build: add pika_exporter to pika

.github/workflows/pika_exporter.yml

@@ -0,0 +1,28 @@
+name: Pika_exporter
+
+on:
+  push:
+    branches: [ "unstable" ]
+  pull_request:
+    branches: [ "unstable" ]
+    paths:
+      - 'pika-tools/pika_exporter/**'
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+
+    - name: Build
+      run: |
+        cd pika-tools/pika_exporter && make -j
+    - name: Test
+      run: |
+        cd pika-tools/pika_exporter && make -j

pika-tools/pika_exporter/.gitignore

@@ -0,0 +1,14 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+bin/

pika-tools/pika_exporter/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 frank-ding
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

pika-tools/pika_exporter/Makefile

@@ -0,0 +1,112 @@
+# ifeq "$(GOPATH)" ""
+#   $(error Please set the environment variable GOPATH before running `make`)
+# endif
+
+# export PATH := $(PATH):$(GOPATH)/bin
+
+# for mac 
+BRANCH			:= $(shell git branch | sed  's/* \(.*\)/\1/p')
+# for Linux
+# BRANCH			:= $(shell git branch | sed --quiet 's/* \(.*\)/\1/p')
+GITREV 			:= $(shell git rev-parse --short HEAD)
+BUILDTIME 		:= $(shell date '+%F %T %Z')
+COMPILERVERSION	:= $(subst go version ,,$(shell go version))
+PROJNAME        := pika_exporter
+
+define GENERATE_VERSION_CODE
+cat << EOF | gofmt > version.go
+package main
+
+const (
+	BuildVersion   = "$(BRANCH)"
+    BuildCommitSha = "$(GITREV)"
+    BuildDate      = "$(BUILDTIME)"
+    GoVersion      = "$(COMPILERVERSION)"
+)
+EOF
+endef
+export GENERATE_VERSION_CODE
+
+PACKAGES := $$(go list ./...| grep -vE 'vendor')
+FILES    := $$(find . -name '*.go' | grep -vE 'vendor')
+
+define TEST_COVER
+#!/bin/bash
+
+set -e
+
+which gocov >/dev/null || go get -v -u github.com/axw/gocov/gocov
+
+COV_FILE=coverage.txt
+COV_TMP_FILE=coverage_tmp.txt
+
+rm -f $$COV_FILE
+rm -f $$COV_TMP_FILE
+touch $$COV_TMP_FILE
+
+echo "mode: count" > $$COV_FILE
+
+for pkg in $(PACKAGES); do
+	go test -v $$pkg -covermode=count -coverprofile=$$COV_TMP_FILE
+	tail -n +2 $$COV_TMP_FILE >> $$COV_FILE || (echo "Unable to append coverage for $$pkg" && exit 1)
+done
+
+gocov convert $$COV_FILE | gocov report | grep 'Total Coverage'
+
+rm -f $$COV_FILE
+rm -f $$COV_TMP_FILE
+
+endef
+export TEST_COVER
+
+all: build 
+
+build: deps
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -mod=readonly -o bin/$(PROJNAME)
+
+deps: generateVer
+	@mkdir -p bin
+
+generateVer:
+	@echo "$$GENERATE_VERSION_CODE" | bash
+
+test:
+	@echo "$$TEST_COVER" | bash
+
+race:
+	go test -v -race $(PACKAGES)
+
+check:
+	which golint >/dev/null || go get -v -u github.com/golang/lint/golint
+	@echo "vet"
+	@go tool vet $(FILES) 2>&1 | awk '{print} END{if(NR>0) {exit 1}}'
+	@echo "vet --shadow"
+	@go tool vet --shadow $(FILES) 2>&1 | awk '{print} END{if(NR>0) {exit 1}}'
+	@echo "golint"
+ifdef LINTEXCEPTION
+	@golint $(PACKAGES) | grep -vE'$(LINTEXCEPTION)' | awk '{print} END{if(NR>0) {exit 1}}'
+else
+	@golint $(PACKAGES) | awk '{print} END{if(NR>0) {exit 1}}'
+endif
+
+errcheck:
+	which errcheck >/dev/null || go get -v -u github.com/kisielk/errcheck
+	errcheck -blank $(PACKAGES)
+
+clean:
+	@rm -rf bin
+	@go clean -i ./...
+
+dev: check test race build
+
+update:
+	which glide >/dev/null || curl https://glide.sh/get | sh
+	which glide-vc || go get -v -u github.com/sgotti/glide-vc
+	rm -r vendor
+ifdef PKG
+	glide get -v --skip-test $(PKG)
+else
+	glide update -v -u --skip-test
+endif
+	@echo "removing test files"
+	glide vc --only-code --no-tests --use-lock-file