Airflow DAGs for my Podcast Analysis Tool.
Intended as a proof of concept, to show how to connect Airflow to a data pipeline.
astro dev start
View your DAGs at http://localhost:8080.
(Watch out, if Zeppelin is running this is the same port so there can be conflict).
https://www.astronomer.io/docs/customizing-your-image/
- https://pkgs.alpinelinux.org/packages
- if make changes, just run
astro dev stop && astro dev startto rebuild - (these commands run on top of docker compose)
- don't put any comments in that thing, as far as I can tell. requirements.txt can use
#for comments, not packages.txt
Setup to connect to Cassandra running on Datastax Enterprise.
Potentially will get this in the DAG log:
[2020-06-10 12:20:29,264] {bash_operator.py:115} INFO - Running command: sleep $[ ( $RANDOM % 30 ) + 1 ]s && java -jar /podcast-analysis-tool-0.2.0.jar
[2020-06-10 12:20:29,273] {bash_operator.py:124} INFO - Output:
[2020-06-10 12:20:34,423] {bash_operator.py:128} INFO - Running with options:
[2020-06-10 12:20:35,242] {bash_operator.py:128} INFO - 0 [main] INFO com.datastax.oss.driver.internal.core.DefaultMavenCoordinates - DataStax Java driver for Apache Cassandra(R) (com.datastax.oss:java-driver-core) version 4.6.1
[2020-06-10 12:20:36,103] {bash_operator.py:128} INFO - 861 [s0-admin-0] INFO com.datastax.oss.driver.internal.core.time.Clock - Using native clock for microsecond precision
[2020-06-10 12:20:36,111] {bash_operator.py:128} INFO - 870 [s0-admin-0] INFO com.datastax.oss.driver.internal.core.metadata.MetadataManager - [s0] No contact points provided, defaulting to /127.0.0.1:9042
[2020-06-10 12:20:36,412] {bash_operator.py:128} INFO - 1171 [s0-admin-1] WARN com.datastax.oss.driver.internal.core.control.ControlConnection - [s0] Error connecting to Node(endPoint=/127.0.0.1:9042, hostId=null, hashCode=736bcf54), trying next node (ConnectionInitException: [s0|control|connecting...] Protocol initialization request, step 1 (OPTIONS): failed to send request (java.nio.channels.ClosedChannelException))
[2020-06-10 12:20:36,765] {bash_operator.py:132} INFO - Command exited with return code 0
[2020-06-10 12:20:39,113] {logging_mixin.py:112} INFO - [2020-06-10 12:20:39,113] {local_task_job.py:103} INFO - Task exited with return code 0This means everything is set up correctly, but you don't have DSE/Cassandra running on your local node.
And I think that's good enough for a proof of concept. Stopping there for now
Copyright (c) 2020 Ryan Quey.
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