Added dynamodb

nosql/cassandra/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>nosql</groupId>
+    <artifactId>gettingstarted</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+  </parent>
+  <groupId>com</groupId>
+  <artifactId>cassandra</artifactId>
+  <version>0.0.1-CASSANDRA-SNAPSHOT</version>
+</project>

nosql/dynamo/dynamocli.sh

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+aws dynamodb create-table \
+    --table-name stock_eod \
+    --attribute-definitions \
+        AttributeName=stockTicker,AttributeType=S AttributeName=tradeDate,AttributeType=S \
+    --key-schema AttributeName=stockTicker,KeyType=HASH AttributeName=tradeDate,KeyType=RANGE \
+    --provisioned-throughput ReadCapacityUnits=1,WriteCapacityUnits=1 \
+    --region us-east-1
+
+aws dynamodb put-item \
+    --table-name stock_eod \
+    --item '{ 
+        "stockTicker": {"S": "A"}, 
+        "tradeDate": {"S": "01-Jan-2009"}, 
+        "lowPrice": {"N": "35"}, 
+        "openPrice": {"N": "35"}, 
+        "highPrice": {"N": "35"}, 
+        "closePrice": {"N": "35"}, 
+        "volume": {"N": "0"} }' \
+    --return-consumed-capacity TOTAL \
+    --region us-east-1
+
+aws dynamodb put-item \
+    --table-name stock_eod \
+    --item '{ 
+        "stockTicker": {"S": "A"}, 
+        "tradeDate": {"S": "02-Jan-2009"}, 
+        "lowPrice": {"N": "35"}, 
+        "openPrice": {"N": "35"}, 
+        "highPrice": {"N": "35"}, 
+        "closePrice": {"N": "35"}, 
+        "volume": {"N": "0"} }' \
+    --return-consumed-capacity TOTAL \
+    --region us-east-1
+
+aws dynamodb query --table-name stock_eod --key-conditions file:///Users/usdgadiraj/code/dynamoquery.json --region us-east-1
+
+aws dynamodb query --table-name stock_eod --region us-east-1 --key-conditions '{
+    "stockTicker": {
+        "AttributeValueList": [
+            {   
+                "S": "A"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    },  
+    "tradeDate": {
+        "AttributeValueList": [
+            {   
+                "S": "01-Jan-2009"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    }
+}'
+
+aws dynamodb scan --table-name stock_eod --region us-east-1 
+
+aws dynamodb scan     --table-name stock_eod     --region us-east-1     --limit 10 --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb scan     --table-name stock_eod     --region us-east-1     --select volume --limit 10 --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb scan     --table-name stock_eod     --region us-east-1     --select COUNT --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb scan \
+     --table-name stock_eod \
+     --region us-east-1 \
+     --select SPECIFIC_ATTRIBUTES \
+     --attributes-to-get "v" \
+     --limit 10 \
+     --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb scan \
+     --table-name stock_eod \
+     --region us-east-1 \
+     --select SPECIFIC_ATTRIBUTES \
+     --projection-expression "tradeDate,stockTicker,v" \
+     --limit 10 \
+     --endpoint-url http://dynamo.itversity.com:8000
+

