Add infracost configuration

.gitignore

@@ -15,5 +15,8 @@ override.tfvars
 *.tfstate.*
 *.terraform.lock.hcl
 
+# infracost files
+.infracost
+
 # Crash log files
 crash.log

README.md

@@ -32,6 +32,27 @@ These examples cover deploying an Iglu Server, for hosting your schemas, and a S
 | ![i1][install-image]                   |  ![i3][faq-image]        |
 | **[Installation Guide][installguide]** |  **[FAQ][faq]**          |
 
+### Estimating costs
+
+To estimate costs, use [infracost](https://www.infracost.io/docs/).
+
+For example:
+
+```bash
+cd terraform/aws
+infracost breakdown --config-file infracost.yml
+```
+
+To estimate costs accounting for usage-based pricing:
+
+```bash
+cd terraform/aws
+infracost breakdown --config-file infracost.yml --sync-usage-file
+# edit iglu_server/default/infracost-usage.yml
+# edit pipeline/default/infracost-usage.yml
+infracost breakdown --config-file infracost.yml
+```
+
 ### Updating READMEs
 
 To generate the READMEs, use [terraform-docs][tf-docs].

terraform/aws/infracost.yml

@@ -0,0 +1,6 @@
+version: 0.1
+projects:
+  - path: iglu_server/default
+    usage_file: iglu_server/default/infracost-usage.yml
+  - path: pipeline/default
+    usage_file: pipeline/default/infracost-usage.yml

terraform/azure/infracost.yml

@@ -0,0 +1,8 @@
+version: 0.1
+projects:
+  - path: base
+    usage_file: base/infracost-usage.yml
+  - path: iglu_server
+    usage_file: iglu_server/infracost-usage.yml
+  - path: pipeline
+    usage_file: pipeline/infracost-usage.yml