Initial commit of macos and linux install script (#146)

* Initial commit of linux installation script

* sudo checking

* add more helper functions

* add licence

* Add usage

* use single commandline for macos and linux

* Add more logs

install/README.md

@@ -1,19 +1,13 @@
 # Dapr CLI Installer
 
-## Install Dapr CLI
-
-### Windows
+## Windows
 
 ```
 powershell -Command "iwr -useb https://raw.githubusercontent.com/dapr/cli/master/install/install.ps1 | iex"
 ```
 
-Note: Until the repo is public, please use the below command.
+## MacOS/Linux
 
 ```
-powershell -Command "$Env:GITHUB_USER='your_github_id'; $Env:GITHUB_TOKEN='your_github_pat_token'; iwr -useb https://raw.githubusercontent.com/dapr/cli/master/install/install.ps1?token=AC2QIRDUTKTPEPOE5W7HOH25VJ72W | iex"
+curl -fsSL https://raw.githubusercontent.com/dapr/cli/master/install/install.sh | /bin/bash
 ```
-
-### Linux/MacOS
-
-WIP.

install/install.sh

@@ -0,0 +1,182 @@
+#!/usr/bin/env bash
+
+# ------------------------------------------------------------
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+# ------------------------------------------------------------
+
+# Dapr CLI location
+: ${DAPR_INSTALL_DIR:="/usr/local/bin"}
+
+# sudo is required to copy binary to DAPR_INSTALL_DIR for linux
+: ${USE_SUDO:="false"}
+
+# Http request CLI
+DAPR_HTTP_REQUEST_CLI=curl
+
+# GitHub Organization and repo name to download release
+GITHUB_ORG=dapr
+GITHUB_REPO=cli
+
+# Dapr CLI filename
+DAPR_CLI_FILENAME=dapr
+
+DAPR_CLI_FILE="${DAPR_INSTALL_DIR}/${DAPR_CLI_FILENAME}"
+
+getSystemInfo() {
+    ARCH=$(uname -m)
+    case $ARCH in
+        armv7*) ARCH="arm";;
+        aarch64) ARCH="arm64";;
+        x86_64) ARCH="amd64";;
+    esac
+
+    OS=$(echo `uname`|tr '[:upper:]' '[:lower:]')
+
+    # Most linux distro needs root permission to copy the file to /usr/local/bin
+    if [ "$OS" == "linux" ] && [ "$DAPR_INSTALL_DIR" == "/usr/local/bin" ]; then
+        USE_SUDO="true"
+    fi
+}
+
+verifySupported() {
+    local supported=(darwin-amd64 linux-amd64 linux-arm linux-arm64)
+    local current_osarch="${OS}-${ARCH}"
+
+    for osarch in "${supported[@]}"; do
+        if [ "$osarch" == "$current_osarch" ]; then
+            echo "Your system is ${OS}_${ARCH}"
+            return
+        fi
+    done
+
+    echo "No prebuilt binary for ${current_osarch}"
+    exit 1
+}
+
+runAsRoot() {
+    local CMD="$*"
+
+    if [ $EUID -ne 0 -a $USE_SUDO = "true" ]; then
+        CMD="sudo $CMD"
+    fi
+
+    $CMD
+}
+
+checkHttpRequestCLI() {
+    if type "curl" > /dev/null; then
+        DAPR_HTTP_REQUEST_CLI=curl
+    elif type "wget" > /dev/null; then
+        DAPR_HTTP_REQUEST_CLI=wget
+    else
+        echo "Either curl or wget is required"
+        exit 1
+    fi
+}
+
+checkExistingDapr() {
+    if [ -f "$DAPR_CLI_FILE" ]; then
+        echo -e "\nDapr CLI is detected:"
