DolphinDB

Name	DolphinDB
Version	v1.0.0
DockerHub	weevenetwork/dolphindb
Authors	Jakub Grzelak

• DolphinDB
  • Description
  • Environment Variables
    • Module Specific
    • Set by the weeve Agent on the edge-node
  • Dependencies
  • Input
  • Output

Description

Write data to your chosen DolphinDB table.

Environment Variables

Module Specific

The following module configurations can be provided in a data service designer section on weeve platform:

Name	Environment Variables	type	Description
Host	HOST	string	Host of DolphinDB server.
Port	PORT	integer	Port of DolphinDB server.
Username	USERNAME	string	Your DolphinDB username.
Password	PASSWORD	string	Your DolphinDB password.
Database Path	DB_PATH	string	Your database path.
Table Name	TABLE_NAME	string	Table to write data to.
Database Columns	COLUMNS	string	List of comma (,) separated database columns headers to write to.
Data Labels	LABELS	string	List of comma (,) separated labels in passed data. Order of labels must match the order of provided corresponding columns.
Date Column	DATE_COLUMN	string	Name of column in database that holds date or timestamp (optional).

Set by the weeve Agent on the edge-node

Other features required for establishing the inter-container communication between modules in a data service are set by weeve agent.

Environment Variables	type	Description
MODULE_NAME	string	Name of the module
MODULE_TYPE	string	Type of the module (Input, Processing, Output)
INGRESS_HOST	string	Host to which data will be received
INGRESS_PORT	string	Port to which data will be received

Dependencies

bottle
dolphindb
pandas
numpy

Input

Input to this module is:

• JSON body single object, example:

{
    "label-1": 12,
    "label-2": "speed"
}

• array of JSON body objects, example:

[
    {
        "label-1": 12,
        "label-2": "speed"
    },
    {
        "label-1": 15,
        "label-2": "volume"
    }
]

Output

Output of this module are records written to the selected DolphinDB table.