Postgres Bucket Storage

.changeset/green-trainers-yell.md

@@ -0,0 +1,7 @@
+---
+'@powersync/service-module-postgres-storage': minor
+'@powersync/service-module-postgres': minor
+'@powersync/lib-service-postgres': minor
+---
+
+Initial release of Postgres bucket storage.

.env.template

@@ -1,3 +1,4 @@
 # Connections for tests
 MONGO_TEST_URL="mongodb://localhost:27017/powersync_test"
-PG_TEST_URL="postgres://postgres:postgres@localhost:5432/powersync_test"
+PG_TEST_URL="postgres://postgres:postgres@localhost:5432/powersync_test"
+PG_STORAGE_TEST_URL="postgres://postgres:postgres@localhost:5431/powersync_storage_test"

.github/workflows/test.yml

@@ -104,6 +104,18 @@ jobs:
             -d postgres:${{ matrix.postgres-version }} \
             -c wal_level=logical
 
+      - name: Start PostgreSQL (Storage)
+        run: |
+          docker run \
+            --health-cmd pg_isready \
+            --health-interval 10s \
+            --health-timeout 5s \
+            --health-retries 5 \
+            -e POSTGRES_PASSWORD=postgres \
+            -e POSTGRES_DB=powersync_storage_test \
+            -p 5431:5432 \
+            -d postgres:${{ matrix.postgres-version }}
+
       - name: Start MongoDB
         uses: supercharge/[email protected]
         with:
@@ -176,6 +188,18 @@ jobs:
           mongodb-version: '6.0'
           mongodb-replica-set: test-rs
 
+      - name: Start PostgreSQL (Storage)
+        run: |
+          docker run \
+            --health-cmd pg_isready \
+            --health-interval 10s \
+            --health-timeout 5s \
+            --health-retries 5 \
+            -e POSTGRES_PASSWORD=postgres \
+            -e POSTGRES_DB=powersync_storage_test \
+            -p 5431:5432 \
+            -d postgres:16
+
       - name: Setup NodeJS
         uses: actions/setup-node@v4
         with:
@@ -229,6 +253,18 @@ jobs:
           mongodb-version: ${{ matrix.mongodb-version }}
           mongodb-replica-set: test-rs
 
+      - name: Start PostgreSQL (Storage)
+        run: |
+          docker run \
+            --health-cmd pg_isready \
+            --health-interval 10s \
+            --health-timeout 5s \
+            --health-retries 5 \
+            -e POSTGRES_PASSWORD=postgres \
+            -e POSTGRES_DB=powersync_storage_test \
+            -p 5431:5432 \
+            -d postgres:16
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:

.prettierrc

@@ -4,5 +4,9 @@
   "tabWidth": 2,
   "useTabs": false,
   "printWidth": 120,
-  "trailingComma": "none"
+  "trailingComma": "none",
+  "plugins": ["prettier-plugin-embed", "prettier-plugin-sql"],
+  "embeddedSqlTags": ["sql", "db.sql", "this.db.sql"],
+  "language": "postgresql",
+  "keywordCase": "upper"
 }

libs/lib-postgres/CHANGELOG.md

@@ -0,0 +1 @@
+# @powersync/lib-service-postgres

libs/lib-postgres/LICENSE

@@ -0,0 +1,67 @@
+# Functional Source License, Version 1.1, Apache 2.0 Future License
+
+## Abbreviation
+
+FSL-1.1-Apache-2.0
+
+## Notice
+
+Copyright 2023-2024 Journey Mobile, Inc.
+
+## Terms and Conditions
+
+### Licensor ("We")
+
+The party offering the Software under these Terms and Conditions.
+
+### The Software
+
+The "Software" is each version of the software that we make available under these Terms and Conditions, as indicated by our inclusion of these Terms and Conditions with the Software.
+
+### License Grant
+
+Subject to your compliance with this License Grant and the Patents, Redistribution and Trademark clauses below, we hereby grant you the right to use, copy, modify, create derivative works, publicly perform, publicly display and redistribute the Software for any Permitted Purpose identified below.
+
+### Permitted Purpose
+
+A Permitted Purpose is any purpose other than a Competing Use. A Competing Use means making the Software available to others in a commercial product or service that:
+
+1. substitutes for the Software;
+2. substitutes for any other product or service we offer using the Software that exists as of the date we make the Software available; or
+3. offers the same or substantially similar functionality as the Software.
+
+Permitted Purposes specifically include using the Software:
+
+1. for your internal use and access;
+2. for non-commercial education;
+3. for non-commercial research; and
+4. in connection with professional services that you provide to a licensee using the Software in accordance with these Terms and Conditions.
+
+### Patents
+
+To the extent your use for a Permitted Purpose would necessarily infringe our patents, the license grant above includes a license under our patents. If you make a claim against any party that the Software infringes or contributes to the infringement of any patent, then your patent license to the Software ends immediately.
+
+### Redistribution
+
+The Terms and Conditions apply to all copies, modifications and derivatives of the Software.
+If you redistribute any copies, modifications or derivatives of the Software, you must include a copy of or a link to these Terms and Conditions and not remove any copyright notices provided in or with the Software.
+
+### Disclaimer
+
+THE SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE OR NON-INFRINGEMENT.
+IN NO EVENT WILL WE HAVE ANY LIABILITY TO YOU ARISING OUT OF OR RELATED TO THE SOFTWARE, INCLUDING INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF WE HAVE BEEN INFORMED OF THEIR POSSIBILITY IN ADVANCE.
+
+### Trademarks
+
+Except for displaying the License Details and identifying us as the origin of the Software, you have no right under these Terms and Conditions to use our trademarks, trade names, service marks or product names.
+
+## Grant of Future License
+
+We hereby irrevocably grant you an additional license to use the Software under the Apache License, Version 2.0 that is effective on the second anniversary of the date we make the Software available. On or after that date, you may use the Software under the Apache License, Version 2.0, in which case the following will apply:
+
+Licensed 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.

