1 files changed, 43 insertions, 0 deletions
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();
+    }
+}