snmpa
Interface Functions to the SNMP toolkit agent
The module snmpa
contains interface functions to the
SNMP agent.
DATA TYPES
oid() = [byte()] atl_type() = read | write | read_write notification_delivery_info() = #snmpa_notification_delivery_info{}
The oid()
type is used to represent an ASN.1 OBJECT IDENTIFIER.
The record snmpa_notification_delivery_info
contains the following fields:
tag = term()
-
A user defined identity representing this notification send operation.
mod = module()
-
A module implementing the snmpa_notification_delivery_info_receiver behaviour. The info functions of this module will be called at various stages of delivery.
extra = term()
-
This is any extra info the user wants to have supplied when the functions in the callback module is called.
Functions
add_agent_caps(SysORID, SysORDescr) -> SysORIndex
SysORID = oid()
SysORDescr = string()
SysORIndex = integer()
This function can be used to add an AGENT-CAPABILITY statement to the sysORTable in the agent. The table is defined in the SNMPv2-MIB.
del_agent_caps(SysORIndex) -> void()
SysORIndex = integer()
This function can be used to delete an AGENT-CAPABILITY statement to the sysORTable in the agent. This table is defined in the SNMPv2-MIB.
get_agent_caps() -> [[SysORIndex, SysORID, SysORDescr, SysORUpTime]]
SysORIndex = integer()
SysORId = oid()
SysORDescr = string()
SysORUpTime = integer()
Returns all AGENT-CAPABILITY statements in the sysORTable in the agent. This table is defined in the SNMPv2-MIB.
get(Agent, Vars) -> Values | {error, Reason}
get(Agent, Vars, Context) -> Values | {error, Reason}
Agent = pid() | atom()
Vars = [oid()]
Context = string()
Values = [term()]
Reason = {atom(), oid()}
Performs a GET operation on the agent. All loaded MIB objects are visible in this operation. The agent calls the corresponding instrumentation functions just as if it was a GET request coming from a manager.
Note that the request specific parameters (such as current_request_id) are not accessible for the instrumentation functions if this function is used.
get_next(Agent, Vars) -> Values | {error, Reason}
get_next(Agent, Vars, Context) -> Values | {error, Reason}
Agent = pid() | atom()
Vars = [oid()]
Context = string()
Values = [{oid(), term()}]
Reason = {atom(), oid()}
Performs a GET-NEXT operation on the agent. All loaded MIB objects are visible in this operation. The agent calls the corresponding instrumentation functions just as if it was a GET request coming from a manager.
Note that the request specific parameters (such as
snmpa:current_request_id/0
are not accessible for the
instrumentation functions if this function is used.
backup(BackupDir) -> ok | {error, Reason}
backup(Agent, BackupDir) -> ok | {error, Reason}
BackupDir = string()
Agent = pid() | atom()
Backup persistent/permanent data handled by the agent (such as local-db, mib-data and vacm).
Data stored by mnesia is not handled.
BackupDir cannot be identical to DbDir.
info() -> [{Key, Value}]
info(Agent) -> [{Key, Value}]
Agent = pid() | atom()
Returns a list (a dictionary) containing information about the agent. Information includes loaded MIBs, registered sub-agents, some information about the memory allocation.
As of version 4.4 the format of the info has been changed. To convert the info to the old format, call the old_info_format function.
old_info_format(NewInfo) -> OldInfo
OldInfo = NewInfo = [{Key, Value}]
As of version 4.4 the format of the info has been changed. This function is used to convert to the old (pre-4.4) info format.
load_mibs(Mibs) -> ok | {error, Reason}
load_mibs(Agent,Mibs) -> ok | {error, Reason}
Agent = pid() | atom()
Mibs = [MibName]
MibName = string()
Reason = term()
Loads Mibs
into an agent. If the agent cannot load
all MIBs, it will indicate where loading was aborted. The
MibName
is the name of the Mib, including the path to
where the compiled mib is found. For example,
Dir = code:priv_dir(my_app) ++ "/mibs/", snmpa:load_mibs(snmp_master_agent, [Dir ++ "MY-MIB"]).
