feat: add async support (#146)

Replace requests with niquests, and drop support for Python 3.6.

Author: Ousret

.github/workflows/test.yml

@@ -31,10 +31,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ["ubuntu-20.04"]
+        os: ["ubuntu-latest"]
         python-version: [
-          '3.6', '3.12',
-          'pypy-3.6', 'pypy-3.10',
+          '3.7', '3.12',
+          'pypy-3.7', 'pypy-3.10',
         ]
     steps:
       - uses: actions/checkout@v4
@@ -58,7 +58,7 @@ jobs:
           python -m pip install --editable=.[test,develop]
 
       - name: Check code style
-        if: matrix.python-version != '3.6' && matrix.python-version != 'pypy-3.6'
+        if: matrix.python-version != '3.7' && matrix.python-version != 'pypy-3.7'
         run: |
           poe lint
 

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## unreleased
 
+* Change the HTTP backend Requests for Niquests.
+  In certain conditions, you will need to adjust your code, as it no longer propagates
+  `requests.exceptions.Timeout` exceptions, but uses `GrafanaTimeoutError` instead.
+  [Niquests](https://github.com/jawah/niquests) is a drop-in replacement of Requests and therefore remains compatible.
+* Add asynchronous interface via `AsyncGrafanaClient`.
+* Remove Python 3.6 support.
 
 ## 3.11.2 (2024-03-07)
 

README.md

@@ -73,6 +73,31 @@ grafana.organization.create_organization(
     organization={"name": "new_organization"})
 ```
 
+Or using asynchronous code... the interfaces are identical except for the fact that you will handle coroutines (async/await).
+
+```python
+from grafana_client import AsyncGrafanaApi
+import asyncio
+
+async def main():
+    # Connect to Grafana API endpoint using the `GrafanaApi` class
+    grafana = AsyncGrafanaApi.from_url("https://username:password@daq.example.org/grafana/")
+    
+    # Create user
+    user = await grafana.admin.create_user({
+        "name": "User", 
+        "email": "user@example.org", 
+        "login": "user", 
+        "password": "userpassword", 
+        "OrgId": 1,
+    })
+    
+    # Change user password
+    user = await grafana.admin.change_user_password(2, "newpassword")
+
+asyncio.run(main())
+```
+
 ### Example programs
 
 There are complete example programs to get you started within the [examples
@@ -133,7 +158,7 @@ grafana = GrafanaApi.from_env()
 ```
 
 Please note that, on top of the specific examples above, the object obtained by
-`credential` can be an arbitrary `requests.auth.AuthBase` instance.
+`credential` can be an arbitrary `niquests.auth.AuthBase` instance.
 
 ## Selecting Organizations
 
@@ -166,14 +191,24 @@ scalar `float` value, or as a tuple of `(<read timeout>, <connect timeout>)`.
 
 ## Proxy
 
-The underlying `requests` library honors the `HTTP_PROXY` and `HTTPS_PROXY`
+The underlying `niquests` library honors the `HTTP_PROXY` and `HTTPS_PROXY`
 environment variables. Setting them before invoking an application using
 `grafana-client` has been confirmed to work. For example:
 ```
 export HTTP_PROXY=10.10.1.10:3128
 export HTTPS_PROXY=10.10.1.11:1080
 ```
 
+## DNS Resolver
+
+`niquests` support using a custom DNS resolver, like but not limited, DNS-over-HTTPS, and DNS-over-QUIC.
+You will have to set `NIQUESTS_DNS_URL` environment variable. For example:
+```
+export NIQUESTS_DNS_URL="doh+cloudflare://"
+```
+
+See the [documentation](https://niquests.readthedocs.io/en/latest/user/quickstart.html#set-dns-via-environment) to learn
+more about accepted URL parameters and protocols.
 
 ## Details
 

codecov.yml

@@ -8,3 +8,7 @@ coverage:
     patch:
       default:
         informational: true
+ignore:
+  - grafana_client/elements/_async/*
+  - test/*
+  - test/elements/*

docs/development.md

@@ -23,6 +23,16 @@ python -m unittest -k preference -vvv
 
 Before creating a PR, you can run `poe format`, in order to resolve code style issues.
 
