feat(migration) add migration

migration/ddl/schema.sql

@@ -0,0 +1,66 @@
+CREATE TABLE tags
+(
+    id          SERIAL PRIMARY KEY,
+    name        VARCHAR(20) UNIQUE NOT NULL,
+    description TEXT DEFAULT ''
+);
+
+CREATE TABLE categories
+(
+    id          SERIAL PRIMARY KEY,
+    name        VARCHAR(20) UNIQUE NOT NULL,
+    description TEXT DEFAULT ''
+);
+
+CREATE TABLE post_status
+(
+    name VARCHAR(20) PRIMARY KEY
+);
+
+INSERT INTO post_status (name)
+VALUES ('draft'),
+       ('published'),
+       ('planned'),
+       ('hidden');
+
+CREATE TABLE posts
+(
+    id           UUID PRIMARY KEY,
+    identifier   VARCHAR(100) UNIQUE                       NOT NULL,
+    title        VARCHAR(255)                              NOT NULL,
+    subtitle     VARCHAR(255)                              NOT NULL,
+    date_created DATE                                      NOT NULL,
+    date_updated DATE,
+    status       VARCHAR(20) REFERENCES post_status (name) NOT NULL,
+    content      TEXT                                      NOT NULL,
+    hash         VARCHAR(44)                               NOT NULL,
+    category     INTEGER REFERENCES categories (id)        NOT NULL
+);
+
+CREATE TABLE post_tag
+(
+    post UUID REFERENCES posts (id) ON DELETE CASCADE,
+    tag  INTEGER REFERENCES tags (id) ON DELETE CASCADE,
+
+    CONSTRAINT post_tag_pk PRIMARY KEY (post, tag)
+);
+
+CREATE TABLE metadata
+(
+    pid        UUID REFERENCES posts (id) ON DELETE CASCADE NOT NULL,
+    meta_key   VARCHAR(50)                                  NOT NULL,
+    meta_value TEXT                                         NOT NULL,
+
+    CONSTRAINT metadata_pk PRIMARY KEY (pid, meta_key)
+);
+
+-- index
+CREATE INDEX idx_tags_name ON tags (name);
+CREATE INDEX idx_categories_name ON categories (name);
+CREATE INDEX idx_posts_identifier ON posts (identifier);
+CREATE INDEX idx_posts_status ON posts (status);
+CREATE INDEX idx_posts_category ON posts (category);
+CREATE INDEX idx_posts_date_created ON posts (date_created);
+CREATE INDEX idx_post_tag_post ON post_tag (post);
+CREATE INDEX idx_post_tag_tag ON post_tag (tag);
+CREATE INDEX idx_metadata_pid ON metadata (pid);

migration/migration.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -e
+
+PGPASSFILE="/root/.pgpass"
+echo "postgres:5432:${POSTGRES_DB}:${POSTGRES_USER}:${POSTGRES_PASSWORD}" > "$PGPASSFILE"
+chmod 600 "$PGPASSFILE"
+
+echo "waiting for postgres"
+until pg_isready -h postgres -U "$POSTGRES_USER" -d "$POSTGRES_DB"; do
+   echo "retrying, sleep 2s"
+   sleep 2
+done
+echo "db ready, running migrations"
+for file in /migrations/*.sql; do
+  echo "applying $file"
+  psql -h postgres -U "$POSTGRES_USER" -d "$POSTGRES_DB" -f "$file"
+done
+echo "migration complete"