+        $DAPR_CLI_FILE --version
+        echo -e "Reinstalling Dapr CLI - ${DAPR_CLI_FILE}...\n"
+    else
+        echo -e "Installing Dapr CLI...\n"
+    fi
+}
+
+getLatestRelease() {
+    local daprReleaseUrl="https://api.github.com/repos/${GITHUB_ORG}/${GITHUB_REPO}/releases"
+    local latest_release=""
+
+    if [ "$DAPR_HTTP_REQUEST_CLI" == "curl" ]; then
+        latest_release=$(curl -s $daprReleaseUrl | grep \"tag_name\" | awk 'NR==1{print $2}' |  sed -n 's/\"\(.*\)\",/\1/p')
+    else
+        latest_release=$(wget -q --header="Accept: application/json" -O - $daprReleaseUrl | grep \"tag_name\" | awk 'NR==1{print $2}' |  sed -n 's/\"\(.*\)\",/\1/p')
+    fi
+
+    ret_val=$latest_release
+}
+
+downloadFile() {
+    LATEST_RELEASE_TAG=$1
+
+    DAPR_CLI_ARTIFACT="${DAPR_CLI_FILENAME}_${OS}_${ARCH}.tar.gz"
+    DOWNLOAD_BASE="https://github.com/${GITHUB_ORG}/${GITHUB_REPO}/releases/download"
+    DOWNLOAD_URL="${DOWNLOAD_BASE}/${LATEST_RELEASE_TAG}/${DAPR_CLI_ARTIFACT}"
+
+    # Create the temp directory
+    DAPR_TMP_ROOT=$(mktemp -dt dapr-install-XXXXXX)
+    ARTIFACT_TMP_FILE="$DAPR_TMP_ROOT/$DAPR_CLI_ARTIFACT"
+
+    echo "Downloading $DOWNLOAD_URL ..."
+    if [ "$DAPR_HTTP_REQUEST_CLI" == "curl" ]; then
+        curl -SsL "$DOWNLOAD_URL" -o "$ARTIFACT_TMP_FILE"
+    else
+        wget -q -O "$ARTIFACT_TMP_FILE" "$DOWNLOAD_URL"
+    fi
+
+    if [ ! -f "$ARTIFACT_TMP_FILE" ]; then
+        echo "failed to download $DOWNLOAD_URL ..."
+        exit 1
+    fi
+}
+
+installFile() {
+    tar xf "$ARTIFACT_TMP_FILE" -C "$DAPR_TMP_ROOT"
+    local tmp_root_dapr_cli="$DAPR_TMP_ROOT/$DAPR_CLI_FILENAME"
+
+    if [ ! -f "$tmp_root_dapr_cli" ]; then
+        echo "Failed to unpack Dapr cli executable."
+        exit 1
+    fi
+
+    chmod o+x $tmp_root_dapr_cli
+    runAsRoot cp "$tmp_root_dapr_cli" "$DAPR_INSTALL_DIR"
+
+    if [ -f "$DAPR_CLI_FILE" ]; then
+        echo "$DAPR_CLI_FILENAME installed into $DAPR_INSTALL_DIR successfully."
+
+        $DAPR_CLI_FILE --version
+    else 
+        echo "Failed to install $DAPR_CLI_FILENAME"
+        exit 1
+    fi
+}
+
+fail_trap() {
+    result=$?
+    if [ "$result" != "0" ]; then
+        echo "Failed to install Dapr CLI"
+        echo "For support, go to https://dapr.io"
+    fi
+    cleanup
+    exit $result
+}
+
+cleanup() {
+    if [[ -d "${DAPR_TMP_ROOT:-}" ]]; then
+        rm -rf "$DAPR_TMP_ROOT"
+    fi
+}
+
+installCompleted() {
+    echo -e "\nTo get started with Dapr, please visit https://github.com/dapr/docs/tree/master/getting-started"
+}
+
+# -----------------------------------------------------------------------------
+# main
+# -----------------------------------------------------------------------------
+trap "fail_trap" EXIT
+
+getSystemInfo
+verifySupported
+checkExistingDapr
+checkHttpRequestCLI
+
+getLatestRelease
+downloadFile $ret_val
+installFile
+cleanup
+
+installCompleted