<p align="center"><img src="https://github.com/slingdata-io/sling-python/raw/main/logo-with-text.png" alt="logo" width="250"/></p>
<p align="center">Slings from a data source to a data target.</p>
## Installation
`pip install sling`
Then you should be able to run `sling --help` from command line.
## Running a Extract-Load Task
### CLI
```shell
sling run --src-conn MY_PG --src-stream myschema.mytable \
--tgt-conn YOUR_SNOWFLAKE --tgt-object yourschema.yourtable \
--mode full-refresh
```
Or passing a yaml/json string or file
```shell
cat '
source: MY_POSTGRES
target: MY_SNOWFLAKE
# default config options which apply to all streams
defaults:
mode: full-refresh
object: new_schema.{stream_schema}_{stream_table}
streams:
my_schema.*:
' > /path/to/replication.yaml
sling run -r /path/to/replication.yaml
```
### From Lib
Run a replication from file:
```python
import yaml
from sling import Replication
with open('path/to/replication.yaml') as file:
config = yaml.load(file, Loader=yaml.FullLoader)
replication = Replication(**config)
replication.run()
```
Build a replication dynamically:
```python
from sling import Replication, ReplicationStream
# build sling replication
streams = {}
for (folder, table_name) in list(folders):
streams[folder] = ReplicationStream(mode='full-refresh', object=table_name, primary_key='_hash_id')
replication = Replication(
source='aws_s3',
target='snowflake',
streams=streams,
env=dict(SLING_STREAM_URL_COLUMN='true', SLING_LOADED_AT_COLUMN='true'),
debug=True,
)
replication.run()
```
## Config Schema
`--src-conn`/`source.conn` and `--tgt-conn`/`target.conn` can be a name or URL of a folder:
- `MY_PG` (connection ref in db, profile or env)
- `postgresql://user:password!@host.loc:5432/database`
- `s3://my_bucket/my_folder/file.csv`
- `gs://my_google_bucket/my_folder/file.json`
- `file:///tmp/my_folder/file.csv` (local storage)
`--src-stream`/`source.stream` can be an object name to stream from:
- `TABLE1`
- `SCHEMA1.TABLE2`
- `OBJECT_NAME`
- `select * from SCHEMA1.TABLE3`
- `/path/to/file.sql` (if source conn is DB)
`--tgt-object`/`target.object` can be an object name to write to:
- `TABLE1`
- `SCHEMA1.TABLE2`
### Example as JSON
```json
{
"source": {
"conn": "MY_PG_URL",
"stream": "select * from my_table",
"options": {}
},
"target": {
"conn": "s3://my_bucket/my_folder/new_file.csv",
"options": {
"header": false
}
}
}
```
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"description": "<p align=\"center\"><img src=\"https://github.com/slingdata-io/sling-python/raw/main/logo-with-text.png\" alt=\"logo\" width=\"250\"/></p>\n\n<p align=\"center\">Slings from a data source to a data target.</p>\n\n## Installation\n\n`pip install sling`\n\nThen you should be able to run `sling --help` from command line.\n\n## Running a Extract-Load Task\n\n### CLI\n\n```shell\nsling run --src-conn MY_PG --src-stream myschema.mytable \\\n --tgt-conn YOUR_SNOWFLAKE --tgt-object yourschema.yourtable \\\n --mode full-refresh\n```\n\nOr passing a yaml/json string or file\n\n```shell\ncat '\nsource: MY_POSTGRES\ntarget: MY_SNOWFLAKE\n\n# default config options which apply to all streams\ndefaults:\n mode: full-refresh\n object: new_schema.{stream_schema}_{stream_table}\n\nstreams:\n my_schema.*:\n' > /path/to/replication.yaml\n\nsling run -r /path/to/replication.yaml\n```\n\n### From Lib\n\nRun a replication from file:\n\n```python\nimport yaml\nfrom sling import Replication\n\nwith open('path/to/replication.yaml') as file:\n config = yaml.load(file, Loader=yaml.FullLoader)\n\nreplication = Replication(**config)\n\nreplication.run()\n```\n\nBuild a replication dynamically:\n\n```python\nfrom sling import Replication, ReplicationStream\n\n# build sling replication\nstreams = {}\nfor (folder, table_name) in list(folders):\n streams[folder] = ReplicationStream(mode='full-refresh', object=table_name, primary_key='_hash_id')\n\nreplication = Replication(\n source='aws_s3',\n target='snowflake',\n streams=streams,\n env=dict(SLING_STREAM_URL_COLUMN='true', SLING_LOADED_AT_COLUMN='true'),\n debug=True,\n)\n\nreplication.run()\n```\n\n## Config Schema\n\n`--src-conn`/`source.conn` and `--tgt-conn`/`target.conn` can be a name or URL of a folder:\n- `MY_PG` (connection ref in db, profile or env)\n- `postgresql://user:password!@host.loc:5432/database`\n- `s3://my_bucket/my_folder/file.csv`\n- `gs://my_google_bucket/my_folder/file.json`\n- `file:///tmp/my_folder/file.csv` (local storage)\n\n`--src-stream`/`source.stream` can be an object name to stream from:\n- `TABLE1`\n- `SCHEMA1.TABLE2`\n- `OBJECT_NAME`\n- `select * from SCHEMA1.TABLE3`\n- `/path/to/file.sql` (if source conn is DB)\n\n`--tgt-object`/`target.object` can be an object name to write to:\n- `TABLE1`\n- `SCHEMA1.TABLE2`\n\n### Example as JSON\n\n```json\n{\n \"source\": {\n \"conn\": \"MY_PG_URL\",\n \"stream\": \"select * from my_table\",\n \"options\": {}\n },\n \"target\": {\n \"conn\": \"s3://my_bucket/my_folder/new_file.csv\",\n \"options\": {\n \"header\": false\n }\n }\n}\n```\n\n\n",
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