Merge pull request #38 from zinal/time_series_serverless-up1

Time series serverless up1

Author: gridnevvvit

examples/time-series-serverless/.gitignore

@@ -0,0 +1 @@
+*.zip

examples/time-series-serverless/README.md

@@ -13,12 +13,26 @@ You should select next values for this example.
 | timestamp   | Timestamp | Primary |
 | value       | Double    |         |
 
-Remember YDB endpoint, database and table name
+Remember YDB endpoint, database and table name.
+
+Or use the following YQL query to create the table:
+```SQL
+CREATE TABLE `tsdemo/data1` (
+   `timestamp` Timestamp,
+   `value` Double,
+   PRIMARY KEY(`timestamp`)
+);
+```
 
 ## Create Service account
 To create service account you need to go to cloud console to **Service accounts** in left pane and create account with **editor** and **viewer** roles.
 Remember account id, it will be used later to allow access to serverless database.
 
+To grab the list of service accounts in the command line, the following can be used:
+```shell
+yc iam service-account list
+```
+
 # Create cloud function
 Create cloud function from source code. You should archive source code directory to zip file and upload it into **Cloud functions** section. 
 Please do not forget to add requirements.txt to this archive.
@@ -35,7 +49,10 @@ yc serverless function create --name=time-series
 
 Next you should upload code and create new version of function via following command:
 ```shell
-yc sls fn version create --service-account-id=<service-account-id> --function-name=time-series --runtime python37 --entrypoint time_series.handler --memory 128m --execution-timeout 60s --source-path <path-to-archived-sources> --environment YDB_ENDPOINT=<db-endpoint>,YDB_DATABASE=<db-database>,YDB_TABLE=<db-table>,USE_METADATA_CREDENTIALS=1
+yc sls fn version create --service-account-id=<service-account-id> \
+  --function-name=time-series --runtime python39 --entrypoint time_series.handler \
+  --memory 128m --execution-timeout 60s --source-path <path-to-archived-sources> \
+  --environment YDB_ENDPOINT=<db-endpoint>,YDB_DATABASE=<db-database>,YDB_TABLE=<db-table>,USE_METADATA_CREDENTIALS=1
 ```
 
 The environment variables passed to function 

examples/time-series-serverless/build.sh

@@ -0,0 +1,3 @@
+#! /bin/sh
+
+zip -9 time-series-serverless.zip *.txt *.py

examples/time-series-serverless/config.py

@@ -5,7 +5,7 @@ class Config(object):
     def __init__(self):
         self._endpoint = os.getenv("YDB_ENDPOINT")
         self._database = os.getenv("YDB_DATABASE")
-        self._path = os.getenv("YDB_PATH")
+        self._path = os.getenv("YDB_TABLE")
 
     @property
     def endpoint(self):

examples/time-series-serverless/requirements.txt

@@ -1,3 +1,4 @@
 iso8601==0.1.14
 yandexcloud==0.80.0
 ydb==0.0.50.843132462
+protobuf==3.20.1

examples/time-series-serverless/sample-commands.txt

@@ -0,0 +1,10 @@
+yc serverless function create --name=time-series
+
+yc iam service-account list
+
+yc sls fn version create --service-account-id=ajes0cnn9dkefgjk2eer \
+  --function-name=time-series --runtime python39 --entrypoint time_series.handler \
+  --memory 128m --execution-timeout 60s --source-path time-series-serverless.zip \
+  --environment YDB_ENDPOINT=grpcs://ydb.serverless.yandexcloud.net:2135,YDB_DATABASE=/ru-central1/b1gfvslmokutuvt2g019/etnipbeb58o81r4rl5t8,YDB_TABLE=tsdemo/data1,USE_METADATA_CREDENTIALS=1
+
+curl "https://functions.yandexcloud.net/d4ek54ao5ouqq1tg5tbq?start=1615000000000&end=1615000010000&interval=1&mean=12.3&sigma=5"