Merge pull request #513 from Microsoft/app-templates

Added app templates

Author: uc-msft

samples/features/sql-big-data-cluster/app-templates/README.md

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+# App Templates
+These are the language kernel templates for deployment and consumption of applications deployed into an on premise SQL Server Big Data Cluster.
+
+Each directory listed is a separate language kernel that is supported for app deployment:
+- Python
+- R
+- SSIS
+- Mleap
+
+Each template contains three primary files:
+- spec.yaml
+    - This is the deployment definition given to the cluster
+- run-spec.yaml
+    - This is the app consumption definition given to the VS Code Ext. client
+- app code
+    - Example code for deployment of that particular type of language kernel
+
+These templates are automatically pulled by the mssqlctl CLI and the App Deploy VS Code Extension.  Customers may also download these templates themselves outside of the clients, if desired.
+
+Future language kernels supported for app deployment will be contributed as templates here.

samples/features/sql-big-data-cluster/app-templates/mleap/frame.airbnb.json

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+{
+  "schema": {
+    "fields": [{
+      "name": "state",
+      "type": "string"
+    }, {
+      "name": "bathrooms",
+      "type": "double"
+    }, {
+      "name": "square_feet",
+      "type": "double"
+    }, {
+      "name": "bedrooms",
+      "type": "double"
+    }, {
+      "name": "security_deposit",
+      "type": "double"
+    }, {
+      "name": "cleaning_fee",
+      "type": "double"
+    }, {
+      "name": "extra_people",
+      "type": "double"
+    }, {
+      "name": "number_of_reviews",
+      "type": "double"
+    }, {
+      "name": "review_scores_rating",
+      "type": "double"
+    }, {
+      "name": "room_type",
+      "type": "string"
+    }, {
+      "name": "host_is_superhost",
+      "type": "string"
+    }, {
+      "name": "cancellation_policy",
+      "type": "string"
+    }, {
+      "name": "instant_bookable",
+      "type": "string"
+    }]
+  },
+  "rows": [["NY", 2.0, 1250.0, 3.0, 50.0, 30.0, 2.0, 56.0, 90.0, "Entire home/apt", "1.0", "strict", "1.0"]]
+}

samples/features/sql-big-data-cluster/app-templates/mleap/run-spec.yaml

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+name: hello-mleap
+version: v1
+inputs: ./frame.airbnb.json

samples/features/sql-big-data-cluster/app-templates/mleap/spec.yaml

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+name: hello-mleap
+version: v1
+runtime: Mleap
+bundleFileName: airbnb.model.lr.zip

samples/features/sql-big-data-cluster/app-templates/python/hello.py

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+def handler(msg):
+   """
+   Writes input argument back-out to the standard output returning input as 
+   output.
+   
+   Generated by: `SQL Server Big Data Cluster`
+   
+   :param msg: The message to echo.
+   :type msg: str
+   :return:  The input message `msg` as output `out`.
+   """
+   print(msg)
+   out = msg
+   return out
+
+
+if __name__ == '__main__':
+    handler('Hello')

samples/features/sql-big-data-cluster/app-templates/python/run-spec.yaml

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+name: hello-python
+version: v1
+inputs:
+   msg: hello

samples/features/sql-big-data-cluster/app-templates/python/spec.yaml

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+name: hello-python
+version: v1
+runtime: Python
+src: ./hello.py
+entrypoint: handler
+replicas: 1
+poolsize: 1
+inputs:
+   msg: str
+output:
+   out: str

samples/features/sql-big-data-cluster/app-templates/r/hello.R

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+#' Writes input argument back-out to the 
+#' standard output returning input as output.
+#' 
+#' Generated by: `SQL Server Big Data Cluster`
+#'
+#' @param msg A character message to echo.
+#' @return The input \code{msg} as output \code{out}.
+handler <- function(msg) {
+   print(msg)
+   out = msg   
+   out
+}

samples/features/sql-big-data-cluster/app-templates/r/run-spec.yaml

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+name: hello-r
+version: v1
+inputs:
+   msg: hello

samples/features/sql-big-data-cluster/app-templates/r/spec.yaml

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+name: hello-r
+version: v1
+runtime: R
+src: ./hello.R
+entrypoint: handler
+replicas: 1
+poolsize: 1
+inputs:
+   msg: character
+output:
+   out: character