my first content!

wrap sample pages in Layout
add build script
2024-11-19 21:20:04 -05:00 · 2024-11-19 21:19:51 -05:00 · 2024-11-19 21:19:31 -05:00 · 2024-11-19 21:19:07 -05:00
6 changed files with 62 additions and 30 deletions
@@ -1,3 +1,3 @@
-nodejs 20.15.1
+nodejs 22.8.0
 # python 3.12.4
 pnpm 9.7.1
@@ -13,7 +13,7 @@ COPY . /app
 RUN pnpm run build


-FROM base
+FROM base AS final
 WORKDIR /app
 COPY --from=prod /app/node_modules /app/node_modules
 COPY --from=prod /app/dist /app
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+REGISTRY=registry.sakal.us
+IMAGE_NAME=blog-astro
+
+# get version from package.json and remove quotes:
+VERSION=$(pnpm pkg get version | xargs)
+
+
+docker build -t "${REGISTRY}/${IMAGE_NAME}:v${VERSION}" --target final .
+docker push "${REGISTRY}/${IMAGE_NAME}:v${VERSION}"
@@ -0,0 +1,32 @@
+---
+title: MySQL JSON Shenanigans
+date: 2024-11-19
+---
+
+In an effort to support out-of-date installations of our app, I had to keep a JSON column in our database. The column is obsolete, as are the values within it; but these installations continue to use it. So, knowing this, I decided to put the proper values into the column. I didn't want to pollute the code of our services to do so, though. So I made it into a `GENERATED` column.
+
+I ran into two issues.
+
+First, MySQL doesn't have a way to omit `NULL` values from a JSON array.
+
+Second, the strings in the resulting array had `\u0000` interspersed between each character. This is due to how MySQL represents strings in a regular column versus how they are represented in a JSON column. I'd have to look it up, but I think I recall that by default MySQL varchars are 16-bits per character, and JSON strings are UTF-8.
+
+I "solved" the first issue by using `IF()` statements to represent all possible combinations of values. Luckily there were only 4. The only other solution I saw involved `TRIGGER`s. No, thank you.
+
+The second issue was solved by using `JSON_QUOTE()` followed by `JSON_UNQUOTE()` to remove the `\u0000` characters.
+
+```sql
+ALTER TABLE lectures
+MODIFY COLUMN vimeo_video_links JSON GENERATED ALWAYS AS (
+  IF(m3u8_url IS NOT NULL AND mp4_url IS NOT NULL,
+  JSON_ARRAY(JSON_UNQUOTE(JSON_QUOTE(m3u8_url)), JSON_UNQUOTE(JSON_QUOTE(mp4_url))),
+  IF(m3u8_url IS NOT NULL AND mp4_url IS NULL,
+    JSON_ARRAY(JSON_UNQUOTE(JSON_QUOTE(m3u8_url))),
+    IF(m3u8_url IS NULL AND mp4_url IS NOT NULL,
+      JSON_ARRAY(JSON_UNQUOTE(JSON_QUOTE(mp4_url))),
+      NULL
+    )
+  )
+  )
+) STORED;
+```
@@ -1,17 +1,12 @@
 ---
+import Layout from "../layouts/Layout.astro";
+
 export const prerender = false;
 ---
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width" />
-    <title>Current Time</title>
-  </head>
-  <body>
-    <h1>Current Time</h1>
-    <p>This page is rendered on the server.</p>
-    <time datetime={new Date().toISOString()}>
-      {new Date().toLocaleString()}
-    </time>
-  </body>
-</html>
+<Layout title="Current Time">
+  <h1>Current Time</h1>
+  <p>This page is rendered on the server.</p>
+  <time datetime={new Date().toISOString()}>
+    {new Date().toLocaleString()}
+  </time>
+</Layout>
@@ -1,16 +1,10 @@
 ---
+import Layout from '../layouts/Layout.astro';
 ---
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width" />
-    <title>Current Time</title>
-  </head>
-  <body>
-    <h1>Current Time</h1>
-    <p>This page is rendered on the server.</p>
-    <time datetime={new Date().toISOString()}>
-      {new Date().toLocaleString()}
-    </time>
-  </body>
-</html>
+<Layout title='Prerendered Time'>
+  <h1>Current Time</h1>
+  <p>This page is rendered on the server.</p>
+  <time datetime={new Date().toISOString()}>
+    {new Date().toLocaleString()}
+  </time>
+</Layout>
Author	SHA1	Message	Date
Avraham Sakal	0119df3a20	my first content!	2024-11-19 21:20:04 -05:00
Avraham Sakal	d090f650af	wrap sample pages in `Layout`	2024-11-19 21:19:51 -05:00
Avraham Sakal	490ae1898e	add build script	2024-11-19 21:19:31 -05:00
Avraham Sakal	b46f213b2d	bump Node version	2024-11-19 21:19:07 -05:00