nosql/dynamo/dynamolocalcli.sh

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+aws dynamodb create-table \
+    --table-name stock_eod \
+    --attribute-definitions \
+        AttributeName=stockTicker,AttributeType=S AttributeName=tradeDate,AttributeType=S \
+    --key-schema AttributeName=stockTicker,KeyType=HASH AttributeName=tradeDate,KeyType=RANGE \
+    --provisioned-throughput ReadCapacityUnits=1,WriteCapacityUnits=1 \
+    --region us-east-1 \
+    --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb put-item \
+    --table-name stock_eod \
+    --item '{ 
+        "stockTicker": {"S": "A"}, 
+        "tradeDate": {"S": "01-Jan-2009"}, 
+        "lowPrice": {"N": "35"}, 
+        "openPrice": {"N": "35"}, 
+        "highPrice": {"N": "35"}, 
+        "closePrice": {"N": "35"}, 
+        "volume": {"N": "0"} }' \
+    --return-consumed-capacity TOTAL \
+    --region us-east-1 \
+    --endpoint-url http://dynamo.itversity.com:8000
+
+
+aws dynamodb put-item \
+    --table-name stock_eod \
+    --item '{ 
+        "stockTicker": {"S": "A"}, 
+        "tradeDate": {"S": "02-Jan-2009"}, 
+        "lowPrice": {"N": "35"}, 
+        "openPrice": {"N": "35"}, 
+        "highPrice": {"N": "35"}, 
+        "closePrice": {"N": "35"}, 
+        "volume": {"N": "0"} }' \
+    --return-consumed-capacity TOTAL \
+    --region us-east-1 \
+    --endpoint-url http://dynamo.itversity.com:8000
+
+
+aws dynamodb query \
+    --table-name stock_eod \
+    --key-conditions file:///Users/usdgadiraj/code/dynamoquery.json \
+    --region us-east-1 \
+    --endpoint-url http://dynamo.itversity.com:8000
+
+aws dynamodb query --table-name stock_eod --region us-east-1 --key-conditions '{
+    "stockTicker": {
+        "AttributeValueList": [
+            {   
+                "S": "A"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    },  
+    "tradeDate": {
+        "AttributeValueList": [
+            {   
+                "S": "01-Jan-2009"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    }
+}'
+
+aws dynamodb scan \
+    --table-name stock_eod \ 
+    --region us-east-1 \
+    --endpoint-url http://dynamo.itversity.com:8000
+

nosql/dynamo/dynamoquery.json

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+{
+    "stockTicker": {
+        "AttributeValueList": [
+            {   
+                "S": "A"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    },  
+    "tradeDate": {
+        "AttributeValueList": [
+            {   
+                "S": "01-Jan-2009"
+            }   
+        ],  
+        "ComparisonOperator": "EQ"
+    }
+}

