Exemplo n.º 1
0
        /// <summary>
        /// Updates the metadata for a tag.
        /// </summary>
        private bool UpdateTagMetadata(
            UnderlyingSystemTag tag,
            Opc.Ua.Test.DataGenerator generator)
        {
            switch (tag.TagType)
            {
            case UnderlyingSystemTagType.Analog:
            {
                if (tag.EuRange != null)
                {
                    double[] range = new double[tag.EuRange.Length];

                    for (int ii = 0; ii < tag.EuRange.Length; ii++)
                    {
                        range[ii] = tag.EuRange[ii] + 1;
                    }

                    tag.EuRange = range;
                }

                break;
            }

            case UnderlyingSystemTagType.Digital:
            case UnderlyingSystemTagType.Enumerated:
            {
                if (tag.Labels != null)
                {
                    string[] labels = new string[tag.Labels.Length];

                    for (int ii = 0; ii < tag.Labels.Length; ii++)
                    {
                        labels[ii] = generator.GetRandomString();
                    }

                    tag.Labels = labels;
                }

                break;
            }

            default:
            {
                return(false);
            }
            }

            return(true);
        }
Exemplo n.º 2
0
        /// <summary>
        /// Updates the value of an tag.
        /// </summary>
        private bool UpdateTagValue(
            UnderlyingSystemTag tag,
            Opc.Ua.Test.DataGenerator generator)
        {
            // don't update writeable tags.
            if (tag.IsWriteable)
            {
                return(false);
            }

            // check if a range applies to the value.
            var high = 0;
            var low  = 0;

            switch (tag.TagType)
            {
            case UnderlyingSystemTagType.Analog: {
                if (tag.EuRange != null && tag.EuRange.Length >= 2)
                {
                    high = (int)tag.EuRange[0];
                    low  = (int)tag.EuRange[1];
                }

                break;
            }

            case UnderlyingSystemTagType.Digital: {
                high = 1;
                low  = 0;
                break;
            }

            case UnderlyingSystemTagType.Enumerated: {
                if (tag.Labels != null && tag.Labels.Length > 0)
                {
                    high = tag.Labels.Length - 1;
                    low  = 0;
                }

                break;
            }
            }

            // select a value in the range.
            var value = -1;

            if (high > low)
            {
                value = (generator.GetRandomUInt16() % (high - low + 1)) + low;
            }

            // cast value to correct type or generate a random value.
            switch (tag.DataType)
            {
            case UnderlyingSystemDataType.Integer1: {
                if (value == -1)
                {
                    tag.Value = generator.GetRandomSByte();
                }
                else
                {
                    tag.Value = (sbyte)value;
                }

                break;
            }

            case UnderlyingSystemDataType.Integer2: {
                if (value == -1)
                {
                    tag.Value = generator.GetRandomInt16();
                }
                else
                {
                    tag.Value = (short)value;
                }

                break;
            }

            case UnderlyingSystemDataType.Integer4: {
                if (value == -1)
                {
                    tag.Value = generator.GetRandomInt32();
                }
                else
                {
                    tag.Value = value;
                }

                break;
            }

            case UnderlyingSystemDataType.Real4: {
                if (value == -1)
                {
                    tag.Value = generator.GetRandomFloat();
                }
                else
                {
                    tag.Value = (float)value;
                }

                break;
            }

            case UnderlyingSystemDataType.String: {
                tag.Value = generator.GetRandomString();
                break;
            }
            }

            tag.Timestamp = DateTime.UtcNow;
            return(true);
        }