Add script to connect testagent with controller

Signed-off-by: Joonas Rautiola <[email protected]>

scripts/connect-testagent.sh

@@ -0,0 +1,138 @@
+#!/usr/bin/env bash
+
+# SPDX-FileCopyrightText: 2022-2024 TII (SSRC) and the Ghaf contributors
+# SPDX-License-Identifier: Apache-2.0
+
+set -u          # treat unset variables as an error and exit
+set -o pipefail # exit if any pipeline command fails
+
+################################################################################
+
+MYNAME=$(basename "$0")
+RED='' NONE=''
+
+usage() {
+    echo "Usage: $MYNAME -a AGENT -c CONTROLLER"
+    echo ""
+    echo "Connect given testagent to given jenkins controller."
+    echo "You must have ssh access and passwordless sudo on both."
+    echo ""
+    echo "Options:"
+    echo " -h    Print this help message"
+    echo " -a    SSH address of the testagent"
+    echo " -c    SSH address of the jenkins controller"
+    echo " -v    Set the script verbosity to DEBUG"
+    echo ""
+    echo "Example:"
+    echo ""
+    echo "  $MYNAME -a user@testagent-release -c ghaf-jenkins-controller-release.northeurope.cloudapp.azure.com"
+    echo ""
+}
+
+################################################################################
+
+print_err() {
+    printf "${RED}Error:${NONE} %b\n" "$1" >&2
+}
+
+argparse() {
+    OPTIND=1
+    OPT_a=""
+    OPT_c=""
+    DEBUG="false"
+    while getopts "hva:c:" copt; do
+        case "${copt}" in
+        h)
+            usage
+            exit 0
+            ;;
+        a)
+            OPT_a="$OPTARG"
+            ;;
+        c)
+            OPT_c="$OPTARG"
+            ;;
+        v)
+            DEBUG="true"
+            ;;
+        *)
+            print_err "unrecognized option"
+            usage
+            exit 1
+            ;;
+        esac
+    done
+    shift $((OPTIND - 1))
+    if [ -n "$*" ]; then
+        print_err "unsupported positional argument(s): '$*'"
+        exit 1
+    fi
+    if [ -z "$OPT_a" ] || [ -z "$OPT_c" ]; then
+        print_err "missing mandatory option(s)"
+        usage
+        exit 1
+    fi
+}
+
+# shellcheck disable=SC2086 # intended word splitting of $OPT_c
+get_controller_details() {
+    if ! CONTROLLER="$(ssh $OPT_c "cat /var/lib/jenkins-casc/url")"; then
+        print_err "Failed reading jenkins controller url!"
+        exit 1
+    fi
+    if ! ADMIN_PASSWORD="$(ssh $OPT_c "sudo cat /var/lib/jenkins/secrets/initialAdminPassword")"; then
+        print_err "Failed reading jenkins admin password!"
+        exit 1
+    fi
+}
+
+test_remote_sudo() {
+    # shellcheck disable=SC2086 # intented word splitting of $OPT_s
+    ssh -tt -o ConnectTimeout=5 $1 "sudo -n true || exit 9" >/dev/null
+    ret="$?"
+    if [ "$ret" = "9" ]; then
+        print_err "sudo on remote host requires password"
+        exit 1
+    elif [ "$ret" != "0" ]; then
+        print_err "ssh connection to remote host failed"
+        exit 1
+    fi
+}
+
+# shellcheck disable=SC2086 # intended word splitting of $OPT_a
+# shellcheck disable=SC2029 # intended client side expansion of $CONTROLLER
+write_jenkins_env() {
+    if ! ssh $OPT_a "\
+        sudo bash -c 'echo 'CONTROLLER=$CONTROLLER' > /var/lib/jenkins/jenkins.env'
+        sudo bash -c 'echo 'ADMIN_PASSWORD=$ADMIN_PASSWORD' >> /var/lib/jenkins/jenkins.env'
+        sudo systemctl restart setup-agents.service
+        "; then
+        print_err "Failed connecting agent"
+        exit 1
+    fi
+}
+
+################################################################################
+
+main() {
+    # Colorize output if stdout is to a terminal (and not to pipe or file)
+    if [ -t 1 ]; then
+        RED='\033[1;31m'
+        NONE='\033[0m'
+    fi
+    argparse "$@"
+    if [ "$DEBUG" = "true" ]; then
+        set -x
+    fi
+
+    test_remote_sudo "$OPT_c"
+    test_remote_sudo "$OPT_a"
+    get_controller_details
+    write_jenkins_env
+    echo ""
+    echo "Agent is now connected!"
+}
+
+main "$@"
+
+################################################################################