nosql/dynamo/src/AmazonDynamoDBSample.java

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+/*
+ * Copyright 2012-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+import java.util.HashMap;
+import java.util.Map;
+
+import com.amazonaws.AmazonClientException;
+import com.amazonaws.AmazonServiceException;
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.profile.ProfileCredentialsProvider;
+import com.amazonaws.regions.Region;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
+import com.amazonaws.services.dynamodbv2.model.AttributeDefinition;
+import com.amazonaws.services.dynamodbv2.model.AttributeValue;
+import com.amazonaws.services.dynamodbv2.model.ComparisonOperator;
+import com.amazonaws.services.dynamodbv2.model.Condition;
+import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
+import com.amazonaws.services.dynamodbv2.model.DescribeTableRequest;
+import com.amazonaws.services.dynamodbv2.model.KeySchemaElement;
+import com.amazonaws.services.dynamodbv2.model.KeyType;
+import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
+import com.amazonaws.services.dynamodbv2.model.PutItemRequest;
+import com.amazonaws.services.dynamodbv2.model.PutItemResult;
+import com.amazonaws.services.dynamodbv2.model.ScalarAttributeType;
+import com.amazonaws.services.dynamodbv2.model.ScanRequest;
+import com.amazonaws.services.dynamodbv2.model.ScanResult;
+import com.amazonaws.services.dynamodbv2.model.TableDescription;
+import com.amazonaws.services.dynamodbv2.util.Tables;
+
+/**
+ * This sample demonstrates how to perform a few simple operations with the
+ * Amazon DynamoDB service.
+ */
+public class AmazonDynamoDBSample {
+
+    /*
+     * Before running the code:
+     *      Fill in your AWS access credentials in the provided credentials
+     *      file template, and be sure to move the file to the default location
+     *      (/Users/usdgadiraj/.aws/credentials) where the sample code will load the
+     *      credentials from.
+     *      https://console.aws.amazon.com/iam/home?#security_credential
+     *
+     * WARNING:
+     *      To avoid accidental leakage of your credentials, DO NOT keep
+     *      the credentials file in your source directory.
+     */
+
+    static AmazonDynamoDBClient dynamoDB;
+
+    /**
+     * The only information needed to create a client are security credentials
+     * consisting of the AWS Access Key ID and Secret Access Key. All other
+     * configuration, such as the service endpoints, are performed
+     * automatically. Client parameters, such as proxies, can be specified in an
+     * optional ClientConfiguration object when constructing a client.
+     *
+     * @see com.amazonaws.auth.BasicAWSCredentials
+     * @see com.amazonaws.auth.ProfilesConfigFile
+     * @see com.amazonaws.ClientConfiguration
+     */
+    private static void init() throws Exception {
+        /*
+         * The ProfileCredentialsProvider will return your [default]
+         * credential profile by reading from the credentials file located at
+         * (/Users/usdgadiraj/.aws/credentials).
+         */
+        AWSCredentials credentials = null;
+        try {
+            credentials = new ProfileCredentialsProvider("default").getCredentials();
+        } catch (Exception e) {
+            throw new AmazonClientException(
+                    "Cannot load the credentials from the credential profiles file. " +
+                    "Please make sure that your credentials file is at the correct " +
+                    "location (/Users/usdgadiraj/.aws/credentials), and is in valid format.",
+                    e);
+        }
+        dynamoDB = new AmazonDynamoDBClient(credentials);
+        Region usWest2 = Region.getRegion(Regions.US_WEST_2);
+        dynamoDB.setRegion(usWest2);
+    }
+
+    public static void main(String[] args) throws Exception {
+        init();
+
+        try {
+            String tableName = "my-favorite-movies-table";
+
+            // Create table if it does not exist yet
+            if (Tables.doesTableExist(dynamoDB, tableName)) {
+                System.out.println("Table " + tableName + " is already ACTIVE");
+            } else {
+                // Create a table with a primary hash key named 'name', which holds a string
+                CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(tableName)
+                    .withKeySchema(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH))
+                    .withAttributeDefinitions(new AttributeDefinition().withAttributeName("name").withAttributeType(ScalarAttributeType.S))
+                    .withProvisionedThroughput(new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L));
+                    TableDescription createdTableDescription = dynamoDB.createTable(createTableRequest).getTableDescription();
+                System.out.println("Created Table: " + createdTableDescription);
+
+                // Wait for it to become active
+                System.out.println("Waiting for " + tableName + " to become ACTIVE...");
+                Tables.awaitTableToBecomeActive(dynamoDB, tableName);
+            }
+
+            // Describe our new table
+            DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
+            TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
+            System.out.println("Table Description: " + tableDescription);
+
+            // Add an item
+            Map<String, AttributeValue> item = newItem("Bill & Ted's Excellent Adventure", 1989, "****", "James", "Sara");
+            PutItemRequest putItemRequest = new PutItemRequest(tableName, item);
+            PutItemResult putItemResult = dynamoDB.putItem(putItemRequest);
+            System.out.println("Result: " + putItemResult);
+
+            // Add another item
+            item = newItem("Airplane", 1980, "*****", "James", "Billy Bob");
+            putItemRequest = new PutItemRequest(tableName, item);
+            putItemResult = dynamoDB.putItem(putItemRequest);
+            System.out.println("Result: " + putItemResult);
+
+            // Scan items for movies with a year attribute greater than 1985
+            HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
+            Condition condition = new Condition()
+                .withComparisonOperator(ComparisonOperator.GT.toString())
+                .withAttributeValueList(new AttributeValue().withN("1985"));
+            scanFilter.put("year", condition);
+            ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
+            ScanResult scanResult = dynamoDB.scan(scanRequest);
+            System.out.println("Result: " + scanResult);
+
+        } catch (AmazonServiceException ase) {
+            System.out.println("Caught an AmazonServiceException, which means your request made it "
+                    + "to AWS, but was rejected with an error response for some reason.");
+            System.out.println("Error Message:    " + ase.getMessage());
+            System.out.println("HTTP Status Code: " + ase.getStatusCode());
+            System.out.println("AWS Error Code:   " + ase.getErrorCode());
+            System.out.println("Error Type:       " + ase.getErrorType());
+            System.out.println("Request ID:       " + ase.getRequestId());
+        } catch (AmazonClientException ace) {
+            System.out.println("Caught an AmazonClientException, which means the client encountered "
+                    + "a serious internal problem while trying to communicate with AWS, "
+                    + "such as not being able to access the network.");
+            System.out.println("Error Message: " + ace.getMessage());
+        }
+    }
+
+    private static Map<String, AttributeValue> newItem(String name, int year, String rating, String... fans) {
+        Map<String, AttributeValue> item = new HashMap<String, AttributeValue>();
+        item.put("name", new AttributeValue(name));
+        item.put("year", new AttributeValue().withN(Integer.toString(year)));
+        item.put("rating", new AttributeValue(rating));
+        item.put("fans", new AttributeValue().withSS(fans));
+
+        return item;
+    }
+
+}