Add tests for different Postgres client libraries (#2008)

* Add tests for different postgres clients
* test/fixtures: sanitize test name for test_output_dir
* test/fixtures: do not look for etcd before runtime
* Add workflow for testing Postgres client libraries

test_runner/fixtures/neon_fixtures.py

@@ -1925,9 +1925,12 @@ class Etcd:
     datadir: str
     port: int
     peer_port: int
-    binary_path: Path = etcd_path()
+    binary_path: Path = field(init=False)
     handle: Optional[subprocess.Popen[Any]] = None  # handle of running daemon
 
+    def __post_init__(self):
+        self.binary_path = etcd_path()
+
     def client_url(self):
         return f'http://127.0.0.1:{self.port}'
 
@@ -1984,7 +1987,7 @@ class Etcd:
 def get_test_output_dir(request: Any) -> pathlib.Path:
     """ Compute the working directory for an individual test. """
     test_name = request.node.name
-    test_dir = pathlib.Path(top_output_dir) / test_name
+    test_dir = pathlib.Path(top_output_dir) / test_name.replace("/", "-")
     log.info(f'get_test_output_dir is {test_dir}')
     # make mypy happy
     assert isinstance(test_dir, pathlib.Path)

test_runner/pg_clients/csharp/npgsql/.dockerignore

@@ -0,0 +1,2 @@
+bin/
+obj/

test_runner/pg_clients/csharp/npgsql/.gitignore

@@ -0,0 +1,2 @@
+bin/
+obj/

test_runner/pg_clients/csharp/npgsql/Dockerfile

@@ -0,0 +1,14 @@
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+WORKDIR /source
+
+COPY *.csproj .
+RUN dotnet restore
+
+COPY . .
+RUN dotnet publish -c release -o /app --no-restore
+
+FROM mcr.microsoft.com/dotnet/runtime:6.0
+WORKDIR /app
+COPY --from=build /app .
+
+ENTRYPOINT ["dotnet", "csharp-npgsql.dll"]

test_runner/pg_clients/csharp/npgsql/Program.cs

@@ -0,0 +1,19 @@
+using Npgsql;
+
+var host = Environment.GetEnvironmentVariable("NEON_HOST");
+var database = Environment.GetEnvironmentVariable("NEON_DATABASE");
+var user = Environment.GetEnvironmentVariable("NEON_USER");
+var password = Environment.GetEnvironmentVariable("NEON_PASSWORD");
+
+var connString = $"Host={host};Username={user};Password={password};Database={database}";
+
+await using var conn = new NpgsqlConnection(connString);
+await conn.OpenAsync();
+
+await using (var cmd = new NpgsqlCommand("SELECT 1", conn))
+await using (var reader = await cmd.ExecuteReaderAsync())
+{
+    while (await reader.ReadAsync())
+        Console.WriteLine(reader.GetInt32(0));
+}
+await conn.CloseAsync();

test_runner/pg_clients/csharp/npgsql/csharp-npgsql.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Npgsql" Version="6.0.5" />
+  </ItemGroup>
+
+</Project>

test_runner/pg_clients/java/jdbc/.gitignore

@@ -0,0 +1 @@
+

test_runner/pg_clients/java/jdbc/Dockerfile

@@ -0,0 +1,10 @@
+FROM openjdk:17
+WORKDIR /source
+
+COPY . .
+
+WORKDIR /app
+RUN curl --output postgresql.jar https://jdbc.postgresql.org/download/postgresql-42.4.0.jar && \
+    javac -d /app /source/Example.java
+
+CMD ["java", "-cp", "/app/postgresql.jar:.", "Example"]

test_runner/pg_clients/java/jdbc/Example.java

@@ -0,0 +1,31 @@
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.Properties;
+
+public class Example
+{
+    public static void main( String[] args ) throws Exception
+    {
+        String host = System.getenv("NEON_HOST");
+        String database = System.getenv("NEON_DATABASE");
+        String user = System.getenv("NEON_USER");
+        String password = System.getenv("NEON_PASSWORD");
+
+        String url = "jdbc:postgresql://%s/%s".formatted(host, database);
+        Properties props = new Properties();
+        props.setProperty("user", user);
+        props.setProperty("password", password);
+
+        Connection conn = DriverManager.getConnection(url, props);
+        Statement st = conn.createStatement();
+        ResultSet rs = st.executeQuery("SELECT 1");
+        while (rs.next())
+        {
+            System.out.println(rs.getString(1));
+        }
+        rs.close();
+        st.close();
+    }
+}

test_runner/pg_clients/python/asyncpg/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.10
+WORKDIR /source
+
+COPY . .
+
+RUN python3 -m pip install --no-cache-dir -r requirements.txt
+
+CMD ["python3", "asyncpg_example.py"]

test_runner/pg_clients/python/asyncpg/asyncpg_example.py

@@ -0,0 +1,30 @@
+#! /usr/bin/env python3
+
+import asyncio
+import os
+
+import asyncpg
+
+
+async def run(**kwargs) -> asyncpg.Record:
+    conn = await asyncpg.connect(
+        **kwargs,
+        statement_cache_size=0,  # Prepared statements doesn't work pgbouncer
+    )
+    rv = await conn.fetchrow("SELECT 1")
+    await conn.close()
+
+    return rv
+
+
+if __name__ == "__main__":
+    kwargs = {
+        k.lstrip("NEON_").lower(): v
+        for k in ("NEON_HOST", "NEON_DATABASE", "NEON_USER", "NEON_PASSWORD")
+        if (v := os.environ.get(k, None)) is not None
+    }
+
+    loop = asyncio.new_event_loop()
+    row = loop.run_until_complete(run(**kwargs))
+
+    print(row[0])

