added gzip-dumper; updated readme

.dockerignore

@@ -11,3 +11,4 @@ query_db.sh
 **/*.pyc
 Dockerfile
 docker-compose.yml
+/block_dump_*

.gitignore

@@ -5,3 +5,4 @@ databases/
 env/
 .bash_history
 .cache/
+/block_dump_*

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3-alpine
+FROM python:3.10-alpine
 LABEL maintainer="Christian Mehlmauer <[email protected]>"
 
 RUN adduser -h /app -g app -D app

Readme.md

@@ -27,7 +27,7 @@ docker pull firefart/network_info
 docker run --rm firefart/network_info -c postgresql://user:pass@db:5432/network_info
 ```
 
-Or cou can connect the docker container to another database container.
+Or you can connect the docker container to another database container.
 
 ```sh
 docker run --name network_info_db -e POSTGRES_DB=network_info -e POSTGRES_USER=network_info -e POSTGRES_PASSWORD=network_info -d postgres:9-alpine
@@ -222,3 +222,11 @@ created       |
 last_modified | 2008-09-04 06:51:49
 source        | apnic
 ```
+
+# Export block table
+
+If you need to export data from PG to another source (Clickhouse, Elasticsearch, etc.) you can use:
+```
+./bin/export_to_gzip. 
+```
+A compressed CSV file will be created.

bin/export_to_gzip

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+docker rm -f dumper
+docker-compose run -e PGPASSWORD=network_info --name dumper --entrypoint=psql db -h db -U network_info -e -q -x -c "copy block TO stdout  DELIMITER ';' CSV HEADER ;" network_info | gzip > ./block_dump_`date +"%Y-%m-%d"`.csv.gz
+docker rm -f dumper