lib/services/alarm-summary.js
'use strict';
const baAsn1 = require('../asn1');
module.exports.encode = (buffer, alarms) => {
alarms.forEach((alarm) => {
baAsn1.encodeContextObjectId(buffer, 12, alarm.objectId.type, alarm.objectId.instance);
baAsn1.encodeContextEnumerated(buffer, 9, alarm.alarmState);
baAsn1.encodeContextBitstring(buffer, 8, alarm.acknowledgedTransitions);
});
};
module.exports.decode = (buffer, offset, apduLen) => {
let len = 0;
let result;
let decodedValue;
const alarms = [];
while ((apduLen - 3 - len) > 0) {
const value = {};
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeObjectId(buffer, offset + len);
len += decodedValue.len;
value.objectId = {type: decodedValue.objectType, instance: decodedValue.instance};
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeEnumerated(buffer, offset + len, result.value);
len += decodedValue.len;
value.alarmState = decodedValue.value;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeBitstring(buffer, offset + len, result.value);
len += decodedValue.len;
value.acknowledgedTransitions = decodedValue.value;
alarms.push(value);
}
return {
len: len,
alarms: alarms
};
};