Wialon Hosting

Thank you so much dear.

Looks strange. session.loadLibrary was called before updateDataFlags/searchItem?

var sess = wialon.core.Session.getInstance()
sess.loadLibrary("resourceDrivers")
let flags = wialon.item.Item.dataFlag.base | 0x00000100
sess.updateDataFlags(
        [
          { type: "type", data: "avl_resource", flags: flags, mode: 0 }
        ],
        function(code) {
            if (code) {
               alert(wialon.core.Errors.getErrorText(code))
               return;
             }
             var resources = sess.getItems("avl_resource")
             console.log(resources)             
        }
)

this is my code

thank you so much

Currently there is no method to get moving state, such as displayed in the monitoring.

We have code similar to:

function getUnitMovingState(unit) {
  let info = {
    isMoving: false, // by real-time sensor or speed
    isIgnitionOn: null, // Boolean | null

    isLbs: false,
    isStale: true, // expired `unitMovingTimeout`

    isPositionPresent: false,
    isIgnitionPresent: false,
    isRealTimeSensorPresent: false
  };

  let pos = getLastKnownPosition(unit);

  if (!pos) {
    return info;
  }

  info.isPositionPresent = true;

  //// LBS
  info.isLbs = !!(
    pos.s <= 0 &&
    typeof pos.f === "number" &&
    wialon.util.Number.and(pos.f, wialon.item.Unit.dataMessageFlag.lbsFlag)
  );

  let serverTime = session.getServerTime();

  //// Stale position
  let unitMovingTimeout = parseInt(
    currentUser.getCustomProperty("mu_move_durr", "3600"),
    10
  );
  if (!isFinite(unitMovingTimeout)) unitMovingTimeout = 3600;

  info.isStale = unitMovingTimeout < serverTime - pos.t;

  //// Sensors
  let sensors = unit.getSensors();

  let realTimeSensor, ignitionSensor;

  for (let prop in sensors)
    if (sensors[prop].t === "real-time motion sensor") {
      realTimeSensor = sensors[prop];
      break;
    }
  for (let prop in sensors)
    if (sensors[prop].t === "engine operation") {
      ignitionSensor = sensors[prop];
      break;
    }

  //// Ignition
  let ignitionSensorValue = null;

  if (ignitionSensor) {
    ignitionSensorValue = calculateLastSensorValue(unit, ignitionSensor);

    if (typeof ignitionSensorValue === "number") {
      info.isIgnitionPresent = true;
    }
  }

  info.isIgnitionOn = !!ignitionSensorValue;

  //// Moving state
  let realTimeSensorValue = null;

  if (realTimeSensor) {
    realTimeSensorValue = calculateLastSensorValue(unit, realTimeSensor);

    if (typeof realTimeSensorValue === "number") {
      info.isRealTimeSensorPresent = true;
    }
  }

  if (typeof realTimeSensorValue === "number") {
    info.isMoving = realTimeSensorValue !== 0;
  } else {
    info.isMoving = pos.s > 0;
  }

  return info;
}

(there is few missing functions like getLastKnownPosition, calculateLastSensorValue, they can be replaced by unit.getPosition, unit.calculateSensorValue, but calculateLastSensorValue should return null instead of -348201.3876 in the case of invalid value)

Then we are visualizing this state.

Hi, I want to get Unit Group Name, I requested with
https://hst-api.wialon.com/wialon/ajax.html

data-params:
{
                svc: 'report/exec_report',
                params: {
                  "spec":{
                    "itemsType":"avl_unit_group",
                    "propName":"",
                    "propValueMask":"",
                    "sortType":"",
                    "propType":"",
                    "or_logic":false
                  },
                "force":1,
                "flags":1,
                "from":0,
                "to":0
                },
                sid: session
              }

also with this

{
                svc: 'core/search_items',
                params: {
                  "spec":{
                    "itemsType":"avl_unit_group",
                    "propName":"",
                    "propValueMask":"",
                    "sortType":"",
                    "propType":"",
                    "or_logic":false
                  },
                "force":1,
                "flags":1,
                "from":0,
                "to":0
                },
                sid: session
              }

But, I got this exception:

TypeError: Cannot read property 'setName' of undefined
    at wialon.item.Item.remoteUpdateName() (wialon.js:11195)
    at e (jquery.min.js:4)
    at Ab (jquery.min.js:4)
    at Ab (jquery.min.js:4)
    at Ab (jquery.min.js:4)
    at Function.r.param (jquery.min.js:4)
    at Function.ajax (jquery.min.js:4)
    at eval (Dashboard.vue?98fa:1094)
    at Array.forEach (<anonymous>)

I am confused about this, can you please help me?

did not call any method, just put an AJAX request on this URL with this data,

response comes with this error

oops, i made mistake with requesting jquery AJAX request.

thank you so much

This is a bit complicated.

To get historical data, there is three ways:

• Fetch messages and calculate whatever you want
• Execute report, that will provide required info
• Use events, which has time intervals of sensor values/trips

Events is a most efficient way (because you don't know, how much messages you need to fetch to find message, when engine was on, for some units you can easily fetch megabytes and find nothing; reports internally processing all messages for specified period and can be slow; events are precalculated and in most of the cases will be much faster).

You need to execute events/load with sensors type and some time interval, then events/get.

Something like:

let time = sdk.s.getServerTime();

remote.remoteCall('events/load', {
    itemId: 42,
    ivalType: 1,
    timeFrom: 0, // better to limit it for few days
    timeTo: time,
    detectors: [{
        type: 'sensors',
        filter1: 13,
    }],
}, function() { ... });

// ... in a callback:

remote.remoteCall('events/get', {
    selector: {
        type: 'sensors',
        timeFrom: time - 24 * 60 * 60,
        timeTo: time,
        detalization: 3,
    },
});

(where 13 (filter1) — is an engine sensor id)

Then you can try to find latest interval, where engine was on.

With such interval, you can try to fetch trips from events to find stops inside it (events also has expr, that allow to intersect intervals, but I cannot help with them).

See for report/get_result_subrows and report/select_result_rows