internal/database: add postgres migrations

internal/database/migrations/1513981282_certificates.down.sql

@@ -0,0 +1,2 @@
+DROP INDEX Certificates_domain;
+DROP TABLE Certificates;

internal/database/migrations/1513981282_certificates.up.sql

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+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+CREATE TABLE IF NOT EXISTS Certificates
+  ( id         UUID         PRIMARY KEY DEFAULT uuid_generate_v1mc()
+  , domain     VARCHAR(256) NOT NULL
+  , data       TEXT         NOT NULL
+  , created_at TIMESTAMP    NOT NULL DEFAULT NOW()
+  , edited_at  TIMESTAMP    NOT NULL DEFAULT NOW()
+  , active     BOOLEAN      NOT NULL DEFAULT true
+  );
+
+CREATE UNIQUE INDEX IF NOT EXISTS Certificates_domain ON Certificates (domain);

internal/database/migrations/1513981599_routes.down.sql

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+DROP TABLE Routes;

internal/database/migrations/1513981599_routes.up.sql

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+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+CREATE TABLE IF NOT EXISTS Routes
+  ( id         UUID         PRIMARY KEY DEFAULT uuid_generate_v1mc()
+  , creator    VARCHAR(32)  NOT NULL
+  , hostname   VARCHAR(256) NOT NULL
+  , created_at TIMESTAMP    NOT NULL DEFAULT NOW()
+  , edited_at  TIMESTAMP    NOT NULL DEFAULT NOW()
+  , active     BOOLEAN      NOT NULL DEFAULT true
+  );
+
+CREATE UNIQUE INDEX IF NOT EXISTS Routes_hostname on Routes (hostname);

internal/database/migrations/1513982254_tokens.down.sql

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+DROP INDEX Tokens_body;
+
+DROP TABLE Tokens;

internal/database/migrations/1513982254_tokens.up.sql

@@ -0,0 +1,13 @@
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+CREATE TABLE IF NOT EXISTS Tokens
+  ( id         UUID         PRIMARY KEY DEFAULT uuid_generate_v1mc()
+  , body       VARCHAR(256) NOT NULL
+  , creator    VARCHAR(32)  NOT NULL
+  , scopes     TEXT[]       NOT NULL
+  , created_at TIMESTAMP    NOT NULL DEFAULT NOW()
+  , expires_at TIMESTAMP    NOT NULL
+  , active     BOOLEAN      NOT NULL DEFAULT true
+  );
+
+CREATE UNIQUE INDEX IF NOT EXISTS Tokens_body on Tokens (body);