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HomeTechnologyCommon API Entry from Postgres and SQLite – O’Reilly

Common API Entry from Postgres and SQLite – O’Reilly


In “SQL: The Common Solvent for REST APIs” we noticed how Steampipe’s suite of open supply plug-ins that translate REST API calls straight into SQL tables. These plug-ins have been, till lately, tightly certain to the open supply engine and to the occasion of Postgres that it launches and controls. That led members of the Steampipe group to ask: “Can we use the plug-ins in our personal Postgres databases?” Now the reply is sure—and extra—however let’s concentrate on Postgres first.

NOTE: Every Steampipe plugin ecosystem is now additionally a standalone foreign-data-wrapper extension for Postgres, a virtual-table extension for SQLite, and an export software.


Be taught quicker. Dig deeper. See farther.

Utilizing a Steampipe Plugin as a Standalone Postgres Overseas Information Wrapper (FDW)

Go to Steampipe downloads to search out the installer in your OS, and run it to amass the Postgres FDW distribution of a plugin—on this case, the GitHub plugin. It’s one among (at the moment) 140 plug-ins obtainable on the Steampipe hub. Every plugin offers a set of tables that map API calls to database tables—within the case of the GitHub plugin, 55 such tables. Every desk can seem in a FROM or JOIN clause; right here’s a question to pick columns from the GitHub problem, filtering on a repository and creator.

choose
  state,
  updated_at,
  title,
  url
from
  github_issue
the place
  repository_full_name="turbot/steampipe"
  and author_login = 'judell'
order by
  updated_at desc

When you’re utilizing Steampipe, you’ll be able to set up the GitHub plugin like this:

steampipe plugin set up github

then run the question within the Steampipe CLI or in any Postgres consumer that may hook up with Steampipe’s occasion of Postgres.

However if you wish to do the identical factor in your individual occasion of Postgres, you’ll be able to set up the plugin differently.

$ sudo /bin/sh -c "$(
   curl -fsSL https://steampipe.io/set up/postgres.sh)"
Enter the plugin identify: github
Enter the model (newest): 

Found:
- PostgreSQL model:   14
- PostgreSQL location:  /usr/lib/postgresql/14
- Working system:     Linux
- System structure:  x86_64

Based mostly on the above, steampipe_postgres_github.pg14.linux_amd64.tar.gz
shall be downloaded, extracted and put in at: /usr/lib/postgresql/14

Proceed with putting in Steampipe PostgreSQL FDW for model 14 at
 /usr/lib/postgresql/14?
- Press 'y' to proceed with the present model.
- Press 'n' to customise your PostgreSQL set up listing 
and choose a distinct model. (Y/n): 


Downloading steampipe_postgres_github.pg14.linux_amd64.tar.gz...
###############################################################
############################ 100.0%
steampipe_postgres_github.pg14.linux_amd64/
steampipe_postgres_github.pg14.linux_amd64/steampipe_postgres_
github.so
steampipe_postgres_github.pg14.linux_amd64/steampipe_postgres_
github.management
steampipe_postgres_github.pg14.linux_amd64/steampipe_postgres_
github--1.0.sql
steampipe_postgres_github.pg14.linux_amd64/set up.sh
steampipe_postgres_github.pg14.linux_amd64/README.md

Obtain and extraction accomplished.

Putting in steampipe_postgres_github in /usr/lib/postgresql/14...

Efficiently put in steampipe_postgres_github extension!

Information have been copied to:
- Library listing: /usr/lib/postgresql/14/lib
- Extension listing: /usr/share/postgresql/14/extension/

Now hook up with your server as normal, utilizing psql or one other consumer, most usually because the postgres person. Then run these instructions, that are typical for any Postgres overseas knowledge wrapper. As with all Postgres extensions, you begin like this:

CREATE EXTENSION steampipe_postgres_fdw_github;

To make use of a overseas knowledge wrapper, you first create a server:

CREATE SERVER steampipe_github FOREIGN DATA WRAPPER
steampipe_postgres_github OPTIONS (config 'token="ghp_..."');

Use OPTIONS to configure the extension to make use of your GitHub entry token. (Alternatively, the usual atmosphere variables used to configure a Steampipe plugin—it’s simply GITHUB_TOKEN on this case—will work if you happen to set them earlier than beginning your occasion of Postgres.)

The tables offered by the extension will stay in a schema, so outline one:

CREATE SCHEMA github;

Now import the schema outlined by the overseas server into the native schema you simply created:

IMPORT FOREIGN SCHEMA github FROM SERVER steampipe_github INTO github;

Now run a question!

