# Retrieve data from OPCUA devices
[[inputs.opcua_listener]]
  ## Metric name
  # name = "opcua_listener"
  #
  ## OPC UA Endpoint URL
  # endpoint = "opc.tcp://localhost:4840"
  #
  ## Maximum time allowed to establish a connect to the endpoint.
  # connect_timeout = "10s"
  #
  ## Behavior when we fail to connect to the endpoint on initialization. Valid options are:
  ##     "error": throw an error and exits Telegraf
  ##     "ignore": ignore this plugin if errors are encountered
  #      "retry": retry connecting at each interval
  # connect_fail_behavior = "error"
  #
  ## Maximum time allowed for a request over the established connection.
  # request_timeout = "5s"
  #
  # Maximum time that a session shall remain open without activity.
  # session_timeout = "20m"
  #
  ## The interval at which the server should at least update its monitored items.
  ## Please note that the OPC UA server might reject the specified interval if it cannot meet the required update rate.
  ## Therefore, always refer to the hardware/software documentation of your server to ensure the specified interval is supported.
  # subscription_interval = "100ms"
  #
  ## Security policy, one of "None", "Basic128Rsa15", "Basic256",
  ## "Basic256Sha256", or "auto"
  # security_policy = "auto"
  #
  ## Security mode, one of "None", "Sign", "SignAndEncrypt", or "auto"
  # security_mode = "auto"
  #
  ## Path to cert.pem. Required when security mode or policy isn't "None".
  ## If cert path is not supplied, self-signed cert and key will be generated.
  # certificate = "/etc/telegraf/cert.pem"
  #
  ## Path to private key.pem. Required when security mode or policy isn't "None".
  ## If key path is not supplied, self-signed cert and key will be generated.
  # private_key = "/etc/telegraf/key.pem"
  #
  ## Authentication Method, one of "Certificate", "UserName", or "Anonymous".  To
  ## authenticate using a specific ID, select 'Certificate' or 'UserName'
  # auth_method = "Anonymous"
  #
  ## Username. Required for auth_method = "UserName"
  # username = ""
  #
  ## Password. Required for auth_method = "UserName"
  # password = ""
  #
  ## Option to select the metric timestamp to use. Valid options are:
  ##     "gather" -- uses the time of receiving the data in telegraf
  ##     "server" -- uses the timestamp provided by the server
  ##     "source" -- uses the timestamp provided by the source
  # timestamp = "gather"
  #
  ## The default timetsamp format is RFC3339Nano
  # Other timestamp layouts can be configured using the Go language time
  # layout specification from https://golang.org/pkg/time/#Time.Format
  # e.g.: json_timestamp_format = "2006-01-02T15:04:05Z07:00"
  #timestamp_format = ""
