docs: added an Antora extension that get versions from Makefile an inject the result as AsciiDoc attributes

Signed-off-by: Fabrice Flore-Thébault <ffloreth@redhat.com>

Author: themr0c

antora-playbook.yml

@@ -29,6 +29,7 @@ urls:
 antora:
   extensions:
     - "@antora/lunr-extension"
+    - ./docs/extensions/get-versions.js
 asciidoc:
   sourcemap: true
   attributes:

docs/extensions/get-versions.js

@@ -0,0 +1,52 @@
+"use strict";
+const fs = require("fs");
+const child_process = require("child_process");
+module.exports.register = function () {
+  this.on("playbookBuilt", function ({ playbook }) {
+    // Get versions from Makefile
+    // Use utf8 encoding to have a string rather than a buffer in the output
+    const ocp_ver_full = child_process.execSync(
+      "grep '^OPENSHIFT_VERSION' Makefile | cut -d' ' -f3 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+    const ocp_ver = child_process.execSync(
+      "grep '^OPENSHIFT_VERSION' Makefile | cut -d' ' -f3 | cut -d'.' -f-2 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+    const podman_ver = child_process.execSync(
+      "grep '^PODMAN_VERSION' Makefile | cut -d' ' -f3 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+    const prod_ver_full = child_process.execSync(
+      "grep '^CRC_VERSION' Makefile | cut -d' ' -f3 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+    const prod_ver = child_process.execSync(
+      "grep '^CRC_VERSION' Makefile | cut -d' ' -f3 | cut -d'.' -f-2 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+    const ushift_ver = child_process.execSync(
+      "grep '^MICROSHIFT_VERSION' Makefile | cut -d' ' -f3 | tr -d '\n'",
+      { encoding: "utf8" }
+    );
+
+    // Display versions
+    console.log("OpenShift patch version: " + ocp_ver_full);
+    console.log("OpenShift minor version: " + ocp_ver);
+    console.log("Podman version: " + podman_ver);
+    console.log("CRC patch version: " + prod_ver_full);
+    console.log("CRC minor version: " + prod_ver);
+    console.log("MicroShift version: " + ushift_ver);
+
+    // Set attributes values
+    Object.assign(playbook.asciidoc.attributes, {
+      "ocp-ver": ocp_ver,
+      "ocp-ver-full": ocp_ver_full,
+      "podman-ver": podman_ver,
+      "prod-ver": prod_ver,
+      "prod-ver-full": prod_ver_full,
+      "ushift-ver": ushift_ver,
+    });
+    this.updateVariables({ playbook });
+  });
+};