The overseas tables offered by the extension stay within the github schema, so by default you’ll seek advice from tables like github.github_my_repository. When you set search_path="github", although, the schema turns into non-compulsory and you may write queries utilizing unqualified desk names. Right here’s a question we confirmed final time. It makes use of the GitHub_search_repository which encapsulates the GitHub API for looking repositories.

Suppose you’re on the lookout for repos associated to PySpark. Right here’s a question to search out repos whose names match “pyspark” and report just a few metrics that will help you gauge exercise and recognition.

choose
  name_with_owner,
  updated_at,     -- how lately up to date?
  stargazer_count -- how many individuals starred the repo?
from 
  github_search_repository 
the place 
  question = 'pyspark in:identify' 
order by
  stargazer_count desc
restrict 10;
+---------------------------------------+------------+---------------+
|name_with_owner                        |updated_at  |stargazer_count|
+---------------------------------------+------------+---------------+
| AlexIoannides/pyspark-example-project | 2024-02-09 | 1324          |
| mahmoudparsian/pyspark-tutorial       | 2024-02-11 | 1077          |
| spark-examples/pyspark-examples       | 2024-02-11 | 1007          |
| palantir/pyspark-style-guide          | 2024-02-12 | 924           |
| pyspark-ai/pyspark-ai                 | 2024-02-12 | 791           |
| lyhue1991/eat_pyspark_in_10_days      | 2024-02-01 | 719           |
| UrbanInstitute/pyspark-tutorials      | 2024-01-21 | 400           |
| krishnaik06/Pyspark-With-Python       | 2024-02-11 | 400           |
| ekampf/PySpark-Boilerplate            | 2024-02-11 | 388           |
| commoncrawl/cc-pyspark                | 2024-02-12 | 361           |
+---------------------------------------+------------+---------------+

When you have numerous repos, the primary run of that question will take just a few seconds. The second run will return outcomes immediately, although, as a result of the extension features a highly effective and complicated cache.

And that’s all there’s to it! Each Steampipe plugin is now additionally a overseas knowledge wrapper that works precisely like this one. You’ll be able to load a number of extensions with a purpose to be a part of throughout APIs. After all, you’ll be able to be a part of any of those API-sourced overseas tables with your individual Postgres tables. And to save lots of the outcomes of any question, you’ll be able to prepend “create desk NAME as” or “create materialized view NAME as” to a question to persist outcomes as a desk or view.

Utilizing a Steampipe Plugin as a SQLite Extension That Supplies Digital Tables

Go to Steampipe downloads to search out the installer in your OS and run it to amass the SQLite distribution of the identical plugin.

$ sudo /bin/sh -c "$(curl -fsSL https://steampipe.io/set up/sqlite.sh)"
Enter the plugin identify: github
Enter model (newest): 
Enter location (present listing): 

Downloading steampipe_sqlite_github.linux_amd64.tar.gz...
############################################################
################ 100.0%
steampipe_sqlite_github.so

steampipe_sqlite_github.linux_amd64.tar.gz downloaded and 
extracted efficiently at /dwelling/jon/steampipe-sqlite.

Right here’s the setup, and you may place this code in ~/.sqliterc if you wish to run it each time you begin sqlite.

.load /dwelling/jon/steampipe-sqlite/steampipe_sqlite_github.so

choose steampipe_configure_github('
  token="ghp_..."
');

Now you’ll be able to run the identical question as above. Right here, too, the outcomes are cached, so a second run of the question shall be prompt.

What concerning the variations between Postgres-flavored and SQLite-flavored SQL? The Steampipe hub is your good friend! For instance, listed here are Postgres and SQLite variants of a question that accesses a subject inside a JSON column with a purpose to tabulate the languages related along with your gists.

Postgres

SQLite

The github_my_gist desk studies particulars about gists that belong to the GitHub person who’s authenticated to Steampipe. The language related to every gist lives in a JSONB column known as recordsdata, which comprises an inventory of objects like this.

{
   "dimension": 24541,
   "kind": "textual content/markdown",
   "raw_url": "https://gist.githubusercontent.com/judell/49d66ca2a5d2a3b
   "filename": "steampipe-readme-update.md",
   "language": "Markdown"
}

The features wanted to mission that record as rows differ: in Postgres you employ jsonb_array_elements and in SQLite it’s json_each.

As with Postgres extensions, you’ll be able to load a number of SQLite extensions with a purpose to be a part of throughout APIs. You’ll be able to be a part of any of those API-sourced overseas tables with your individual SQLite tables. And you’ll prepend create desk NAME as to a question to persist outcomes as a desk.

