Replace get with post and use form encoding

Author: probably-not

lib/flame_ec2/ec2_api.ex

@@ -10,12 +10,11 @@ defmodule FlameEC2.EC2Api do
   require Logger
 
   def run_instances!(%BackendState{} = state) do
-    params = build_query_from_state(state)
+    params = build_params_from_state(state)
 
     uri =
       state.config.ec2_service_endpoint
       |> URI.new!()
-      |> URI.append_query(params)
       |> URI.to_string()
 
     credentials = :aws_credentials.get_credentials()
@@ -27,7 +26,8 @@ defmodule FlameEC2.EC2Api do
       %{} ->
         [
           url: uri,
-          method: :get,
+          method: :post,
+          form: params,
           headers: [{:accept, "application/json"}],
           aws_sigv4: Map.put_new(credentials, :service, "ec2")
         ]
@@ -40,14 +40,13 @@ defmodule FlameEC2.EC2Api do
     end
   end
 
-  def build_query_from_state(%BackendState{} = state) do
+  def build_params_from_state(%BackendState{} = state) do
     state.config
     |> params_from_config()
     |> Map.merge(instance_tags(state))
     |> Map.put("Action", "RunInstances")
     |> flatten_json_object()
     |> Map.filter(fn {_k, v} -> not is_nil(v) end)
-    |> URI.encode_query()
   end
 
   defp instance_tags(%BackendState{} = state) do

test/flame_ec2/ec2_api_test.exs

@@ -23,26 +23,25 @@ defmodule FlameEC2.EC2ApiTest do
     config = FlameEC2.QuickConfigs.simple_valid_config()
     state = FlameEC2.BackendState.new(config, [])
 
-    query = FlameEC2.EC2Api.build_query_from_state(state)
-    parsed = URI.decode_query(query)
+    parsed = FlameEC2.EC2Api.build_params_from_state(state)
 
     assert parsed["Action"] == "RunInstances"
     assert parsed["ImageId"] == "ami-123"
     assert parsed["InstanceType"] == "t3.nano"
-    assert parsed["MaxCount"] == "1"
-    assert parsed["MinCount"] == "1"
+    assert parsed["MaxCount"] == 1
+    assert parsed["MinCount"] == 1
 
-    assert parsed["NetworkInterface.1.AssociatePublicIpAddress"] == "false"
-    assert parsed["NetworkInterface.1.DeleteOnTermination"] == "true"
-    assert parsed["NetworkInterface.1.DeviceIndex"] == "0"
+    assert parsed["NetworkInterface.1.AssociatePublicIpAddress"] == false
+    assert parsed["NetworkInterface.1.DeleteOnTermination"] == true
+    assert parsed["NetworkInterface.1.DeviceIndex"] == 0
     assert parsed["NetworkInterface.1.SubnetId"] == "subnet-123"
     assert parsed["NetworkInterface.1.SecurityGroupId.1"] == "sg-123"
 
     assert parsed["TagSpecification.1.ResourceType"] == "instance"
     assert parsed["TagSpecification.1.Tag.1.Key"] == "FLAME_PARENT_IP"
     assert parsed["TagSpecification.1.Tag.1.Value"] == context[:local_ipv4]
     assert parsed["TagSpecification.1.Tag.2.Key"] == "FLAME_PARENT_APP"
-    assert parsed["TagSpecification.1.Tag.2.Value"] == "flame_ec2"
+    assert parsed["TagSpecification.1.Tag.2.Value"] == :flame_ec2
 
     assert parsed["UserData"]
     {:ok, decoded} = Base.decode64(parsed["UserData"])
@@ -72,8 +71,7 @@ defmodule FlameEC2.EC2ApiTest do
 
     state = FlameEC2.BackendState.new(config, [])
 
-    query = FlameEC2.EC2Api.build_query_from_state(state)
-    parsed = URI.decode_query(query)
+    parsed = FlameEC2.EC2Api.build_params_from_state(state)
 
     assert parsed["LaunchTemplate.LaunchTemplateId"] == "lt-123"
     assert parsed["LaunchTemplate.Version"] == "1"