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This module provides a supervisor for the entire EVA
application. An application can use this supervisor,
or write its own, using the start_link functions of the
individual services.
The supervisor can be configured to start the different EVA
services independently, such as the basic eva_server and
eva_log functionality, and to start the SNMP
implementations of the respective service. For each possible
combination of services, there is a corresponding start
function, for example start_link_log/1 which starts the
basic eva server and the log functionality.
Before the services can be used, the Mnesia tables involved
must be created. For each combination of services, there is a
corresponding function which creates the tables. Each such
function takes a list of nodes as its argument. This list of
nodes defines to which nodes the Mnesia tables will be
replicated. These nodes should be the same nodes as where the
application where EVA is included can run distributed. This is
as per the kernel configuration parameter distributed.
create_tables(Nodes) -> void()
Types:
Nodes = [node()]
Creates the Mnesia tables for the basic EVA service
(eva_server) only.
create_tables_log(Nodes) -> void()
Types:
Nodes = [node()]
Creates the Mnesia tables for the basic EVA service
(eva_server) and EVA log service (eva_log).
create_tables_log_snmp(Nodes) -> void()
Types:
Nodes = [node()]
Creates the Mnesia tables for the basic EVA service
(eva_server), EVA log service (eva_log), and
for the SNMP implementation of these
(eva_snmp_adaptation and eva_log_snmp).
create_tables_snmp(Nodes) -> void()
Types:
Nodes = [node()]
Creates the Mnesia tables for the basic EVA service
(eva_server), and for the SNMP implementation of
this service (eva_snmp_adaptation).
start_link() -> {ok, Pid} | {error, Reason}
Starts the supervisor and the basic EVA service
(eva_server) only.
start_link_log(DefaultLog) -> {ok, Pid} | {error, Reason}
Types:
DefaultLog = string() | false
Starts the supervisor, the basic EVA service
(eva_server) and EVA log service (eva_log).
DefaultLog is passed to
eva_log:start_link(DefaultLog).
start_link_log_snmp(DefaultLog, LogDir, MaxDirSize) ->
{ok, Pid} | {error, Reason}
Types:
DefaultLog = string() | false
LogDir = string()
MaxDirSize = integer()
Starts the supervisor, the basic EVA service
(eva_server), EVA log service (eva_log) and
the SNMP implementations of these
(eva_snmp_adaptation and eva_log_snmp).
DefaultLog is passed to
eva_log:start_link(DefaultLog), LogDir and
MaxDirSize to eva_log_snmp:start_link(LogDir,
MaxDirSize).
start_link_snmp() -> {ok, Pid} | {error, Reason}
Starts the supervisor, the basic EVA service
(eva_server) and the SNMP implementation of this
service (eva_snmp_adaptation).
eva_log(3), eva_server(3), eva_log_snmp(3), eva_snmp_adaptation(3)