update projects.

.gitignore

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+### Go template
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+

Makefile

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+# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
+ifeq (,$(shell go env GOBIN))
+GOBIN=$(shell go env GOPATH)/bin
+else
+GOBIN=$(shell go env GOBIN)
+endif
+
+# Setting SHELL to bash allows bash commands to be executed by recipes.
+# Options are set to exit when a recipe line exits non-zero or a piped command fails.
+SHELL = /usr/bin/env bash -o pipefail
+.SHELLFLAGS = -ec
+
+.PHONY: all
+all: build
+
+##@ General
+
+# The help target prints out all targets with their descriptions organized
+# beneath their categories. The categories are represented by '##@' and the
+# target descriptions by '##'. The awk command is responsible for reading the
+# entire set of makefiles included in this invocation, looking for lines of the
+# file as xyz: ## something, and then pretty-format the target and help. Then,
+# if there's a line with ##@ something, that gets pretty-printed as a category.
+# More info on the usage of ANSI control characters for terminal formatting:
+# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters
+# More info on the awk command:
+# http://linuxcommand.org/lc3_adv_awk.php
+
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+##@ Development
+
+.PHONY: fmt
+fmt: ## Run go fmt against code.
+	go fmt ./...
+
+.PHONY: vet
+vet: ## Run go vet against code.
+	go vet ./...
+
+##@ Build
+
+.PHONY: build
+build: fmt vet ## Build cert-generator binary.
+	go build -o bin/cert-generator cmd/main.go
+
+.PHONY: run
+run: fmt vet ## Run a cert-generator from your host.
+	go run ./cmd/main.go
+
+
+## Location to install dependencies to
+LOCALBIN ?= $(shell pwd)/bin
+$(LOCALBIN):
+	mkdir -p $(LOCALBIN)
+
+# go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
+# $1 - target path with name of binary (ideally with version)
+# $2 - package url which can be installed
+# $3 - specific version of package
+define go-install-tool
+@[ -f $(1) ] || { \
+set -e; \
+package=$(2)@$(3) ;\
+echo "Downloading $${package}" ;\
+GOBIN=$(LOCALBIN) go install $${package} ;\
+mv "$$(echo "$(1)" | sed "s/-$(3)$$//")" $(1) ;\
+}
+endef

README.md

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+## Cert Generator
+
+[]()
+
+---
+
+### Description
+
+---
+cert-generator is a tool to generate certs and to simplify the process and complexity of generating certificates.
+
+### Getting Started
+
+---
+
+- [x] build the exec binary.
+```shell
+make build
+```
+
+```shell
+bin/cert-generator
+```
+- [x] get help information
+```shell
+bin/cert-generator --help
+```
+
+```shell
+Usage of bin/cert-generator:
+  -ca-common-name string
+        The common name of CA.
+  -ca-country string
+        The country of CA, multiple items separated by ',', Default: CN. (default "CN")
+  -ca-domains string
+        The domain of CA, multiple items separated by ','.
+  -ca-organization string
+        The organization of CA, multiple items separated by ','
+  -ca-years int
+        The validate years of CA, Default: 50. (default 50)
+  -cert-path string
+        The path to save certificate. (default "/tmp")
+  -kubeconfig string
+        Paths to a kubeconfig. Only required if out-of-cluster.
+  -zap-devel
+        Development Mode defaults(encoder=consoleEncoder,logLevel=Debug,stackTraceLevel=Warn). Production Mode defaults(encoder=jsonEncoder,logLevel=Info,stackTraceLevel=Error)
+  -zap-encoder value
+        Zap log encoding (one of 'json' or 'console')
+  -zap-log-level value
+        Zap Level to configure the verbosity of logging. Can be one of 'debug', 'info', 'error', or any integer value > 0 which corresponds to custom debug levels of increasing verbosity
+  -zap-stacktrace-level value
+        Zap Level at and above which stacktraces are captured (one of 'info', 'error', 'panic').
+  -zap-time-encoding value
+        Zap time encoding (one of 'epoch', 'millis', 'nano', 'iso8601', 'rfc3339' or 'rfc3339nano'). Defaults to 'epoch'.
+```
+- [x] generate a cert
+```shell
+bin/cert-generator -ca-country=china -ca-common-name=shenzhen -ca-domains=kube-system.metrics-server.svc,kube-system.coredns.svc -ca-organization=kubernetes -ca-years=50
+```
+
+```shell
+--------------------------------------------------------------------------------------------
+#   CA Country: china
+#   CA Organization: kubernetes
+#   CA Domains: kube-system.metrics-server.svc,kube-system.coredns.svc
+#   Cert Path: /tmp
+#   Common Name: shenzhen
+#   Validate Years: 50 years
+#   CRT: /tmp/tls.crt
+#   Key: /tmp/tls.key
+--------------------------------------------------------------------------------------------
+```

cmd/main.go

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+/*
+Copyright 2024 Hurricane1988 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.
+*/
+
+package main
+
+import (
+	"flag"
+	"github.com/hurricane1988/cert-generator/pkg/certificate"
+	"github.com/hurricane1988/cert-generator/pkg/utils"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	"strings"
+)
+
+var (
+	setupLog = ctrl.Log.WithName("setup")
+)
+
+func main() {
+	var (
+		country       string
+		organization  string
+		certPath      string
+		validateYears int
+		domains       string
+		commonName    string
+	)
+	flag.StringVar(&country, "ca-country", "CN", "The country of CA, multiple items separated by ',', Default: CN.")
+	flag.StringVar(&organization, "ca-organization", "", "The organization of CA, multiple items separated by ','")
+	flag.StringVar(&domains, "ca-domains", "", "The domain of CA, multiple items separated by ','.")
+	flag.StringVar(&certPath, "cert-path", "/tmp", "The path to save certificate.")
+	flag.StringVar(&commonName, "ca-common-name", "", "The common name of CA.")
+	flag.IntVar(&validateYears, "ca-years", 50, "The validate years of CA, Default: 50.")
+	opts := zap.Options{
+		Development: false,
+	}
+	opts.BindFlags(flag.CommandLine)
+	flag.Parse()
+	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+	certificate.NewCertificate(certificate.Options{
+		Country:       strings.Split(country, ","),
+		CertPath:      certPath,
+		Organization:  strings.Split(organization, ","),
+		ValidateYears: validateYears,
+		Domains:       strings.Split(domains, ","),
+		CommonName:    commonName,
+	}).CreateCertificate()
+
+	// 打印终端
+	// utils.Print()
+	utils.Info(country, organization, domains, certPath, commonName, validateYears)
+}