SESNotificationService to accept multiple destinations.20170904

notificationEmail is now a comma separated list of addresses.
Adding unit tests for SESNotificationService.
Refactored AWS credential selection into ConfigCredentialProvider.

4 files changed, 86 insertions, 50 deletions

diff --git a/src/main/java/com/p4square/grow/backend/SESNotificationService.java b/src/main/java/com/p4square/grow/backend/SESNotificationService.java
index 58b732d..b42d09b 100644
--- a/src/main/java/com/p4square/grow/backend/SESNotificationService.java
+++ b/src/main/java/com/p4square/grow/backend/SESNotificationService.java
@@ -1,13 +1,12 @@
 package com.p4square.grow.backend;
 
-import com.amazonaws.auth.AWSCredentials;
-import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
 import com.amazonaws.regions.Region;
 import com.amazonaws.regions.Regions;
 import com.amazonaws.services.simpleemail.AmazonSimpleEmailService;
 import com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClient;
 import com.amazonaws.services.simpleemail.model.*;
 import com.p4square.grow.config.Config;
+import com.p4square.grow.config.ConfigCredentialProvider;
 import org.apache.log4j.Logger;
 
 /**
@@ -22,40 +21,22 @@ public class SESNotificationService implements NotificationService {
     private final Destination mDestination;
 
     public SESNotificationService(final Config config) {
-        AWSCredentials creds;
-
-        String awsAccessKey = config.getString("awsAccessKey");
-        if (awsAccessKey != null) {
-            creds = new AWSCredentials() {
-                @Override
-                public String getAWSAccessKeyId() {
-                    return config.getString("awsAccessKey");
-                }
-                @Override
-                public String getAWSSecretKey() {
-                    return config.getString("awsSecretKey");
-                }
-            };
-        } else {
-            creds = new DefaultAWSCredentialsProviderChain().getCredentials();
-        }
-
-        mClient = new AmazonSimpleEmailServiceClient(creds);
+        this(config, new AmazonSimpleEmailServiceClient(new ConfigCredentialProvider(config)));
 
+        // Set the AWS region.
         String region = config.getString("awsRegion");
         if (region != null) {
             mClient.setRegion(Region.getRegion(Regions.fromName(region)));
         }
+    }
+
+    public SESNotificationService(Config config, AmazonSimpleEmailService client) {
+        mClient = client;
 
         mSourceAddress = config.getString("notificationSourceEmail");
 
-        final String dest = config.getString("notificationEmail");
-        if (dest != null) {
-            mDestination = new Destination().withToAddresses(dest);
-        } else {
-            // Notifications are not configured.
-            mDestination = null;
-        }
+        final String[] dests = config.getString("notificationEmail", "").split(",");
+        mDestination = new Destination().withToAddresses(dests);
     }
 
     @Override
diff --git a/src/main/java/com/p4square/grow/backend/dynamo/DynamoDatabase.java b/src/main/java/com/p4square/grow/backend/dynamo/DynamoDatabase.java
index 68a165d..e04933f 100644
--- a/src/main/java/com/p4square/grow/backend/dynamo/DynamoDatabase.java
+++ b/src/main/java/com/p4square/grow/backend/dynamo/DynamoDatabase.java
@@ -4,14 +4,11 @@
 
 package com.p4square.grow.backend.dynamo;
 
-import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-import com.amazonaws.auth.AWSCredentials;
-import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
 import com.amazonaws.regions.Region;
 import com.amazonaws.regions.Regions;
 import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
@@ -40,6 +37,7 @@ import com.amazonaws.services.dynamodbv2.model.UpdateTableRequest;
 import com.amazonaws.services.dynamodbv2.model.UpdateTableResult;
 
 import com.p4square.grow.config.Config;
+import com.p4square.grow.config.ConfigCredentialProvider;
 
 /**
  * A wrapper around the Dynamo API.
@@ -49,25 +47,7 @@ public class DynamoDatabase {
     private final String mTablePrefix;
 
     public DynamoDatabase(final Config config) {
-        AWSCredentials creds;
-
-        String awsAccessKey = config.getString("awsAccessKey");
-        if (awsAccessKey != null) {
-            creds = new AWSCredentials() {
-                @Override
-                public String getAWSAccessKeyId() {
-                    return config.getString("awsAccessKey");
-                }
-                @Override
-                public String getAWSSecretKey() {
-                    return config.getString("awsSecretKey");
-                }
-            };
-        } else {
-            creds = new DefaultAWSCredentialsProviderChain().getCredentials();
-        }
-
-        mClient = new AmazonDynamoDBClient(creds);
+        mClient = new AmazonDynamoDBClient(new ConfigCredentialProvider(config));
 
         String endpoint = config.getString("dynamoEndpoint");
         if (endpoint != null) {
diff --git a/src/main/java/com/p4square/grow/config/Config.java b/src/main/java/com/p4square/grow/config/Config.java
index 2fc2ea3..f810980 100644
--- a/src/main/java/com/p4square/grow/config/Config.java
+++ b/src/main/java/com/p4square/grow/config/Config.java
@@ -200,4 +200,36 @@ public class Config {
 
         return defaultValue;
     }
+
+    /**
+     * Set a value in the config.
+     *
+     * @param key Config name
+     * @param value Config value
+     */
+    public void setString(String key, String value) {
+        mProperties.setProperty(mDomain + "." + key, value);
+    }
+
+    /**
+     * Set a value in the config.
+     *
+     * @param key Config name
+     * @param value Config value
+     */
+    public void setInt(String key, int value) {
+        setString(key, String.valueOf(value));
+    }
+
+    /**
+     * Set a value in the config.
+     *
+     * @param key Config name
+     * @param value Config value
+     */
+    public void setBoolean(String key, boolean value) {
+        setString(key, String.valueOf(value));
+    }
+
+
 }
diff --git a/src/main/java/com/p4square/grow/config/ConfigCredentialProvider.java b/src/main/java/com/p4square/grow/config/ConfigCredentialProvider.java
new file mode 100644
index 0000000..06abd48
--- /dev/null
+++ b/src/main/java/com/p4square/grow/config/ConfigCredentialProvider.java
@@ -0,0 +1,43 @@
+package com.p4square.grow.config;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
+
+/**
+ * AWSCredentials credentials backed by config.
+ *
+ * Falls back to DefaultAWSCredentialsProviderChain if the credentials are not in the config.
+ */
+public class ConfigCredentialProvider implements AWSCredentials {
+
+    private AWSCredentials mCredentials;
+
+    public ConfigCredentialProvider(final Config config) {
+        String awsAccessKey = config.getString("awsAccessKey");
+        if (awsAccessKey != null) {
+            mCredentials = new AWSCredentials() {
+                @Override
+                public String getAWSAccessKeyId() {
+                    return config.getString("awsAccessKey");
+                }
+
+                @Override
+                public String getAWSSecretKey() {
+                    return config.getString("awsSecretKey");
+                }
+            };
+        } else {
+            mCredentials = new DefaultAWSCredentialsProviderChain().getCredentials();
+        }
+    }
+
+    @Override
+    public String getAWSAccessKeyId() {
+        return mCredentials.getAWSAccessKeyId();
+    }
+
+    @Override
+    public String getAWSSecretKey() {
+        return mCredentials.getAWSSecretKey();
+    }
+}