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Configuration Guide - Device Management

S2720, S5700, and S6720 V200R013C00

This document describes the configurations of Device Management, including device status query, hardware management, Stack, SVF, cloud-based management, PoE, monitoring interface, OPS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.
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Combined Event Trigger

Combined Event Trigger

Interface Name

Combined event trigger

Application Phase

Subscription phase

API Prototype

result1_value, result2_description = ops.trigger(occurs=1, period=30, delay=0, suppress=0)

Description

Parameter

Description

Value

occurs

Indicates the number of times an event meets trigger conditions.

The value is an integer that ranges from 1 to 2147483647. The default value is 1.

period

Indicates the detection period.

If the Multi-Condition Combination API contains the operator and or andnot or the occurs parameter of ops.trigger is larger than 1, the specified detection period takes effect.

The value is an integer that ranges from 1 to 2147483647, in seconds. The default value is 30 seconds.

delay

Indicates the delay in executing the action in the execution phase. After a Python script meets its subscription conditions, the execution action will be triggered after a specified delay. The script will be executed immediately for the first time without any delay.

The value is an integer that ranges from 0 to 2147483647, in seconds. The default value is 0 seconds.

suppress

Indicates the number of times execution of the action in the execution phase is suppressed within a detection period.

The value is an integer that ranges from 0 to 2147483647. The default value is 0, indicating no suppression. The value n indicates that the execution task is not executed after being executed n times, and only statistics are collected.

Return Value

The result1_value and result2_description in the API prototype indicate return values.

The result1_value is the first return value, 0 indicates success, and 1 indicates failure.

The result2_description is the second return value, indicating the failure cause. It is returned only when the first return value is 1.

Usage Description

The values of delay and suppress cannot be non-zero at the same time.

After multiple simple events are combined into a complex event through the Multi-Condition Combination API, the corresponding action is triggered if the complex event is matched once in 30 seconds.

When you need to trigger the corresponding action after the complex event is matched multiple times, use the ops.trigger API.

For example, when a complex event (e1 and e2) is defined in the Multi-Condition Combination API and you need to trigger the corresponding action within the 20-second detection period after the complex event is matched twice, use the following statement:

value, descri_str = ops.trigger(occurs=2, period=20, delay=0, suppress=0)

Assume that e1 occurs at 0s and e2 occurs at 5s, the complex event (e1 and e2) is matched for the first time. If e1 occurs again at 10s and e2 occurs again at 15s, the complex event (e1 and e2) is matched for the second time. The complex event is matched within the 20-second detection period and the value of occurs is equal to 2, so the corresponding action is triggered.

Example

When you run the arp learning multicast disable or arp broadcast disable command twice in 1 hour, the corresponding action is triggered.

value1, descri_str1 = ops.cli.subscribe("cli1", "arp learning multicast disable", enter=True, sync=True, sync_wait=60)
value2, descri_str2 = ops.cli.subscribe("cli2", "arp broadcast disable", enter=True, sync=True, sync_wait=60)
value3, descri_str3 = ops.correlate("cli1 and cli2")
value4, descri_str4 = ops.trigger(occurs=2, period=3600, delay=0, suppress=0)
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Updated: 2019-04-20

Document ID: EDOC1100065674

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