Use shorter experiment IDs

Because https://app.openpipe.ai/experiments/B1EtN6oHeXMele2 is a cooler URL than https://app.openpipe.ai/experiments/3692942c-6f1b-4bef-83b1-c11f00a3fbdd
2023-08-17 23:28:56 -07:00
parent 4e2ae7a441
commit 296eb23d97
9 changed files with 143 additions and 56 deletions
--- a/app/prisma/migrations/20230818055303_add_slug_to_experiment/migration.sql
+++ b/app/prisma/migrations/20230818055303_add_slug_to_experiment/migration.sql
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2023 Viascom Ltd liab. Co
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+
+CREATE OR REPLACE FUNCTION nanoid(
+    size int DEFAULT 21,
+    alphabet text DEFAULT '_-0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
+)
+    RETURNS text
+    LANGUAGE plpgsql
+    volatile
+AS
+$$
+DECLARE
+    idBuilder      text := '';
+    counter        int  := 0;
+    bytes          bytea;
+    alphabetIndex  int;
+    alphabetArray  text[];
+    alphabetLength int;
+    mask           int;
+    step           int;
+BEGIN
+    alphabetArray := regexp_split_to_array(alphabet, '');
+    alphabetLength := array_length(alphabetArray, 1);
+    mask := (2 << cast(floor(log(alphabetLength - 1) / log(2)) as int)) - 1;
+    step := cast(ceil(1.6 * mask * size / alphabetLength) AS int);
+
+    while true
+        loop
+            bytes := gen_random_bytes(step);
+            while counter < step
+                loop
+                    alphabetIndex := (get_byte(bytes, counter) & mask) + 1;
+                    if alphabetIndex <= alphabetLength then
+                        idBuilder := idBuilder || alphabetArray[alphabetIndex];
+                        if length(idBuilder) = size then
+                            return idBuilder;
+                        end if;
+                    end if;
+                    counter := counter + 1;
+                end loop;
+
+            counter := 0;
+        end loop;
+END
+$$;
+
+
+-- Make a short_nanoid function that uses the default alphabet and length of 15
+CREATE OR REPLACE FUNCTION short_nanoid()
+    RETURNS text
+    LANGUAGE plpgsql
+    volatile
+AS
+$$
+BEGIN
+    RETURN nanoid(15, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
+END
+$$;
+
+-- AlterTable
+ALTER TABLE "Experiment" ADD COLUMN     "slug" TEXT NOT NULL DEFAULT short_nanoid();
+
+-- For existing experiments, keep the existing id as the slug for backwards compatibility
+UPDATE "Experiment" SET "slug" = "id";
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Experiment_slug_key" ON "Experiment"("slug");