unload_mibs(Mibs) -> ok | {error, Reason}
unload_mibs(Agent,Mibs) -> ok | {error, Reason}
Agent = pid() | atom()
Mibs = [MibName]
MibName = string()
Unloads MIBs into an agent. If it cannot unload all MIBs, it will indicate where unloading was aborted.
which_mibs() -> Mibs
which_mibs(Agent) -> Mibs
Agent = pid() | atom()
Mibs = [{MibName, MibFile}]
MibName = atom()
MibFile = string()
Retrieve the list of all the mibs loaded into this agent. Default is the master agent.
whereis_mib(MibName) -> {ok, MibFile} | {error, Reason}
whereis_mib(Agent, MibName) -> {ok, MibFile} | {error, Reason}
Agent = pid() | atom()
MibName = atom()
MibFile = string()
Reason = term()
Get the full path to the (compiled) mib-file.
current_request_id() -> {value, RequestId} | false
current_context() -> {value, Context} | false
current_community() -> {value, Community} | false
current_address() -> {value, Address} | false
RequestId = integer()
Context = string()
Community = string()
Address = term()
Get the request-id, context, community and address of the request currently being processed by the agent.
Note that these functions is intended to be called by the instrumentation functions and only if they are executed in the context of the agent process (e.g. it does not work if called from a spawned process).
enum_to_int(Name, Enum) -> {value, Int} | false
enum_to_int(Db, Name, Enum) -> {value, Int} | false
Db = term()
Name = atom()
Enum = atom()
Int = int()
Converts the symbolic value Enum
to the
corresponding integer of the enumerated object or type
Name
in a MIB. The MIB must be loaded.
false
is returned if the object or type is not
defined in any loaded MIB, or if it does not define the
symbolic value as enumerated.
Db
is a reference to the symbolic store database
(retrieved by a call to get_symbolic_store_db/0
).
int_to_enum(Name, Int) -> {value, Enum} | false
int_to_enum(Db, Name, Int) -> {value, Enum} | false
Db = term()
Name = atom()
Int = int()
Enum = atom()
Converts the integer Int
to the corresponding
symbolic value of the enumerated object or type Name
in
a MIB. The MIB must be loaded.
false
is returned if the object or type is not
defined in any loaded MIB, or if it does not define the
symbolic value as enumerated.
Db
is a reference to the symbolic store database
(retrieved by a call to get_symbolic_store_db/0
).
name_to_oid(Name) -> {value, oid()} | false
name_to_oid(Db, Name) -> {value, oid()} | false
Db = term()
Name = atom()
Looks up the OBJECT IDENTIFIER of a MIB object, given the symbolic name. Note, the OBJECT IDENTIFIER is given for the object, not for an instance.
false
is returned if the object is not defined in any
loaded MIB.
Db
is a reference to the symbolic store database
(retrieved by a call to get_symbolic_store_db/0
).
oid_to_name(OID) -> {value, Name} | false
oid_to_name(Db, OID) -> {value, Name} | false
Db = term()
OID = oid()
Name = atom()
Looks up the symbolic name of a MIB object, given OBJECT IDENTIFIER.
false
is returned if the object is not defined in any
loaded MIB.
Db
is a reference to the symbolic store database
(retrieved by a call to get_symbolic_store_db/0
).
which_aliasnames() -> Result
Result = [atom()]
Retrieve all alias-names known to the agent.
which_tables() -> Result
Result = [atom()]
Retrieve all tables known to the agent.
which_variables() -> Result
Result = [atom()]
Retrieve all variables known to the agent.
which_notifications() -> Result
Result = [{Name, MibName, Info}]
Name = atom()
MibName = atom()
Info = term()
Retrieve all notifications (and traps) known to the agent.
log_to_txt(LogDir, Mibs)
log_to_txt(LogDir, Mibs, OutFile) -> ok | {error, Reason}
log_to_txt(LogDir, Mibs, OutFile, LogName) -> ok | {error, Reason}
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) -> ok | {error, Reason}
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start) -> ok | {error, Reason}
log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop) -> ok | {error, Reason}
LogDir = string()
Mibs = [MibName]
MibName = string()
OutFile = string()
LogName = string()
LogFile = string()
Start = Stop = null | datetime() | {local_time,datetime()} | {universal_time,datetime()}
Reason = disk_log_open_error() | file_open_error() | term()
disk_log_open_error() = {LogName, term()}
file_open_error() = {OutFile, term()}
Converts an Audit Trail Log to a readable text file.
