Replace glide with Go modules (zalando#544)

* And attempt to build with modules and remove glide
* new tools.go file to get code-generator dependency + updated codegen + remove Glide files and update docs

Author: erthalion

.gitignore

@@ -24,7 +24,6 @@ _testmain.go
 *.test
 *.prof
 /vendor/
-/.glide/
 /build/
 /docker/build/
 .idea

.travis.yml

@@ -11,7 +11,6 @@ go:
   - "1.12.x"
 
 before_install:
-  - go get github.com/Masterminds/glide
   - go get github.com/mattn/goveralls
 
 install:

Makefile

@@ -78,8 +78,8 @@ scm-source.json: .git
 	echo '{\n "url": "git:$(GITURL)",\n "revision": "$(GITHEAD)",\n "author": "$(USER)",\n "status": "$(GITSTATUS)"\n}' > scm-source.json
 
 tools:
-	@go get -u honnef.co/go/tools/cmd/staticcheck
-	@go get -u github.com/Masterminds/glide
+	GO111MODULE=on go get -u honnef.co/go/tools/cmd/staticcheck
+	GO111MODULE=on go get k8s.io/[email protected]
 
 fmt:
 	@gofmt -l -w -s $(DIRS)
@@ -89,11 +89,11 @@ vet:
 	@staticcheck $(PKG)
 
 deps:
-	@glide install --strip-vendor
+	GO111MODULE=on go mod vendor
 
 test:
 	hack/verify-codegen.sh
-	@go test ./...
+	@go test ./pkg/...
 
 e2e: docker # build operator image to be tested
 	cd e2e; make tools test clean

delivery.yaml

@@ -2,9 +2,6 @@ version: "2017-09-20"
 pipeline:
     - id: build-postgres-operator
       type: script
-      env:
-        GOPATH: /root/go
-        OPERATOR_TOP_DIR: /root/go/src/github.com/zalando
       commands:
         - desc: 'Update'
           cmd: |
@@ -20,10 +17,6 @@ pipeline:
             mv go /usr/local
             ln -s /usr/local/go/bin/go /usr/bin/go
             go version
-        - desc: 'Symlink sources into the GOPATH'
-          cmd: |
-            mkdir -p $OPERATOR_TOP_DIR
-            ln -s $(pwd) $OPERATOR_TOP_DIR/postgres-operator
         - desc: 'Build docker image'
           cmd: |
             export PATH=$PATH:$HOME/go/bin
@@ -39,11 +32,9 @@ pipeline:
         - desc: 'Run unit tests'
           cmd: |
             export PATH=$PATH:$HOME/go/bin
-            cd $OPERATOR_TOP_DIR/postgres-operator
             go test ./pkg/...
         - desc: 'Run e2e tests'
           cmd: |
-            cd $OPERATOR_TOP_DIR/postgres-operator
             make e2e
         - desc: 'Push docker image'
           cmd: |

docs/developer.md

@@ -27,20 +27,17 @@ git clone https://github.com/zalando/postgres-operator.git
 
 ## Building the operator
 
-You need Glide to fetch all dependencies. Install it with:
+We use [Go Modules](https://github.com/golang/go/wiki/Modules) for handling
+dependencies. When using Go below v1.13 you need to explicitly enable Go modules
+by setting the `GO111MODULE` environment variable to `on`. The make targets do
+this for you, so simply run
 
 ```bash
-make tools
-```
-
-Next, install dependencies with glide by issuing:
-
-```bash
-make deps
+make tools deps
 ```
 
 This would take a while to complete. You have to redo `make deps` every time
-you dependencies list changes, i.e. after adding a new library dependency.
+your dependencies list changes, i.e. after adding a new library dependency.
 
 Build the operator with the `make docker` command. You may define the TAG
 variable to assign an explicit tag to your docker image and the IMAGE to set
@@ -214,14 +211,7 @@ dlv connect 127.0.0.1:DLV_PORT
 To run all unit tests, you can simply do:
 
 ```bash
-go test ./...
-```
-
-For go 1.9 `vendor` directory would be excluded automatically. For previous
-versions you can exclude it manually:
-
-```bash
-go test $(glide novendor)
+go test ./pkg/...
 ```
 
 In case if you need to debug your unit test, it's possible to use delve: