Update for prometheus-community

Update the codebase for the new prometheus-comunity location.
* Replace Travis with CircleCI.
* Update to standard Prometheus Makefile.common
* Update all Go references.
* Drop vendor/ dir
* Update vendoring to use Go modules.

Signed-off-by: SuperQ <[email protected]>

Author: SuperQ

.circleci/config.yml

@@ -0,0 +1,58 @@
+---
+version: 2.1
+
+orbs:
+  prometheus: prometheus/[email protected]
+
+executors:
+  # This must match .promu.yml.
+  golang:
+    docker:
+    - image: circleci/golang:1.16
+
+jobs:
+  test:
+    executor: golang
+
+    steps:
+    - prometheus/setup_environment
+    # TODO: Fix golangci-lint and test issues to use plain `make` test.
+    - run: make precheck style check_license unused build
+    - prometheus/store_artifact:
+        file: elasticsearch_exporter
+
+workflows:
+  version: 2
+  elasticsearch_exporter:
+    jobs:
+    - test:
+        filters:
+          tags:
+            only: /.*/
+    - prometheus/build:
+        name: build
+        filters:
+          tags:
+            only: /.*/
+    - prometheus/publish_master:
+        context: org-context
+        docker_hub_organization: prometheuscommunity
+        quay_io_organization: prometheuscommunity
+        requires:
+        - test
+        - build
+        filters:
+          branches:
+            only: master
+    - prometheus/publish_release:
+        context: org-context
+        docker_hub_organization: prometheuscommunity
+        quay_io_organization: prometheuscommunity
+        requires:
+        - test
+        - build
+        filters:
+          tags:
+            only: /^v.*/
+          branches:
+            ignore: /.*/

.gitignore

@@ -3,3 +3,4 @@ elasticsearch_exporter
 *.tar.gz
 *-stamp
 .tarballs
+/vendor

.promu.yml

@@ -1,16 +1,19 @@
 go:
-    cgo: false
+    # This must match .circle/config.yml.
+    version: 1.16
 repository:
-    path: github.com/justwatchcom/elasticsearch_exporter
+    path: github.com/prometheus-community/elasticsearch_exporter
 build:
+    binaries:
+        - name: elasticsearch_exporter
     flags: -a -tags netgo
     ldflags: |
         -s
-        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Version={{.Version}}
-        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Revision={{.Revision}}
-        -X {{repoPath}}/vendor/github.com/prometheus/common/version.Branch={{.Branch}}
-        -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
-        -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
+        -X github.com/prometheus/common/version.Version={{.Version}}
+        -X github.com/prometheus/common/version.Revision={{.Revision}}
+        -X github.com/prometheus/common/version.Branch={{.Branch}}
+        -X github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
+        -X github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
 tarball:
     files:
         - LICENSE
@@ -19,27 +22,3 @@ tarball:
         - examples/grafana/dashboard.json
         - examples/kubernetes/deployment.yml
         - examples/prometheus/elasticsearch.rules
-crossbuild:
-    platforms:
-        - linux/amd64
-        - linux/386
-        - darwin/amd64
-        - darwin/386
-        - windows/amd64
-        - windows/386
-        - freebsd/amd64
-        - freebsd/386
-        - openbsd/amd64
-        - openbsd/386
-        - netbsd/amd64
-        - netbsd/386
-        - dragonfly/amd64
-        - linux/arm
-        - linux/arm64
-        - freebsd/arm
-        - openbsd/arm
-        - netbsd/arm
-        - linux/ppc64
-        - linux/ppc64le
-        - linux/mips64
-        - linux/mips64le

.travis.yml

@@ -1,14 +1,12 @@
-FROM quay.io/prometheus/golang-builder as builder
+ARG ARCH="amd64"
+ARG OS="linux"
+FROM quay.io/prometheus/busybox-${OS}-${ARCH}:glibc
+LABEL maintainer="The Prometheus Authors <[email protected]>"
 
-ADD .   /go/src/github.com/justwatchcom/elasticsearch_exporter
-WORKDIR /go/src/github.com/justwatchcom/elasticsearch_exporter
+ARG ARCH="amd64"
+ARG OS="linux"
+COPY .build/${OS}-${ARCH}/elasticsearch_exporter /bin/elasticsearch_exporter
 
-RUN make
-
-FROM        quay.io/prometheus/busybox:latest
-MAINTAINER  The Prometheus Authors <[email protected]>
-
-COPY --from=builder /go/src/github.com/justwatchcom/elasticsearch_exporter/elasticsearch_exporter  /bin/elasticsearch_exporter
-
-EXPOSE      9114
+EXPOSE      7979
+USER        nobody
 ENTRYPOINT  [ "/bin/elasticsearch_exporter" ]

Dockerfile

@@ -1,80 +1,10 @@
-# Copyright 2016 The Prometheus Authors
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# Ensure that 'all' is the default target otherwise it will be the first target from Makefile.common.
+all::
 
-GO    := GO15VENDOREXPERIMENT=1 go
-PROMU := $(GOPATH)/bin/promu
-GOLINTER                ?= $(GOPATH)/bin/gometalinter
-pkgs   = $(shell $(GO) list ./... | grep -v /vendor/)
+# Needs to be defined before including Makefile.common to auto-generate targets
+DOCKER_ARCHS ?= amd64 armv7 arm64 ppc64le
+DOCKER_REPO  ?= prometheuscommunity
 
-PREFIX                  ?= $(shell pwd)
-BIN_DIR                 ?= $(shell pwd)
-DOCKER_IMAGE_NAME       ?= elasticsearch-exporter
-DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
-
-
-all: format build test
-
-style:
-	@echo ">> checking code style"
-	@! gofmt -d $(shell find . -path ./vendor -prune -o -name '*.go' -print) | grep '^'
-
-test:
-	@echo ">> running tests"
-	@$(GO) test -short $(pkgs)
-
-format:
-	@echo ">> formatting code"
-	@$(GO) fmt $(pkgs)
-
-vet:
-	@echo ">> vetting code"
-	@$(GO) vet $(pkgs)
-
-build: promu
-	@echo ">> building binaries"
-	@$(PROMU) build --prefix $(PREFIX)
+include Makefile.common
 
-crossbuild: promu
-	@echo ">> cross-building binaries"
-	@$(PROMU) crossbuild
-
-tarball: promu
-	@echo ">> building release tarball"
-	@$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
-
-tarballs: promu
-	@echo ">> building release tarballs"
-	@$(PROMU) crossbuild tarballs
-	@echo ">> calculating release checksums"
-	@$(PROMU) checksum $(BIN_DIR)/.tarballs
-
-docker:
-	@echo ">> building docker image"
-	@docker build -t "$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" .
-
-promu:
-	@GOOS=$(shell uname -s | tr A-Z a-z) \
-	        GOARCH=$(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m))) \
-	        $(GO) get -u github.com/prometheus/promu
-
-gometalinter: $(GOLINTER)
-	@echo ">> linting code"
-	@$(GOLINTER) --install > /dev/null
-	@$(GOLINTER) --config=./.gometalinter.json ./...
-
-$(GOPATH)/bin/gometalinter lint:
-	@GOOS=$(shell uname -s | tr A-Z a-z) \
-		GOARCH=$(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m))) \
-		$(GO) get -u github.com/alecthomas/gometalinter
-
-.PHONY: all style format build test vet tarball docker promu $(GOPATH)/bin/gometalinter lint
+DOCKER_IMAGE_NAME       ?= elasticsearch-exporter