Merge pull request #20 from fxi/dockerized

Docker image for cdsapi 

5 files changed, 83 insertions, 0 deletions

diff --git a/docker/.gitignore b/docker/.gitignore
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+output/*
+
diff --git a/docker/Dockerfile b/docker/Dockerfile
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+FROM python:3.7-alpine 
+
+RUN pip3 install cdsapi
+WORKDIR /input
+COPY request.json request.json
+WORKDIR /output
+WORKDIR /app
+COPY retrieve.py retrieve.py
+
+CMD ["python", "retrieve.py"]
diff --git a/docker/README.md b/docker/README.md
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+## Simple wrapper around cdsapi
+
+cdsapi homepage : https://github.com/ecmwf/cdsapi
+
+### How to use the dockerized version ?
+
+1. Write a request in json file – don't forget the file format and name. Eg.
+
+```js
+{
+  "url": "https://cds.climate.copernicus.eu/api/v2",
+  "uuid": "<user id>",
+  "key": "<user key>",
+  "variable": "reanalysis-era5-pressure-levels",
+  "options": {
+    "variable": "temperature",
+    "pressure_level": "1000",
+    "product_type": "reanalysis",
+    "date": "2017-12-01/2017-12-31",
+    "time": "12:00",
+    "format": "grib"
+  },
+  "filename":"test.grib"
+}
+```
+
+2. Run the command
+
+```sh 
+docker run -it --rm \
+  -v $(pwd)/request.json:/input/request.json \
+  -v $(pwd)/.:/output \
+  <YOUR REPO>/cdsretrieve 
+```
+
+Note : the file will be downloaded in the current folder, if not specified otherwise in the docker command. Inside the container, `/input` folder include the request and `/output` is target folder for the downloaded file.
+
+
diff --git a/docker/request.json b/docker/request.json
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+{
+  "url": "https://cds.climate.copernicus.eu/api/v2",
+  "uuid": "< YOUR USER ID >",
+  "key": "< YOUR API KEY >",
+  "variable": "reanalysis-era5-pressure-levels",
+  "options": {
+    "variable": "temperature",
+    "pressure_level": "1000",
+    "product_type": "reanalysis",
+    "date": "2017-12-01/2017-12-31",
+    "time": "12:00",
+    "format": "grib"
+  },
+  "filename":"test.grib"
+}
diff --git a/docker/retrieve.py b/docker/retrieve.py
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+++ b/docker/retrieve.py
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+import json, sys, cdsapi
+
+with open('/input/request.json') as req:
+    request = json.load(req)
+
+cds = cdsapi.Client(
+        request.get('url'), 
+        request.get('uuid') + ':' + request.get('key')
+        )
+
+cds.retrieve(
+        request.get('variable'), 
+        request.get('options'), 
+        '/output/' +request.get('filename')
+        )
+
+
+