Add datasource to retrieve pg password while using IAM (#4)

Author: bpaquet

postgresql/datasource_postgresql_password.go

@@ -0,0 +1,24 @@
+package postgresql
+
+import (
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func dataSourcePostgrePassword() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourcePostgrePasswordRead,
+		Schema: map[string]*schema.Schema{
+			"password": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func dataSourcePostgrePasswordRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*Client)
+	d.SetId("password")
+	d.Set("password", client.config.Password)
+	return nil
+}

postgresql/provider.go

@@ -175,6 +175,10 @@ func Provider() *schema.Provider {
 			"postgresql_function":                  resourcePostgreSQLFunction(),
 		},
 
+		DataSourcesMap: map[string]*schema.Resource{
+			"postgresql_password": dataSourcePostgrePassword(),
+		},
+
 		ConfigureFunc: providerConfigure,
 	}
 }

website/docs/d/postgresql_password.html.markdown

@@ -0,0 +1,23 @@
+---
+layout: "postgresql"
+page_title: "PostgreSQL: postgresql_password"
+sidebar_current: "docs-postgresql-datasource-postgresql_password"
+description: |-
+  Retrieve the postgres password generated by IAM Authentication
+---
+
+# postgresql\_password
+
+The ``postgresql_password`` data source can be used to retrieve the password
+generated by IAM Authentication for any other usage.
+
+## Usage
+
+```hcl
+data "postgresql_password" "my_password" {
+}
+```
+
+## Attributes Reference
+
+* `password` - The password generated by IAM Authentication (or the password provided by the user)

website/postgresql.erb

@@ -45,6 +45,15 @@
                     </li>
                 </ul>
         </li>
+
+        <li<%= sidebar_current("docs-postgresql-datasource") %>>
+        <a href="#">Data Sources</a>
+                <ul class="nav nav-visible">
+                    <li<%= sidebar_current("docs-postgresql-datasource-postgresql_password") %>>
+                        <a href="/docs/providers/postgresql/d/postgresql_password.html">postgresql_password</a>
+                    </li>
+                </ul>
+        </li>
       </ul>
     </div>
   <% end %>