  #
  #
  ## Client trace messages
  ## When set to true, and debug mode enabled in the agent settings, the OPCUA
  ## client's messages are included in telegraf logs. These messages are very
  ## noisey, but essential for debugging issues.
  # client_trace = false
  #
  ## Include additional Fields in each metric
  ## Available options are:
  ##   DataType -- OPC-UA Data Type (string)
  # optional_fields = []
  #
  ## Node ID configuration
  ## name              - field name to use in the output
  ## namespace         - OPC UA namespace of the node (integer value 0 thru 3)
  ## identifier_type   - OPC UA ID type (s=string, i=numeric, g=guid, b=opaque)
  ## identifier        - OPC UA ID (tag as shown in opcua browser)
  ## default_tags      - extra tags to be added to the output metric (optional)
  ## monitoring_params - additional settings for the monitored node (optional)
  ##
  ## Monitoring parameters
  ## sampling_interval  - interval at which the server should check for data
  ##                      changes (default: 0s)
  ## queue_size         - size of the notification queue (default: 10)
  ## discard_oldest     - how notifications should be handled in case of full
  ##                      notification queues, possible values:
  ##                      true: oldest value added to queue gets replaced with new
  ##                            (default)
  ##                      false: last value added to queue gets replaced with new
  ## data_change_filter - defines the condition under which a notification should
  ##                      be reported
  ##
  ## Data change filter
  ## trigger        - specify the conditions under which a data change notification
  ##                  should be reported, possible values:
  ##                  "Status": only report notifications if the status changes
  ##                            (default if parameter is omitted)
  ##                  "StatusValue": report notifications if either status or value
  ##                                 changes
  ##                  "StatusValueTimestamp": report notifications if either status,
  ##                                          value or timestamp changes
  ## deadband_type  - type of the deadband filter to be applied, possible values:
  ##                  "Absolute": absolute change in a data value to report a notification
  ##                  "Percent": works only with nodes that have an EURange property set
  ##                             and is defined as: send notification if
  ##                             (last value - current value) >
  ##                             (deadband_value/100.0) * ((high–low) of EURange)
  ## deadband_value - value to deadband_type, must be a float value, no filter is set
  ##                  for negative values
  ##
  ## Use either the inline notation or the bracketed notation, not both.
  #
  ## Inline notation (default_tags and monitoring_params not supported yet)
  # nodes = [
  #   {name="node1", namespace="", identifier_type="", identifier=""},
  #   {name="node2", namespace="", identifier_type="", identifier=""}
  # ]
  #
  ## Bracketed notation
  # [[inputs.opcua_listener.nodes]]
  #   name = "node1"
  #   namespace = ""
  #   identifier_type = ""
  #   identifier = ""
  #   default_tags = { tag1 = "value1", tag2 = "value2" }
  #
  # [[inputs.opcua_listener.nodes]]
  #   name = "node2"
  #   namespace = ""
  #   identifier_type = ""
  #   identifier = ""
  #
  #   [inputs.opcua_listener.nodes.monitoring_params]
  #     sampling_interval = "0s"
  #     queue_size = 10
  #     discard_oldest = true
  #
  #     [inputs.opcua_listener.nodes.monitoring_params.data_change_filter]
  #       trigger = "Status"
  #       deadband_type = "Absolute"
  #       deadband_value = 0.0
  #
  ## Node Group
  ## Sets defaults so they aren't required in every node.
  ## Default values can be set for:
  ## * Metric name
  ## * OPC UA namespace
  ## * Identifier
  ## * Default tags
  ## * Sampling interval
  ##
  ## Multiple node groups are allowed
  #[[inputs.opcua_listener.group]]
  ## Group Metric name. Overrides the top level name.  If unset, the
  ## top level name is used.
  # name =
  #
  ## Group default namespace. If a node in the group doesn't set its
  ## namespace, this is used.
  # namespace =
  #
  ## Group default identifier type. If a node in the group doesn't set its
  ## namespace, this is used.
  # identifier_type =
  #
  ## Default tags that are applied to every node in this group. Can be
  ## overwritten in a node by setting a different value for the tag name.
  ##   example: default_tags = { tag1 = "value1" }
  # default_tags = {}
  #
  ## Group default sampling interval. If a node in the group doesn't set its
  ## sampling interval, this is used.
  # sampling_interval = "0s"
  #
  ## Node ID Configuration.  Array of nodes with the same settings as above.
  ## Use either the inline notation or the bracketed notation, not both.
  #
  ## Inline notation (default_tags and monitoring_params not supported yet)
  # nodes = [
  #  {name="node1", namespace="", identifier_type="", identifier=""},
  #  {name="node2", namespace="", identifier_type="", identifier=""}
  #]
  #
  ## Bracketed notation
  # [[inputs.opcua_listener.group.nodes]]
  #   name = "node1"
  #   namespace = ""
  #   identifier_type = ""
  #   identifier = ""
  #   default_tags = { tag1 = "override1", tag2 = "value2" }
  #
  # [[inputs.opcua_listener.group.nodes]]
  #   name = "node2"
  #   namespace = ""
  #   identifier_type = ""
  #   identifier = ""
  #
  #   [inputs.opcua_listener.group.nodes.monitoring_params]
  #     sampling_interval = "0s"
  #     queue_size = 10
  #     discard_oldest = true
  #
  #     [inputs.opcua_listener.group.nodes.monitoring_params.data_change_filter]
  #       trigger = "Status"
  #       deadband_type = "Absolute"
  #       deadband_value = 0.0
  #

  ## Enable workarounds required by some devices to work correctly
  # [inputs.opcua_listener.workarounds]
    ## Set additional valid status codes, StatusOK (0x0) is always considered valid
    # additional_valid_status_codes = ["0xC0"]

  # [inputs.opcua_listener.request_workarounds]
    ## Use unregistered reads instead of registered reads
    # use_unregistered_reads = false
