soft-require typhoeus (#1486)

resolves #453

ruby/Gemfile.lock

@@ -2,15 +2,11 @@ PATH
   remote: .
   specs:
     svix (1.38.0)
-      typhoeus (~> 1.0, >= 1.0.1)
 
 GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.4.4)
-    ethon (0.14.0)
-      ffi (>= 1.38.0)
-    ffi (1.15.1)
     rake (13.0.6)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
@@ -25,8 +21,6 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.2)
-    typhoeus (1.4.0)
-      ethon (>= 0.9.0)
 
 PLATFORMS
   ruby

ruby/README.md

@@ -50,6 +50,13 @@ Add this line to your application's Gemfile:
 gem 'svix'
 ```
 
+If you are using svix to send outgoing webhhooks, you should also install the `typhoeus` gem.
+If you are only using svix to consume incoming webhooks, you do not need it.
+
+```ruby
+gem 'typhoeus`
+```
+
 And then execute:
 
 ```sh
@@ -69,7 +76,7 @@ First checkout the [core README](../README.md#development) for details on how to
 ## Building
 
 ```sh
-bundler exec rake build
+bundle exec rake build
 ```
 
 ## Contributing

ruby/svix.gemspec

@@ -15,6 +15,17 @@ Gem::Specification.new do |spec|
                        "Learn more at https://www.svix.com"
   spec.homepage      = "https://www.svix.com"
 
+  spec.post_install_message = <<~MESSAGE
+
+    Thank you for install svix!
+
+    If you are using svix to send outgoing webhhooks, you should also install the `typhoeus` gem.
+    If you are only using svix to consume incoming webhooks, you do not need it.
+
+      gem 'typhoeus`
+
+  MESSAGE
+
   # Prevent pushing this gem to RubyGems.org. To allow pushes either set the 'allowed_push_host'
   # to allow pushing to a single host or delete this section to allow pushing to any host.
   if spec.respond_to?(:metadata)
@@ -45,8 +56,6 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency 'typhoeus', '~> 1.0', '>= 1.0.1'
-
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", "~> 3.2"
 end

ruby/templates/api_client_typhoeus_partial.mustache

@@ -59,6 +59,18 @@
     # @option opts [Object] :body HTTP body (JSON/XML)
     # @return [Typhoeus::Request] A Typhoeus Request
     def build_request(http_method, path, opts = {})
+
+      begin
+        require 'typhoeus'
+      rescue LoadError
+        raise <<~MESSAGE
+          To use svix for sending outgoing webhooks, you need to install the typheous gem.
+          Please add it to your Gemfile and then run `bundle install`:
+
+            gem 'typhoeus'
+        MESSAGE
+      end
+
       url = build_request_url(path, opts)
       http_method = http_method.to_sym.downcase