Utilizing a Steampipe Plugin as a Standalone Export Device

Go to Steampipe downloads to search out the installer in your OS, and run it to amass the export distribution of a plugin—once more, we’ll illustrate utilizing the GitHub plugin.

$ sudo /bin/sh -c "$(curl -fsSL https://steampipe.io/set up/export.sh)"
Enter the plugin identify: github
Enter the model (newest): 
Enter location (/usr/native/bin): 
Created non permanent listing at /tmp/tmp.48QsUo6CLF.

Downloading steampipe_export_github.linux_amd64.tar.gz...
##########################################################
#################### 100.0%
Deflating downloaded archive
steampipe_export_github
Putting in
Making use of mandatory permissions
Eradicating downloaded archive
steampipe_export_github was put in efficiently to
/usr/native/bin
$ steampipe_export_github -h
Export knowledge utilizing the github plugin.

Discover detailed utilization info together with desk names, 
column names, and examples on the Steampipe Hub:
https://hub.steampipe.io/plugins/turbot/github

Utilization:
  steampipe_export_github TABLE_NAME [flags]

Flags:
      --config string       Config file knowledge
  -h, --help                assist for steampipe_export_github
      --limit int           Restrict knowledge
      --output string       Output format: csv, json or jsonl 
(default "csv")
      --select strings      Column knowledge to show
      --where stringArray   the place clause knowledge

There’s no SQL engine within the image right here; this software is only an exporter. To export all of your gists to a JSON file:

steampipe_export_github github_my_gist --output json > gists.json

To pick out just some columns and export to a CSV file:

steampipe_export_github github_my_gist --output csv --select
 "description,created_at,html_url" > gists.csv

You should use --limit to restrict the rows returned and --where to filter them, however largely you’ll use this software to shortly and simply seize knowledge that you simply’ll therapeutic massage elsewhere, for instance, in a spreadsheet.

Faucet into the Steampipe Plugin Ecosystem

Steampipe plug-ins aren’t simply uncooked interfaces to underlying APIs. They use tables to mannequin these APIs in helpful methods. For instance, the github_my_repository desk exemplifies a design sample that applies persistently throughout the suite of plug-ins. From the GitHub plugin’s documentation:

You’ll be able to personal repositories individually, or you’ll be able to share possession of repositories with different individuals in a company. The github_my_repository desk will record repos that you simply personal, that you simply collaborate on, or that belong to your organizations. To question ANY repository, together with public repos, use the github_repository desk.

Different plug-ins comply with the identical sample. For instance, the Microsoft 365 plugin offers each microsoft_my_mail_message and microsoft_mail_message, and the plugin offers googleworkspace_my_gmail_message and googleworkspace_gmail. The place attainable, plug-ins consolidate views of assets from the attitude of an authenticated person.

Whereas plug-ins usually present tables with fastened schemas, that’s not all the time the case. Dynamic schemas, carried out by the AirtableCSVKubernetes, and Salesforce plug-ins (amongst others) are one other key sample. Right here’s a CSV instance utilizing a standalone Postgres FDW.

IMPORT FOREIGN SCHEMA csv FROM SERVER steampipe_csv INTO csv 
 OPTIONS(config 'paths=["/home/jon/csv"]');

Now all of the .csv recordsdata in /dwelling/jon/csv will automagically be Postgres overseas tables. Suppose you retain observe of legitimate house owners of EC2 cases in a file known as ec2_owner_tags. Right here’s a question in opposition to the corresponding desk.

choose * from csv.ec2_owner_tags;
     proprietor      |            _ctx
----------------+----------------------------
 Pam Beesly     | {"connection_name": "csv"}
 Dwight Schrute | {"connection_name": "csv"}

You could possibly be a part of that desk with the AWS plugin’s aws_ec2_instance desk to report proprietor tags on EC2 cases which can be (or should not) listed within the CSV file.

choose 
    ec2.proprietor,
    case 
        when csv.proprietor is null then 'false'
        else 'true'
    finish as is_listed
from 
    (choose distinct tags ->> 'proprietor' as proprietor 
     from aws.aws_ec2_instance) ec2
left be a part of 
    csv.ec2_owner_tags csv on ec2.proprietor = csv.proprietor;
     proprietor      | is_listed
----------------+-----------
 Dwight Schrute | true
 Michael Scott  | false

Throughout the suite of plug-ins there are greater than 2,300 predefined fixed-schema tables that you need to use in these methods, plus a limiteless variety of dynamic tables. And new plug-ins are consistently being added by Turbot and by Steampipe’s open supply group. You’ll be able to faucet into this ecosystem utilizing Steampipe or Turbot Pipes, from your individual Postgres or SQLite database, or straight from the command line.



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