Add script and instructions to setup AWS env

README.md

@@ -139,6 +139,8 @@ for the details.
 
 * Process science data and stage it for Cumulus:
 
+        # Source the AWS profile (once) before running 'process'-- use 'default' or a named profile
+        $ source scripts/env.sh default
         $ instameta process --config example/modscg.ini
 
 * Exit the Poetry shell:

scripts/env.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if (( $# != 1 )); then
+    echo "Usage: source env.sh aws_profile_name"
+    echo "       where aws_profile_name is an AWS CLI named profile"
+    echo "       https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html"
+    exit 1
+else
+    export AWS_PROFILE=$1
+
+    AWS_ACCESS_KEY_ID=$(aws configure get aws_access_key_id --profile "$AWS_PROFILE")
+    AWS_SECRET_ACCESS_KEY=$(aws configure get aws_secret_access_key --profile "$AWS_PROFILE")
+    AWS_REGION=$(aws configure get region --profile "$AWS_PROFILE" || echo "$AWS_DEFAULT_REGION")
+    AWS_ACCOUNT_ID=$(aws sts get-caller-identity --query "Account" --output text)
+
+    export AWS_ACCESS_KEY_ID
+    export AWS_SECRET_ACCESS_KEY
+    export AWS_REGION
+    export AWS_ACCOUNT_ID
+
+    echo "AWS environment:"
+    echo "  AWS_PROFILE:          $AWS_PROFILE"
+    echo "  AWS_REGION:           $AWS_REGION"
+    echo "  AWS_ACCOUNT_ID:       $AWS_ACCOUNT_ID"
+fi