OutFile
defaults to "./snmpa_log.txt".
LogName
defaults to "snmpa_log".
LogFile
defaults to "snmpa.log".
See snmp:log_to_txt
for more info.
change_log_size(NewSize) -> ok | {error, Reason}
NewSize = {MaxBytes, MaxFiles}
MaxBytes = integer()
MaxFiles = integer()
Reason = term()
Changes the log size of the Audit Trail Log. The application must be configured to use the audit trail log function. Please refer to disk_log(3) in Kernel Reference Manual for a description of how to change the log size.
The change is permanent, as long as the log is not deleted. That means, the log size is remembered across reboots.
set_log_type(NewType) -> {ok, OldType} | {error, Reason}
set_log_type(Agent, NewType) -> {ok, OldType} | {error, Reason}
NewType = OldType = atl_type()
Agent = pid() | atom()
Reason = term()
Changes the run-time Audit Trail log type.
Note that this has no effect on the application configuration as defined by configuration files, so a node restart will revert the config to whatever is in those files.
This function is primarily useful in testing/debugging scenarios.
mib_of(Oid) -> {ok, MibName} | {error, Reason}
mib_of(Agent, Oid) -> {ok, MibName} | {error, Reason}
Agent = pid() | atom()
Oid = oid()
MibName = atom()
Reason = term()
Finds the mib corresponding to the Oid
. If it is a
variable, the Oid must be
<Oid for var>.0 and if it is a table, Oid must be
<table>.<entry>.<col>.<any>
me_of(Oid) -> {ok, Me} | {error, Reason}
me_of(Agent, Oid) -> {ok, Me} | {error, Reason}
Agent = pid() | atom()
Oid = oid()
Me = #me{}
Reason = term()
Finds the mib entry corresponding to the Oid
. If it is a
variable, the Oid must be
<Oid for var>.0 and if it is a table, Oid must be
<table>.<entry>.<col>.<any>
invalidate_mibs_cache() -> void()
invalidate_mibs_cache(Agent) -> void()
Agent = pid() | atom()
Invalidate the mib server cache.
The entire contents of the cache will be deleted.
enable_mibs_cache() -> void()
enable_mibs_cache(Agent) -> void()
Agent = pid() | atom()
Enable the mib server cache.
disable_mibs_cache() -> void()
disable_mibs_cache(Agent) -> void()
Agent = pid() | atom()
Disable the mib server cache.
gc_mibs_cache() -> {ok, NumElementsGCed} | {error, Reason}
gc_mibs_cache(Agent) -> {ok, NumElementsGCed} | {error, Reason}
gc_mibs_cache(Age) -> {ok, NumElementsGCed} | {error, Reason}
gc_mibs_cache(Agent, Age) -> {ok, NumElementsGCed} | {error, Reason}
gc_mibs_cache(Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}
gc_mibs_cache(Agent, Age, GcLimit) -> {ok, NumElementsGCed} | {error, Reason}
Agent = pid() | atom()
Age = integer() > 0
GcLimit = integer() > 0 | infinity
NumElementsGCed = integer() >= 0
Reason = term()
Perform mib server cache gc.
Manually performs a mib server cache gc.
This can be done regardless of the value of the
autogc
option.
The NumElementsGCed
value indicates how many
elements where actually removed from the cache.
enable_mibs_cache_autogc() -> void()
enable_mibs_cache_autogc(Agent) -> void()
Agent = pid() | atom()
Enable automatic gc of the mib server cache.
disable_mibs_cache_autogc() -> void()
disable_mibs_cache_autogc(Agent) -> void()
Agent = pid() | atom()
Disable automatic gc of the mib server cache.
update_mibs_cache_age(NewAge) -> ok | {error, Reason}
update_mibs_cache_age(Agent, NewAge) -> ok | {error, Reason}
Agent = pid() | atom()
NewAge = integer() > 0
Reason = term()
Change the mib server cache age
property.
update_mibs_cache_gclimit(NewGcLimit) -> ok | {error, Reason}
update_mibs_cache_gclimit(Agent, NewGCLimit) -> ok | {error, Reason}
Agent = pid() | atom()
NewGcLimit = integer() > 0 | infinity
Reason = term()
Change the mib server cache gclimit
property.
register_notification_filter(Id, Mod, Data) -> ok | {error, Reason}
register_notification_filter(Agent, Id, Mod, Data) -> ok | {error, Reason}
register_notification_filter(Id, Mod, Data, Where) -> ok | {error, Reason}
register_notification_filter(Agent, Id, Mod, Data, Where) -> ok | {error, Reason}
Agent = pid() | atom()
Id = filter_id()
filter_id() = term()
Mod = atom()
Data = term()
Where = filter_position()
Reason = term()
filter_position() = first | last | {insert_before, filter_id()} | {insert_after, filter_id()}
Registers a notification filter.
Mod
is a module implementing the
snmpa_notification_filter
behaviour.
Data
will be passed on to the filter when calling the
functions of the behaviour.
unregister_notification_filter(Id) -> ok | {error, Reason}
unregister_notification_filter(Agent, Id) -> ok | {error, Reason}
Agent = pid() | atom()
Id = filter_id()
filter_id() = term()
Unregister a notification filter.
which_notification_filter() -> Filters
which_notification_filter(Agent) -> Filters
Agent = pid() | atom()
Filters = [filter_id()]
filter_id() = term()
List all notification filters in an agent.
set_request_limit(NewLimit) -> {ok, OldLimit} | {error, Reason}
set_request_limit(Agent, NewLimit) -> {ok, OldLimit} | {error, Reason}
NewLimit = OldLimit = infinity | integer() >= 0
Agent = pid() | atom()
Reason = term()
Changes the request limit.
Note that this has no effect on the application configuration as defined by configuration files, so a node restart will revert the config to whatever is in those files.
This function is primarily useful in load regulation scenarios.
register_subagent(Agent, SubTreeOid, Subagent) -> ok | {error, Reason}
Agent = pid() | atom()
SubTreeOid = oid()
SubAgent = pid()
Registers a sub-agent under a sub-tree of another agent.
It is easy to make mistakes when registering sub-agents and this activity should be done carefully. For example, a strange behaviour would result from the following configuration:
snmp_agent:register_subagent(MAPid,[1,2,3,4],SA1), snmp_agent:register_subagent(SA1,[1,2,3], SA2).
SA2
will not get requests starting with object
identifier [1,2,3]
since SA1
does not.
unregister_subagent(Agent, SubagentOidOrPid) -> ok | {ok, SubAgentPid} | {error, Reason}
Agent = pid() | atom()
SubTreeOidorPid = oid() | pid()
Unregister a sub-agent. If the second argument is a pid,
then that sub-agent will be unregistered from all trees in
Agent
.
send_notification(Agent, Notification, Receiver)
send_notification(Agent, Notification, Receiver, Varbinds)
send_notification(Agent, Notification, Receiver, NotifyName, Varbinds)
send_notification(Agent, Notification, Receiver, NotifyName, ContextName, Varbinds) -> void()
Agent = pid() | atom()
Notification = atom()
Receiver = no_receiver | {Tag, Recv} | notification_delivery_info()
Tag = term()
Recv = receiver()
receiver() = pid() | atom() | {Mod, Func, Args}
Mod = atom()
Func = atom()
Args = list()
NotifyName = string()
ContextName = string()
Varbinds = varbinds()
varbinds() = [varbind()]
varbind() = {Variable, Value} | {Column, RowIndex, Value} | {OID, Value}
Variable = atom()
Column = atom()
OID = oid()
Value = term()
RowIndex = [int()]
Sends the notification Notification
to the
management targets defined for NotifyName
in the
snmpNotifyTable
in SNMP-NOTIFICATION-MIB from the
specified context. If no NotifyName
is specified (or
if it is ""
), the notification is sent to all
management targets (Addresses
below). If no ContextName
is specified, the default ""
context is used.
The parameter Receiver
specifies where information
about delivery of Inform-Requests should be sent. The agent
sends Inform-Requests and waits for acknowledgments from the
managers. Receiver
can have three values:
-
no_receiver
- No information is delivered. -
{Tag, Recv}
- The information is delivered either via messages or via a function call according to the value ofRecv
. -
notification_delivery_info()
- The information is delivered via a function call according to this data. See the DATA TYPES section above for details.