+### Async code
+
+If you update any piece of code in `grafana_client/elements/*`, please run:
+
+```
+python script/generate_async.py
+```
+
+Do not edit files in `grafana_client/elements/_async/*` manually.
+
 ## Run Grafana
 ```
 docker run --rm -it --publish=3000:3000 --env='GF_SECURITY_ADMIN_PASSWORD=admin' grafana/grafana:9.3.6

examples/async-folders-dashboard.py

@@ -0,0 +1,53 @@
+"""
+About
+=====
+
+Example program for listing folders and getting a dashboard of a remote Grafana
+instance. By default, it uses `play.grafana.org`. Please adjust to your needs.
+
+
+Synopsis
+========
+::
+
+    source .venv/bin/activate
+    python examples/folders-dashboard.py | jq
+"""
+
+import asyncio
+import json
+import sys
+from time import perf_counter
+
+from grafana_client import AsyncGrafanaApi
+
+
+async def fetch_dashboard(grafana, uid):
+    print(f"## Dashboard with UID {uid} at play.grafana.org", file=sys.stderr)
+    dashboard = await grafana.dashboard.get_dashboard(uid)
+    print(json.dumps(dashboard, indent=2))
+
+
+async def main():
+    before = perf_counter()
+    # Connect to public Grafana instance of Grafana Labs fame.
+    grafana = AsyncGrafanaApi(host="play.grafana.org")
+
+    print("## All folders on play.grafana.org", file=sys.stderr)
+    folders = await grafana.folder.get_all_folders()
+    print(json.dumps(folders, indent=2))
+
+    tasks = []
+
+    for folder in folders:
+        if folder["id"] > 0:
+            tasks.append(fetch_dashboard(grafana, folder["uid"]))
+            if len(tasks) == 4:
+                break
+
+    await asyncio.gather(*tasks)
+    print(f"## Completed in {perf_counter() - before}s", file=sys.stderr)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

examples/datasource-health-check.py

@@ -9,7 +9,7 @@
 import sys
 from optparse import OptionParser
 
-import requests
+import niquests
 from verlib2 import Version
 
 from grafana_client import GrafanaApi
@@ -79,7 +79,7 @@ def run(grafana: GrafanaApi):
 
     try:
         grafana_client.connect()
-    except requests.exceptions.ConnectionError:
+    except niquests.exceptions.ConnectionError:
         logger.exception("Connecting to Grafana failed")
         raise SystemExit(1)
 

examples/datasource-health-probe.py

@@ -9,7 +9,7 @@
 import sys
 from optparse import OptionParser
 
-import requests
+import niquests
 from verlib2 import Version
 
 from grafana_client import GrafanaApi
@@ -129,7 +129,7 @@ def run(grafana: GrafanaApi, grafana_version: Version = None):
 
     try:
         grafana_client.connect()
-    except requests.exceptions.ConnectionError:
+    except niquests.exceptions.ConnectionError:
         logger.exception("Connecting to Grafana failed")
         raise SystemExit(1)
 

examples/datasource-smartquery.py

@@ -48,7 +48,7 @@
 import logging
 from optparse import OptionParser
 
-import requests
+import niquests
 
 from grafana_client import GrafanaApi
 from grafana_client.model import DatasourceIdentifier
@@ -97,7 +97,7 @@ def run(grafana: GrafanaApi):
 
     try:
         grafana_client.connect()
-    except requests.exceptions.ConnectionError:
+    except niquests.exceptions.ConnectionError:
         logger.exception("Connecting to Grafana failed")
         raise SystemExit(1)
 

examples/folders-dashboard.py

@@ -16,21 +16,26 @@
 
 import json
 import sys
+from time import perf_counter
 
 from grafana_client import GrafanaApi
 
 
 def main():
+    before = perf_counter()
     # Connect to public Grafana instance of Grafana Labs fame.
     grafana = GrafanaApi(host="play.grafana.org")
 
     print("## All folders on play.grafana.org", file=sys.stderr)
     folders = grafana.folder.get_all_folders()
     print(json.dumps(folders, indent=2))
 
-    print("## Dashboard with UID 000000012 at play.grafana.org", file=sys.stderr)
-    dashboard_000000012 = grafana.dashboard.get_dashboard("000000012")
-    print(json.dumps(dashboard_000000012, indent=2))
+    for folder in folders[:4]:
+        print(f"## Dashboard with UID {folder['uid']} at play.grafana.org", file=sys.stderr)
+        dashboard = grafana.dashboard.get_dashboard(folder["uid"])
+        print(json.dumps(dashboard, indent=2))
+
+    print(f"## Completed in {perf_counter() - before}s", file=sys.stderr)
 
 
 if __name__ == "__main__":