automate asset builds with goreleaser and travis ciii

Signed-off-by: Sean Porter <portertech@gmail.com>

.gitignore

@@ -15,3 +15,6 @@ sensu-prometheus-collector
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+
+# dep
+vendor/

.goreleaser.yml

@@ -0,0 +1,49 @@
+builds:
+  # List of builds
+  - # First Build
+    env:
+    - CGO_ENABLED=0
+    main: main.go
+    # Set the binary output location to bin/ so archive will comply with Sensu Go Asset structure
+    binary: bin/{{ .ProjectName }}
+    goos:
+      - darwin
+      - freebsd
+      - linux
+      - netbsd
+      - solaris
+      - windows
+    goarch:
+      - amd64
+      - 386
+      - arm
+      - arm64
+    goarm:
+      - 5
+      - 6
+      - 7
+    ignore:
+      # TODO: add freebsd/arm support to gopsutil
+      - goos: freebsd
+        goarch: arm
+
+checksum:
+  # You can change the name of the checksums file.
+  # Default is `{{ .ProjectName }}_{{ .Version }}_checksums.txt`.
+  name_template: "{{ .ProjectName }}_{{ .Version }}_sha256-checksums.txt"
+
+archive:
+  format: tar.gz
+  files:
+    - LICENSE
+    - README.md
+    - CHANGELOG.md
+
+  # You can change the name of the GitHub release.
+  # This is parsed with the Go template engine and the following variables
+  # are available:
+  # - ProjectName
+  # - Tag
+  # - Version (Git tag without `v` prefix)
+  # Default is ``
+  #name_template: "{{.ProjectName}}-v{{.Version}}"

.travis.yml

@@ -0,0 +1,36 @@
+language: go
+go:
+- 1.10.x
+install:
+- go get gopkg.in/alecthomas/gometalinter.v1
+- go get github.com/gordonklaus/ineffassign
+- go get github.com/jgautheron/goconst/cmd/goconst
+- go get github.com/kisielk/errcheck
+- go get github.com/golang/dep/cmd/dep
+- dep ensure
+script:
+- gometalinter.v1 --vendor --disable-all --enable=vet --enable=ineffassign
+  --enable=goconst --tests ./...
+
+before_script:
+- echo "REPO $TRAVIS_REPO_SLUG TAG ${TRAVIS_TAG}"
+
+before_deploy:
+- go get github.com/goreleaser/goreleaser
+
+deploy:
+  - #goreleaser
+    provider: script
+    script: goreleaser
+    skip_cleanup: true
+    on:
+      tags: true
+
+after_deploy:
+  - git clone https://github.com/sensu/sensu-go-bonsai-asset.git bonsai
+  - bonsai/generate-sha512sum.sh
+  - bonsai/github-release-upload.sh github_api_token=$GITHUB_TOKEN repo_slug="$TRAVIS_REPO_SLUG" tag="${TRAVIS_TAG}" filename="dist/$(cat dist/sha512_file)"
+
+env:
+  global:
+  - secure: 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

Gopkg.toml

@@ -0,0 +1,46 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/kelseyhightower/envconfig"
+  version = "1.3.0"
+
+[[constraint]]
+  name = "github.com/prometheus/client_golang"
+  version = "0.8.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/prometheus/common"
+
+[[constraint]]
+  name = "github.com/stretchr/testify"
+  version = "1.2.2"
+
+[prune]
+  go-tests = true
+  unused-packages = true