If Receiver
has the value {Tag, Recv}
, the delivery is
done according to Recv
:
-
pid() | atom()
- The info will be delivered in the following messages:-
{snmp_targets, Tag, Addresses}
This inform the user which target addresses the notification was sent to.
-
{snmp_notification, Tag, {got_response, Address}}
This informs the user that this target address acknowledged the notification.
-
{snmp_notification, Tag, {no_response, Address}}
This informs the user that this target address did not acknowledge notification.
The notification is sent as an Inform-Request to each target address in
Addresses
and if there are no targets for which an Inform-Request is sent,Addresses
is the empty list[]
.The
receiver
will first be sent thesnmp_targets
message, and then for each address inAddresses
list, one of the twosnmp_notification
messages. -
-
{Mod, Func, Args}
- The info will be delivered via the function call:Mod:Func([Msg | Args])
where
Msg
has the same content and purpose as the messages descrived above.
Address
is a management target address and Addresses
is a
list of management target addresses. They are defined as followes:
Addresses = [address()] Address = address() address() = v1_address() | v3_address() v1_address() = {TDomain, TAddress} v3_address() = {{TDomain, TAddress}, V3MsgData} TDomain = tdoamin() TAddress = taddress() tdomain() = The oid of snmpUDPDomain This is the only supported transport domain. taddress() = [A1, A2, A3, A4, P1, P3] The 4 first bytes makes up the IP-address and the last 2, the UDP-port number. V3MsgData = v3_msg_data() v3_msg_data() = term()
If Receiver
is a notification_delivery_info()
record,
then the information about the notification delivery will be delivered
to the receiver
via the callback functions defined by the
snmpa_notification_delivery_info_receiver
behaviour according to the content of the notification_delivery_info()
record.
The optional argument Varbinds
defines
values for the objects in the notification. If no value is
given for an object, the Agent
performs a get-operation
to retrieve the value.
Varbinds
is a list of Varbind
, where each
Varbind
is one of:
{Variable, Value}
, whereVariable
is the symbolic name of a scalar variable referred to in the notification specification.{Column, RowIndex, Value}
, whereColumn
is the symbolic name of a column variable.RowIndex
is a list of indices for the specified element. If this is the case, the OBJECT IDENTIFIER sent in the notification is theRowIndex
appended to the OBJECT IDENTIFIER for the table column. This is the OBJECT IDENTIFIER which specifies the element.{OID, Value}
, whereOID
is the OBJECT IDENTIFIER for an instance of an object, scalar variable, or column variable.
For example, to specify that sysLocation
should have the
value "upstairs"
in the notification, we could use one of:
{sysLocation, "upstairs"}
or{[1,3,6,1,2,1,1,6,0], "upstairs"}
or{?sysLocation_instance, "upstairs"}
(provided that the generated.hrl
file is included)
If a variable in the notification is a table element, the
RowIndex
for the element must be given in the
Varbinds
list. In this case, the OBJECT IDENTIFIER sent
in the notification is the OBJECT IDENTIFIER that identifies this
element. This OBJECT IDENTIFIER could be used in a get
operation later.
This function is asynchronous, and does not return any
information. If an error occurs, user_err/2
of the error
report module is called and the notification is discarded.
send_trap(Agent,Trap,Community)
send_trap(Agent,Trap,Community,Varbinds) -> void()
Agent = pid() | atom()
Trap = atom()
Community = string()
Varbinds = [Varbind]
Varbind = {Variable, Value} | {Column, RowIndex, Value} | {OID, Value}
Variable = atom()
Column = atom()
OID = oid()
Value = term()
RowIndex = [int()]
Note! This function is only kept for backwards
compatibility reasons. Use send_notification
instead.
Sends the trap Trap
to the managers defined for
Community
in the intTrapDestTable
in
OTP-SNMPEA-MIB. The optional argument Varbinds
defines
values for the objects in the trap. If no value is given for
an object, the Agent
performs a get-operation to
retrieve the value.
