[BREAKING] dsl package refactor (goadesign#1913)

* Consolidate design packages

* Rename Metadata to Meta

* Merge DSLs

* Merge DSLs part 2

* Typo

* Add back examples

Fixup all errors.

* Add FinalizeFunc in codegen

* Fix all tests

* Nix aliaser

* Fix some more examples

* Change middleware logger interface to match gokit logger

* Fix example server templates to handle gokit plugin

* Fix type names in server/client types and openapi

* Fix documentation on dsl/api.go

* Fix openapi specs

* Fix test-plugins in travis

Author: Nitin

.golint_exclude

@@ -1,5 +1,6 @@
-http/design/response.go
 ^examples/.*
+dsl/http.go
+expr/http_response.go
 codegen/service/testing/.*
 http/codegen/testing/.*
 http/middleware/trace.go

.travis.yml

@@ -8,9 +8,8 @@ script:
 - cd ../../.. && mkdir goa.design && cp -r github.com/goadesign/goa goa.design/goa
 - cd goa.design/goa
 - make travis
-- make test-aliaser
 # https://graysonkoonce.com/getting-the-current-branch-name-during-a-pull-request-in-travis-ci/
-- export GOA_BRANCH=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi)
+- export GOA_BRANCH=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi) && echo $GOA_BRANCH
 - make test-plugins
 notifications:
   slack:

Makefile

@@ -5,15 +5,12 @@
 # Targets:
 # - "depend" retrieves the Go packages needed to run the linter and tests
 # - "lint" runs the linter and checks the code format using goimports
-# - "aliases" builds the DSL aliases files
 # - "test" runs the tests
 #
 # Meta targets:
 # - "all" is the default target, it runs all the targets in the order above.
 #
-DIRS=$(shell go list -f {{.Dir}} goa.design/goa/design/...)
-ALIASER_DESTS=\
-	http
+DIRS=$(shell go list -f {{.Dir}} goa.design/goa/expr/...)
 
 # Only list test and build dependencies
 # Standard dependencies are installed via go get
@@ -22,7 +19,7 @@ DEPEND=\
 	golang.org/x/lint/golint \
 	golang.org/x/tools/cmd/goimports
 
-all: lint aliases gen test
+all: lint gen test
 
 travis: depend all
 
@@ -40,13 +37,6 @@ lint:
 		echo "^ - Lint errors!" && echo && exit 1; \
 	fi
 
-aliases:
-	@cd cmd/aliaser && \
-	go build && \
-	for d in $(ALIASER_DESTS) ; do \
-		./aliaser -src goa.design/goa/dsl -dest goa.design/goa/$$d/dsl > /dev/null; \
-	done
-
 gen:
 	@cd cmd/goa && \
 	go install && \
@@ -69,22 +59,14 @@ gen:
 test:
 	go test ./...
 
-test-aliaser: aliases
-	@for d in $(ALIASER_DESTS) ; do \
-		if [ "`git diff $$d/*/aliases.go | tee /dev/stderr`" ]; then \
-			echo "^ - Aliaser tool output not identical!" && echo && exit 1; \
-		else \
-			echo "Aliaser tool output identical"; \
-		fi \
-	done
-
 test-plugins:
 	@if [ -z $(GOA_BRANCH) ]; then\
 		GOA_BRANCH=$$(git rev-parse --abbrev-ref HEAD); \
 	fi
-	@go get -d -v goa.design/plugins/... && \
-	cd $(GOPATH)/src/goa.design/plugins && \
-	git checkout $(GOA_BRANCH) || echo "Using master branch" && \
+	@if [ ! -d "$(GOPATH)/src/goa.design/plugins" ]; then\
+		git clone https://github.com/goadesign/plugins.git $(GOPATH)/src/goa.design/plugins; \
+	fi
+	@cd $(GOPATH)/src/goa.design/plugins && git checkout $(GOA_BRANCH) || echo "Using master branch in plugins repo" && \
 	make -k || (echo "Tests in plugin repo (https://github.com/goadesign/plugins) failed" \
                   "due to changes in goa repo (branch: $(GOA_BRANCH))!" \
                   "Create a branch with name '$(GOA_BRANCH)' in the plugin repo and fix these errors." && exit 1)

README.md

@@ -1,5 +1,6 @@
-# <img src="http://goa.design/img/goa-logo.svg">
+#
 
+![goa logo](https://goa.design/img/goa-logo.svg "goa")
 goa is a framework for building micro-services and APIs in Go using a unique
 design-first approach.
 
@@ -10,7 +11,7 @@ design-first approach.
 [![Godoc](https://godoc.org/goa.design/goa?status.svg)](https://godoc.org/goa.design/goa)
 [![Slack](https://img.shields.io/badge/slack-gophers-orange.svg?style=flat)](https://gophers.slack.com/messages/goa/)
 
-## Why goa?
+## Overview
 
 goa takes a different approach to building services by making it possible to
 describe the *design* of the service API using a simple Go DSL. goa uses the
@@ -89,8 +90,7 @@ content:
 ```go
 package design
 
-import . "goa.design/goa/http/design"
-import . "goa.design/goa/http/dsl"
+import . "goa.design/goa/dsl"
 
 // API describes the global properties of the API server.
 var _ = API("calc", func() {
@@ -266,7 +266,7 @@ The `http` directory contains the OpenAPI 2.0 specification in both YAML and
 JSON format.
 
 The specification can easily be served from the service itself using a file
-server. The [Files](http://godoc.org/goa.design/goa/http/dsl/http.go#Files) DSL
+server. The [Files](http://godoc.org/goa.design/goa/dsl/http.go#Files) DSL
 function makes it possible to server static file. Edit the file
 `design/design.go` and add: