added hostname plugin

hostname/hostname.sh

@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+
+# NOTE: DOES NOT APPLY TO FUNCTIONS CALLED INSIDE IF CONDITIONS OR WITH ||/&& CHAINS
+set -e
+
+eval "$(nk plugin helper bash 2>/dev/null)"
+
+hostname::_provision_macos() {
+    declare current_host_name
+    current_host_name="$(scutil --get 'HostName')"
+    if [[ "$current_host_name" != "$hostname" ]]; then
+        sudo scutil --set 'HostName' "$hostname" \
+            || return "$(nk::error "$?" 'failed setting HostName')"
+        changed='true'
+    fi
+
+    declare current_local_host_name
+    current_local_host_name="$(scutil --get 'LocalHostName')"
+    if [[ "$current_local_host_name" != "$hostname" ]]; then
+        sudo scutil --set 'LocalHostName' "$hostname" \
+            || return "$(nk::error "$?" 'failed setting LocalHostName')"
+        changed='true'
+    fi
+
+    declare current_computer_name
+    current_computer_name="$(scutil --get 'ComputerName')"
+    if [[ "$current_computer_name" != "$hostname" ]]; then
+        sudo scutil --set 'ComputerName' "$hostname" \
+            || return "$(nk::error "$?" 'failed setting ComputerName')"
+        changed='true'
+    fi
+
+    if [[ "$changed" == 'true' ]]; then
+        dscacheutil -flushcache \
+            || return "$(nk::error "$?" 'failed flushing ds cache')"
+    fi
+}
+
+hostname::_provision_linux() {
+    declare current_hostname
+    current_hostname="$(hostnamectl hostname)"
+
+    if [[ "$current_hostname" != "$hostname" ]]; then
+        sudo hostnamectl hostname "$hostname" \
+            || return "$(nk::error "$?" 'failed setting hostname')"
+        changed='true'
+    fi
+}
+
+hostname::_provision_unix() {
+    declare current_hostname
+    current_hostname="$(cat /etc/hostname)"
+
+    if [[ "$current_hostname" != "$hostname" ]]; then
+        sudo tee /etc/hostname <<< "$hostname" \
+            || return "$(nk::error "$?" 'failed setting hostname')"
+        changed='true'
+    fi
+}
+
+hostname::_provision() {
+    if [[ "$OSTYPE" == darwin* ]]; then
+        hostname::_provision_macos
+    elif which hostnamectl >/dev/null; then
+        hostname::hostname::_provision_linux
+    else
+        hostname::hostname::_provision_unix
+    fi
+}
+
+hostname::provision() {
+    while read -r hostname; do
+        # provision
+        declare status='success'
+        declare changed='false'
+        declare output=''
+        if ! nk::run_for_output output hostname::_provision; then
+            status='failed'
+        fi
+
+        declare description="hostname ${hostname}"
+
+        # log state details
+        nk::log_result \
+            "$status" \
+            "$changed" \
+            "$description" \
+            "$output"
+    done <<< "$(jq -r --compact-output '.[].state')"
+}
+
+case "$1" in
+    provision)
+        hostname::provision "${@:2}"
+        ;;
+    *)
+        echo "hostname: unrecognized subcommand ${1}" 1>&2
+        exit 1
+        ;;
+esac

hostname/plugin.yml

@@ -0,0 +1,11 @@
+name: hostname
+when: family == "unix"
+
+provision:
+  when: declaration == "hostname"
+
+executable: hostname.sh
+
+schema:
+  $schema: https://json-schema.org/draft/2020-12/schema
+  type: string