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Database Schema

Overview

Initial graph based on :doc:`adr/0007-database-technology`.

.. graphviz::

    digraph G {
        concentrate=true;

        {
            service [label=<<U>Service</U>>]

            serviceInterface [label=<<U>Service Interface</U>>]

            application [label=<<U>Application</U>, <U>Service</U>>]

            deployInfo [label="Deploy Information", shape=plaintext]
            vizData [label="Visualization Data", shape=plaintext]
        }

        service -> service [label="depends on; predecessor", constraint=false]

        service -> serviceInterface [label=has, headlabel="1..n", taillabel=1]

        application -> {deployInfo, vizData} [dir=none, constraint=false]

        application -> service [label=includes, headlabel="1..n", taillabel=1]

    }

Service

Attributes describing a :term:`MICO Service` are mainly taken from Pivio.

Attribute Description Example
ID* UUID (Unique for every version) :samp:`7e7e1828-e845-11e8-9f32-f2801f1b9fd1`
shortName* Unique short name (java Package Style) :samp:`de.uni-stuttgart.mico.hello-world`
name* Display name Hello World
description* Human readable description of the service A simple Hello World Service.
version* Semantic version version number, commit hash or revision :samp:`1.0.2`, :samp:`1.2.0a`, :samp:`d99ada433bb1d69571...`
vcsroot Url to vcs root (e.g. GitHub link with branch) :samp:`https://github.com/UST-MICO/mico`
dockerfile Path to dockerfile relative to vcsroot :samp:`mico-core/Dockerfile`
contact Human readable contact information. :samp:`Max Musterman, [email protected]`
tags To be defined  
links To be defined  
owner Human readable team information. :samp:`Max Musterman, Company Y`
externalService A boolean which indicates if a service is external :samp:`true` 
.. todo:: Define Tags, Check if lifecycle and links is needed

DependsOn

DependsOn is an edge between two services. A service depends on another service. Additionally, it provides the attribute version. This attribute allows to implement an auto-update feature. It contains a version string in the semantic version format. This allows to determine the most recent compatible service.

Service Interface

Attribute Description Example
serviceInterfaceName* Unique short name suffix for :samp:`shortName` of service. :samp:`rest`
description* Human readable description :samp:`This is a service interface`
port* This is a port number or a variable name :samp:`1024`
protocol* The name of the protocol which is supported by this interface :samp:`gRPC`, :samp:`SQL`, :samp:`CYPHER`
transport_protocol* This protocol is used to transport the previous protocol :samp:`http`, :samp:`mqtt`
public_dns* To be defined   
.. todo:: Define Tag public_dns

Application

Because an application is a service itself it also includes all attributes of a service even when not explicitly stated in the table.

Attribute Description Example
ID* UUID (Unique for every version) :samp:`7e7e1828-e845-11e8-9f32-f2801f1b9fd1` 
.. todo:: Add necessary attributes for deployments, list all attributes

Possible Nodes and Relationships

res/MICO-NodesAndRelationships.png