Querying a Bedrock configuration¶
Once one or multiple Bedrock daemons have been deployed, it is possible to query their complete configuration, either via command line, or using a C++ program.
bedrock-query is a program installed with Bedrock
that can query the configuration of one or multiple daemons
and print it on its standard output. It is called as follows.
bedrock-query <protocol> -a <address>
<protocol> is the protocol used by the Bedrock daemon
(and consequently by the query program), e.g.
<address> is the Mercury address of the Bedrock daemon process.
The configuration is printed to the standard output in the form of a JSON object associating the address with its configuration.
Multiple addresses can be passed, e.g.:
bedrock-query <protocol> -a <address1> -a <address2> -a <address3>
In this case, the resulting JSON object will have three entries, one for each address. If all the daemons are gathered in an SSG group represented by a group file of a given <filename>, the following command will query all the members of the group.
bedrock-query <protocol> -s <filename>
-i/--provider-id flag may be used to specify a provider
id other than 0. for instance:
bedrock-query <protocol> -a <address> -i 42
Using a C++ program¶
The easiest way to learn how to do all of the above in C++
is to look at how
bedrock-query is implemented, as well
as the Client.hpp and ServiceHandle.hpp files in include/bedrock.