESKeys to set key/value pairs from within the application, such as for testing purposes, key/value pairs from the command line, etc...
If addto is set to true then the value is added to the list of values for key
If addto is false, and the key is already set then this value replaces all values for the key
key | name of the key/value pair to be set |
val | value of the key to be set |
addto | Specifies whether to add the value to the key or set the value. Default is to set, not add to |
Definition at line 402 of file BESKeys.cc.
Referenced by set_key().
void BESKeys::set_key | ( | const string & | pair) |
allows the user to set key/value pairs from within the application.
This method allows users of BESKeys to set key/value pairs from within the application, such as for testing purposes, key/value pairs from the command line, etc...
If the key is already set then this value replaces the value currently held in the keys map.
pair | the key/value pair passed as key=value |
Definition at line 430 of file BESKeys.cc.
References set_key().