feat: add basic functions for maas images

maas-images.inc

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+OS_CODENAME=focal
+OS_VERSION=20.04
+
+function get_streams()
+{
+    streams="$(mktemp)"
+    wget -qO "$streams" https://images.maas.io/ephemeral-v3/stable/streams/v1/com.ubuntu.maas:stable:v3:download.json
+}
+
+
+function find_oldest()
+{
+    # find locally
+    return 0
+}
+
+function get_latest_maas_id()
+{
+    if [ ! -f "$streams" ]; then
+        return 1
+    fi
+    release_version=$(jq -r '.products[]|select(.version=="'"$OS_VERSION"'" and .arch=="amd64" and .kflavor=="generic" and .subarch=="ga-'"$OS_VERSION"'")|.versions|keys|max' \
+        "$streams")
+}
+
+function get_checksum()
+{
+    local release_version="$1"
+    local filename="$2"
+    checksum=$(jq -r '.products[]|select(.version=="'"$OS_VERSION"'" and .arch=="amd64" and .kflavor=="generic" and .subarch=="ga-'"$OS_VERSION"'").versions."'"$release_version"'".items."'"$filename"'".sha256' \
+        "$streams")
+}
+
+function download_and_verify()
+{
+    local url="$1"
+    local checksum="$2"
+    local fname="$3"
+
+    wget "$url" -O "$fname"
+    sha256sum=$(sha256sum "$fname")
+    if [ "$sha256sum" == "$checksum" ]; then
+        return 0
+    fi
+    return 1
+}
+
+function cleanup_temp()
+{
+    if [ -f "$streams" ]; then
+        rm -f "$streams"
+    fi
+}
+
+function download_files()
+{
+    download kernel
+    download initrd
+    download squashfs
+
+    dd if=squashfs of="$partition" bs=1M
+
+    create_options_file
+    update_default
+    delete_oldest_if_needed
+    update_onerror_second_youngest
+}
+
+# vim: set ft=sh:

test.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+tests/maas.sh

tests/maas.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+function test_stream()
+{
+    local mimetype
+    get_streams
+    mimetype="$(file -b --mime-type "$streams")"
+    assertEquals "$mimetype" "application/json"
+    cleanup_temp
+}
+
+function test_latest_maas_id()
+{
+    get_latest_maas_id
+    assertEquals "20210223" "$release_version"
+}
+
+function test_checksum()
+{
+    get_checksum 20210223 manifest
+    assertEquals "cf395299f1337f6ea69a86f70d76fb89b8a41274bbbe7047af43614a867a4af2" "$checksum"
+}
+
+#function test_download()
+#{
+#    download_and_verify https://images.maas.io/ephemeral-v3/stable/${OS_CODENAME}/amd64/${id}/squashfs
+#    assertEquals "$?" 0
+#}
+
+function oneTimeSetUp()
+{
+    . maas-images.inc
+}
+
+function setUp()
+{
+    export streams=tests/data/streams.json
+}
+
+# Load shUnit2.
+. /usr/bin//shunit2