odd-collector

ODD Collector is a lightweight service that gathers metadata from all your data sources.

To learn more about collector types and ODD Platform's architecture, read the documentation.

Preview:

• Implemented adapters
• Class diagramm
• Building
• M1 building issue
• Docker compose example

Implemented adapters

Service	Config example
Cassandra	config
ClickHouse	config
Dbt	config
Elasticsearch	config
Feast	config
Hive	config
Kafka	config
Kubeflow	config
MariaDB	config, supported via MySql adapter
MongoDB	config
MSSql	config
MySql	config
Neo4j	config
PostgreSQL	config
Presto	config
Redash	config
Redshift	config
Snowflake	config
Superset	config
Tableau	config
Tarantool	config
Trino	config
Vertica	config
ODBC	config, README.md
Cube	config
ODD Adapter	config
Druid Adapter	config
Oracle	config

Class diagram of adapter class hierarchy

This may help you to understand which fields you need for each adapter in collector_config.yaml and also may be helpful for a new adapter developer.

PlantUML code for above diagram: domain_classes.plantuml

To regenerate picture, you have 2 options:

1. Having PlantUML installed locally, do

java -jar plantuml.jar domain_classes.plantuml

2. Use PyCharm or other IDE's PlantUML plugin

Building

docker build .

M1 building issue

libraries pyodbc , confluent-kafka and grpcio have problem during installing and building project on Mac M1.

• mkleehammer/pyodbc#846
• confluentinc/confluent-kafka-python#1190
• grpc/grpc#25082

Possible solutions

# NOTE: be aware of versions
# NOTE: easiest way is to add all export statements to your .bashrc/.zshrc file

# pyodbc dependencies
brew install unixodbc freetds openssl

export LDFLAGS="-L/opt/homebrew/lib  -L/opt/homebrew/Cellar/unixodbc/2.3.11/include -L/opt/homebrew/opt/freetds/lib -L/opt/homebrew/opt/openssl@3/lib"
export CFLAGS="-I/opt/homebrew/Cellar/unixodbc/2.3.11/include -I/opt/homebrew/opt/freetds/include"
export CPPFLAGS="-I/opt/homebrew/include -I/opt/homebrew/Cellar/unixodbc/2.3.11/include -I/opt/homebrew/opt/openssl@3/include"

# cunfluent-kafka
brew install librdkafka

export C_INCLUDE_PATH=/opt/homebrew/Cellar/librdkafka/1.9.0/include
export LIBRARY_PATH=/opt/homebrew/Cellar/librdkafka/1.9.0/lib
export PATH="/opt/homebrew/opt/openssl@3/bin:$PATH"

# grpcio
export GRPC_PYTHON_BUILD_SYSTEM_OPENSSL=1
export GRPC_PYTHON_BUILD_SYSTEM_ZLIB=1

Docker compose example

Custom .env file for docker-compose.yaml

LOGLEVEL=DEBUG
PLATFORM_HOST_URL=http://odd-platform:8080
POSTGRES_PASSWORD=postgres_password_secret

There are 3 options for config field pass:

1. Explicitly set it in collector_config.yaml file, i.e database: odd-platform-db
2. Use .env file or ENV variables
3. In situation when plugins have same field names, we can explicitly set ENV variable to collector_config.yaml, i.e. password: !ENV ${POSTGRES_PASSWORD}

Custom collector-config.yaml

platform_host_url: http://localhost:8080
default_pulling_interval: 10
token: ""
plugins:
  - type: postgresql
    name: test_postgresql_adapter
    host: "localhost"
    port: 5432
    database: "some_database_name"
    user: "some_user_name"
    password: !ENV ${POSTGRES_PASSWORD}
  - type: mysql
    name: test_mysql_adapter
    host: "localhost"
    port: 3306
    database: "some_database_name"
    user: "some_user_name"
    password: "some_password"

docker-compose.yaml

version: "3.8"
services:
  # --- ODD Platform ---
  database:
    ...
  odd-platform:
    ...
  
  odd-collector:
    image: ghcr.io/opendatadiscovery/odd-collector:latest
    restart: always
    volumes:
      - collector_config.yaml:/app/collector_config.yaml
    environment:
      - PLATFORM_HOST_URL=${PLATFORM_HOST_URL}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    depends_on:
      - odd-platform