ADC Advanced Policy Expressions

SYS_T


Designates an expression that refers to the ApplicationSwitch, rather than the client or server.

This topic lists the expressions that are provided by this class.

CHECK_LIMIT (text_t identifier_name)

Used for rate limiting. Returns a boolean Result.

Parameters (expressions not allowed):

            identifier_name- Identifier Name

Returns: bool_at

CI_CALLOUT (ci_callout_bool cic)

Make a Content Inspection callout. Returns a boolean result.

Parameters (expressions not allowed):

            cic- Name of Content Inspection callout that returns boolean result.

Returns: bool_at

CI_CALLOUT (ci_callout_num cic)

Make a Content Inspection callout. Returns a number result.

Parameters (expressions not allowed):

            cic- Name of Content Inspection callout that returns number result.

Returns: num_at

CI_CALLOUT (ci_callout_text cic)

Make a Content Inspection callout. Returns a text result.

Parameters (expressions not allowed):

            cic- Name of Content Inspection callout that returns text result.

Returns: text_t

CLIENT_EXPR (text_t s)

Evaluates a client expression. Returns a boolean result. Examples:

CLIENT_EXPR("client.av(Norton).exists") add some more examples

Parameters (expressions not allowed):

            s- Client Expression

Returns: bool_at

  • ERROR

    Returns the error encountered when performing the last operation.

Returns: error_t

HTTP_CALLOUT (http_callout_bool hc)

Make a http callout. Returns a boolean result.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns boolean result.

Returns: bool_at

HTTP_CALLOUT (http_callout_num hc)

Make a http callout. Returns a number result.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns number result.

Returns: num_at

HTTP_CALLOUT (http_callout_text hc)

Make a http callout. Returns a text result.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns text as result.

Returns: text_t

  • NANO_TIME

    Returns the current system time as the number of nanoseconds since "GMT Jan 1 1970 0h 0m 0.000000000s". Accuracy may be at larger granularity than nanosecond resolution.

Returns: unsigned_long_at

NON_BLOCKING_HTTP_CALLOUT (http_callout_bool hc)

Make a non blocking http callout. Returns a boolean result 'true'.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns boolean result that is ignored.

Returns: bool_at

NON_BLOCKING_HTTP_CALLOUT (http_callout_num hc)

Make a non blocking http callout. Returns a number that is '0'.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns number which is ignored.

Returns: num_at

NON_BLOCKING_HTTP_CALLOUT (http_callout_text hc)

Make a non blocking http callout. Returns a text that is of zero length.

Parameters (expressions not allowed):

            hc- Name of Http callout that returns text as result which is ignored.

Returns: text_t

  • NSIP

    Returns the netscaler's IPV4 address.

Returns: ip_address_at

  • RANDOM

    Returns a random number between 0 and 1, inclusive of 0 but exclusive of 1

Returns: double_at

SERVICEGROUP (text_t servicegroup_name)

Used for Servicegroup expressions.These expression raises an undef if servicegroup with the given name doesn't exist.

Parameters (expressions not allowed):

            servicegroup_name- ServiceGroup Name

Returns: servicegroup_t

SERVICE (text_t service_name)

Used for Service expressions.These expression raises an undef if service with the given name doesn't exist.

Parameters (expressions not allowed):

            service_name- Service Name

Returns: service_t

  • TIME

    Returns the current system time as the number of seconds since "GMT Jan 1 1970 0h 0m 0s". NOTE: It is not possible to set the system time to date and time before 1970.

Returns: time_at

  • UUID

    Returns a newly generated UUID.

Returns: text_t

VSERVER (text_t vserver_name)

Used for vserver expressions.These expressions raise undef if virtual server with name doesn't exist.

Parameters (expressions not allowed):

            vserver_name- Virtual Server

Returns: vserver_t

SYS_T

In this article