From be49f7c93d8ce82f43429cfbcfcba370a3aa1814 Mon Sep 17 00:00:00 2001
From: Shiming Zhang <wzshiming@foxmail.com>
Date: Fri, 24 Dec 2021 17:49:38 +0800
Subject: [PATCH] Add image filter and update README

---
 README.md            | 11 +++++--
 hack/image-filter.sh | 78 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+), 2 deletions(-)
 create mode 100755 hack/image-filter.sh

diff --git a/README.md b/README.md
index b26203d..de23cc7 100644
--- a/README.md
+++ b/README.md
@@ -58,14 +58,21 @@ k8s.gcr.io/coredns/coredns => k8s-gcr.m.daocloud.io/coredns/coredns
 ## 最佳实践
 * 通过 加速 安装 kubeadm
 ``` bash
-# 使用 kubeadm 安装的时候指定 --image-repository 参数, 指定安装的镜像前缀
 kubeadm config images pull --image-repository k8s-gcr.m.daocloud.io
 ```
 
 * 通过 加速 安装 kind
 
-
 ``` bash
 kind create cluster --name kind  --image docker.m.daocloud.io/kindest/node:v1.22.1
 ``` 
 
+* 通过 加速 部署 应用(这里以 Ingress 为例)
+
+``` bash
+wget -o image-filter.sh https://github.com/DaoCloud/public-image-mirror/raw/main/hack/image-filter.sh && chmod +x image-filter.sh
+
+wget -o deploy.yaml https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.1.0/deploy/static/provider/baremetal/deploy.yaml
+
+cat ./deploy.yaml | ./image-filter.sh | kubectl apply -f -
+``` 
diff --git a/hack/image-filter.sh b/hack/image-filter.sh
new file mode 100755
index 0000000..31c951a
--- /dev/null
+++ b/hack/image-filter.sh
@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+
+if [[ "${#}" -ne 0 && "$1" != "-" ]]; then
+    tmp=$(cat "${1}")
+else
+    tmp=$(cat)
+fi
+
+domains=(
+    cr.l5d.io
+    docker.elastic.co
+    docker.io
+    gcr.io
+    ghcr.io
+    k8s.gcr.io
+    mcr.microsoft.com
+    nvcr.io
+    quay.io
+    registry.jujucharms.com
+    rocks.canonical.com
+)
+
+SUFFIX=${SUFFIX:-"m.daocloud.io"}
+
+function replace_domain() {
+    local domain="${1}"
+    IFS='.' read -ra arr <<<"${domain}"
+    local len=${#arr[@]}
+    if [[ "${len}" -eq 2 ]]; then
+        echo "${arr[0]}.${SUFFIX}"
+        return 0
+    fi
+
+    if [[ "${arr[0]}" == "registry" ]]; then
+        echo "${arr[1]}.${SUFFIX}"
+        return 0
+    fi
+    if [[ "${arr[0]}" == "docker" ]]; then
+        echo "${arr[1]}.${SUFFIX}"
+        return 0
+    fi
+    if [[ "${arr[0]}" == "cr" ]]; then
+        echo "${arr[1]}.${SUFFIX}"
+        return 0
+    fi
+
+    if [[ "${arr[0]}" =~ cr$ ]]; then
+        echo "${arr[0]}.${SUFFIX}"
+        return 0
+    fi
+
+    unset 'arr[${#arr[@]}-1]'
+
+    IFS='-'
+    echo "${arr[*]}.${SUFFIX}"
+
+    unset IFS
+    return 0
+}
+
+function replace_all() {
+    tmp="${1}"
+    for line in ${domains[*]}; do
+        key="${line}"
+        val="$(replace_domain ${line})"
+        if [[ "${key}" == "" || "${val}" == "" ]]; then
+            continue
+        fi
+        tmp="$(echo "${tmp}" | sed -e "s# ${key}# ${val}#g")"
+    done
+
+    # Remove sha256 hash
+    tmp="$(echo "${tmp}" | sed -e "s#@sha256:[0-9a-f]\{64\}##g")"
+    echo "${tmp}"
+}
+
+
+replace_all "${tmp}"