Varbinds
is a list of Varbind
, where each
Varbind
is one of:
{Variable, Value}
, whereVariable
is the symbolic name of a scalar variable referred to in the trap specification.{Column, RowIndex, Value}
, whereColumn
is the symbolic name of a column variable.RowIndex
is a list of indices for the specified element. If this is the case, the OBJECT IDENTIFIER sent in the trap is theRowIndex
appended to the OBJECT IDENTIFIER for the table column. This is the OBJECT IDENTIFIER which specifies the element.{OID, Value}
, whereOID
is the OBJECT IDENTIFIER for an instance of an object, scalar variable, or column variable.
For example, to specify that sysLocation
should have the
value "upstairs"
in the trap, we could use one of:
{sysLocation, "upstairs"}
or{[1,3,6,1,2,1,1,6,0], "upstairs"}
or{?sysLocation_instance, "upstairs"}
(provided that the generated.hrl
file is included)
If a variable in the trap is a table element, the
RowIndex
for the element must be given in the
Varbinds
list. In this case, the OBJECT IDENTIFIER sent
in the trap is the OBJECT IDENTIFIER that identifies this
element. This OBJECT IDENTIFIER could be used in a get
operation later.
This function is asynchronous, and does not return any
information. If an error occurs, snmp_error:user_err/2
is called and the trap is discarded.
discovery(TargetName, Notification) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, ContextName, Varbinds) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler) -> {ok, ManagerEngineID} | {error, Reason}
discovery(TargetName, Notification, ContextName, Varbinds, DiscoHandler, ExtraInfo) -> {ok, ManagerEngineID} | {error, Reason}
TargetName = string()
Notification = atom()
ContextName = string() (defaults to "")
Varbinds = varbinds()
varbinds() = [varbind()]
DiscoHandler = snmpa_discovery_handler()
ExtraInfo = term()
snmpa_discovery_handler() = Module implementing the snmpa_discovery_handler behaviour
ManagerEngineID = string()
varbind() = {Variable, Value} | {Column, RowIndex, Value} | {OID, Value}
Variable = atom()
Column = atom()
OID = oid()
Value = term()
RowIndex = [int()]
Reason = term()
Initiate the discovery process with the manager identified by
TargetName
using the notification Notification
.
This function is synchronous, which means that it will return when the discovery process has been completed or failed.
The DiscoHandler
module is used during the discovery
process. See
discovery handler
for more info.
The ExtraInfo
argument is passed on to the callback functions
of the DiscoHandler
.
Note!
If we are not at security-level noAuthNoPriv
,
this could be complicated, since the agent will then continue
with stage 2, before which the usm-related updates must be
done.
Note!
The default discovery handler will require
additional actions by the caller and the discovery will not work
if the security-level is higher then noAuthNoPriv
.
convert_config(OldConfig) -> AgentConfig
OldConfig = list()
AgentConfig = list()
This off-line utility function can be used to convert the old snmp application config (pre snmp-4.0) to the new snmp agent config (as of snmp-4.0).
For information about the old config (OldConfig
)
see the OTP R9C documentation.
For information about the current agent config
(AgentConfig
), see either
the SNMP application
part of the reference manual or the
Configuring the application
chapter of the SNMP user's guide.
restart_worker() -> void()
restart_worker(Agent) -> void()
Agent = pid() | atom()
Restart the worker process of a multi-threaded agent.
This is a utility function, that can be usefull when e.g. debugging instrumentation functions.
restart_set_worker() -> void()
restart_set_worker(Agent) -> void()
Agent = pid() | atom()
Restart the set worker process of a multi-threaded agent.
This is a utility function, that can be usefull when e.g. debugging instrumentation functions.
verbosity(Ref,Verbosity) -> void()
Ref = pid() | sub_agents | master_agent | net_if | mib_server | symbolic_store | note_store | local_db
Verbosity = verbosity() | {subagents, verbosity()}
verbosity() = silence | info | log | debug | trace
Sets verbosity for the designated process. For the lowest
verbosity silence
, nothing is printed. The higher the
verbosity, the more is printed.
See Also
calendar(3), erlc(1)
- add_agent_caps/2
- del_agent_caps/1
- get_agent_caps/0
- get/2
- get/3
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