libs/lib-postgres/README.md

@@ -0,0 +1,3 @@
+# PowerSync Service Postgres
+
+Library for common Postgres logic used in the PowerSync service.

libs/lib-postgres/package.json

@@ -0,0 +1,43 @@
+{
+  "name": "@powersync/lib-service-postgres",
+  "repository": "https://github.com/powersync-ja/powersync-service",
+  "types": "dist/index.d.ts",
+  "version": "0.0.0",
+  "main": "dist/index.js",
+  "license": "FSL-1.1-Apache-2.0",
+  "type": "module",
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "build": "tsc -b",
+    "build:tests": "tsc -b test/tsconfig.json",
+    "clean": "rm -rf ./dist && tsc -b --clean",
+    "test": "vitest"
+  },
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "require": "./dist/index.js",
+      "default": "./dist/index.js"
+    },
+    "./types": {
+      "import": "./dist/types/types.js",
+      "require": "./dist/types/types.js",
+      "default": "./dist/types/types.js"
+    }
+  },
+  "dependencies": {
+    "@powersync/lib-services-framework": "workspace:*",
+    "@powersync/service-jpgwire": "workspace:*",
+    "@powersync/service-sync-rules": "workspace:*",
+    "@powersync/service-types": "workspace:*",
+    "p-defer": "^4.0.1",
+    "ts-codec": "^1.3.0",
+    "uri-js": "^4.4.1",
+    "uuid": "^9.0.1"
+  },
+  "devDependencies": {
+    "@types/uuid": "^9.0.4"
+  }
+}

libs/lib-postgres/src/db/connection/AbstractPostgresConnection.ts

@@ -0,0 +1,109 @@
+import * as framework from '@powersync/lib-services-framework';
+import * as pgwire from '@powersync/service-jpgwire';
+import * as t from 'ts-codec';
+
+export type DecodedSQLQueryExecutor<T extends t.Codec<any, any>> = {
+  first: () => Promise<t.Decoded<T> | null>;
+  rows: () => Promise<t.Decoded<T>[]>;
+};
+
+export abstract class AbstractPostgresConnection<
+  Listener extends framework.DisposableListener = framework.DisposableListener
+> extends framework.DisposableObserver<Listener> {
+  protected abstract baseConnection: pgwire.PgClient;
+
+  stream(...args: pgwire.Statement[]): AsyncIterableIterator<pgwire.PgChunk> {
+    return this.baseConnection.stream(...args);
+  }
+
+  query(script: string, options?: pgwire.PgSimpleQueryOptions): Promise<pgwire.PgResult>;
+  query(...args: pgwire.Statement[]): Promise<pgwire.PgResult>;
+  query(...args: any[]): Promise<pgwire.PgResult> {
+    return this.baseConnection.query(...args);
+  }
+
+  /**
+   * Template string helper which can be used to execute template SQL strings.
+   */
+  sql(strings: TemplateStringsArray, ...params: pgwire.StatementParam[]) {
+    const { statement, params: queryParams } = sql(strings, ...params);
+
+    const rows = <T>(): Promise<T[]> =>
+      this.queryRows({
+        statement,
+        params: queryParams
+      });
+
+    const first = async <T>(): Promise<T | null> => {
+      const [f] = await rows<T>();
+      return f;
+    };
+
+    return {
+      execute: () =>
+        this.query({
+          statement,
+          params
+        }),
+      rows,
+      first,
+      decoded: <T extends t.Codec<any, any>>(codec: T): DecodedSQLQueryExecutor<T> => {
+        return {
+          first: async () => {
+            const result = await first();
+            return result && codec.decode(result);
+          },
+          rows: async () => {
+            const results = await rows();
+            return results.map((r) => {
+              return codec.decode(r);
+            });
+          }
+        };
+      }
+    };
+  }
+
+  queryRows<T>(script: string, options?: pgwire.PgSimpleQueryOptions): Promise<T[]>;
+  queryRows<T>(...args: pgwire.Statement[] | [...pgwire.Statement[], pgwire.PgExtendedQueryOptions]): Promise<T[]>;
+  async queryRows(...args: any[]) {
+    return pgwire.pgwireRows(await this.query(...args));
+  }
+
+  async *streamRows<T>(...args: pgwire.Statement[]): AsyncIterableIterator<T[]> {
+    let columns: Array<keyof T> = [];
+
+    for await (const chunk of this.stream(...args)) {
+      if (chunk.tag == 'RowDescription') {
+        columns = chunk.payload.map((c, index) => {
+          return c.name as keyof T;
+        });
+        continue;
+      }
+
+      if (!chunk.rows.length) {
+        continue;
+      }
+
+      yield chunk.rows.map((row) => {
+        let q: Partial<T> = {};
+        for (const [index, c] of columns.entries()) {
+          q[c] = row[index];
+        }
+        return q as T;
+      });
+    }
+  }
+}
+
+/**
+ * Template string helper function which generates PGWire statements.
+ */
+export const sql = (strings: TemplateStringsArray, ...params: pgwire.StatementParam[]): pgwire.Statement => {
+  const paramPlaceholders = new Array(params.length).fill('').map((value, index) => `$${index + 1}`);
+  const joinedQueryStatement = strings.map((query, index) => `${query} ${paramPlaceholders[index] ?? ''}`).join(' ');
+  return {
+    statement: joinedQueryStatement,
+    params
+  };
+};