test_runner/pg_clients/python/asyncpg/requirements.txt

@@ -0,0 +1 @@
+asyncpg==0.25.0

test_runner/pg_clients/python/pg8000/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.10
+WORKDIR /source
+
+COPY . .
+
+RUN python3 -m pip install --no-cache-dir -r requirements.txt
+
+CMD ["python3", "pg8000_example.py"]

test_runner/pg_clients/python/pg8000/pg8000_example.py

@@ -0,0 +1,23 @@
+#! /usr/bin/env python3
+
+import os
+import ssl
+
+import pg8000.dbapi
+
+if __name__ == "__main__":
+    kwargs = {
+        k.lstrip("NEON_").lower(): v
+        for k in ("NEON_HOST", "NEON_DATABASE", "NEON_USER", "NEON_PASSWORD")
+        if (v := os.environ.get(k, None)) is not None
+    }
+    conn = pg8000.dbapi.connect(
+        **kwargs,
+        ssl_context=True,
+    )
+
+    cursor = conn.cursor()
+    cursor.execute("SELECT 1")
+    row = cursor.fetchone()
+    print(row[0])
+    conn.close()

test_runner/pg_clients/python/pg8000/requirements.txt

@@ -0,0 +1 @@
+pg8000==1.29.1

test_runner/pg_clients/swift/PostgresClientKitExample/.dockerignore

@@ -0,0 +1 @@
+.build/

test_runner/pg_clients/swift/PostgresClientKitExample/.gitignore

@@ -0,0 +1 @@
+.build/

test_runner/pg_clients/swift/PostgresClientKitExample/Dockerfile

@@ -0,0 +1,11 @@
+FROM swift:5.6 AS build
+RUN apt-get -q update && apt-get -q install -y libssl-dev
+WORKDIR /source
+
+COPY . .
+RUN swift build --configuration release
+
+FROM swift:5.6
+WORKDIR /app
+COPY --from=build /source/.build/release/release .
+CMD ["/app/PostgresClientKitExample"]

test_runner/pg_clients/swift/PostgresClientKitExample/Package.resolved

@@ -0,0 +1,41 @@
+{
+  "pins" : [
+    {
+      "identity" : "bluesocket",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/IBM-Swift/BlueSocket.git",
+      "state" : {
+        "revision" : "dd924c3bc2c1c144c42b8dda3896f1a03115ded4",
+        "version" : "2.0.2"
+      }
+    },
+    {
+      "identity" : "bluesslservice",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/IBM-Swift/BlueSSLService",
+      "state" : {
+        "revision" : "c249988fb748749739144e7f554710552acdc0bd",
+        "version" : "2.0.1"
+      }
+    },
+    {
+      "identity" : "postgresclientkit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/codewinsdotcom/PostgresClientKit.git",
+      "state" : {
+        "branch" : "v1.4.3",
+        "revision" : "beafedaea6dc9f04712e9a8547b77f47c406a47e"
+      }
+    },
+    {
+      "identity" : "swift-argument-parser",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-argument-parser",
+      "state" : {
+        "revision" : "6b2aa2748a7881eebb9f84fb10c01293e15b52ca",
+        "version" : "0.5.0"
+      }
+    }
+  ],
+  "version" : 2
+}

test_runner/pg_clients/swift/PostgresClientKitExample/Package.swift

@@ -0,0 +1,17 @@
+// swift-tools-version:5.6
+import PackageDescription
+
+let package = Package(
+    name: "PostgresClientKitExample",
+    dependencies: [
+        .package(
+            url: "https://github.com/codewinsdotcom/PostgresClientKit.git",
+            revision: "v1.4.3"
+        )
+    ],
+    targets: [
+        .target(
+            name: "PostgresClientKitExample",
+            dependencies: [ "PostgresClientKit" ])
+    ]
+)

test_runner/pg_clients/swift/PostgresClientKitExample/Sources/PostgresClientKitExample/main.swift

@@ -0,0 +1,38 @@
+import Foundation
+
+import PostgresClientKit
+
+do {
+    var configuration = PostgresClientKit.ConnectionConfiguration()
+
+    let env = ProcessInfo.processInfo.environment
+    if let host = env["NEON_HOST"] {
+        configuration.host = host
+    }
+    if let database = env["NEON_DATABASE"] {
+        configuration.database = database
+    }
+    if let user = env["NEON_USER"] {
+        configuration.user = user
+    }
+    if let password = env["NEON_PASSWORD"] {
+        configuration.credential = .scramSHA256(password: password)
+    }
+
+    let connection = try PostgresClientKit.Connection(configuration: configuration)
+    defer { connection.close() }
+
+    let text = "SELECT 1;"
+    let statement = try connection.prepareStatement(text: text)
+    defer { statement.close() }
+
+    let cursor = try statement.execute(parameterValues: [ ])
+    defer { cursor.close() }
+
+    for row in cursor {
+        let columns = try row.get().columns
+        print(columns[0])
+    }
+} catch {
+    print(error)
+}

test_runner/pg_clients/test_pg_clients.py

@@ -0,0 +1,54 @@
+import os
+import shutil
+import subprocess
+from pathlib import Path
+from tempfile import NamedTemporaryFile
+from urllib.parse import urlparse
+
+import pytest
+from fixtures.neon_fixtures import RemotePostgres
+
+
+@pytest.mark.remote_cluster
+@pytest.mark.parametrize(
+    "client",
+    [
+        "csharp/npgsql",
+        "java/jdbc",
+        "python/asyncpg",
+        pytest.param(
+            "python/pg8000",  # See https://github.com/neondatabase/neon/pull/2008#discussion_r912264281
+            marks=pytest.mark.xfail(reason="Handles SSL in incompatible with Neon way")),
+        pytest.param(
+            "swift/PostgresClientKit",  # See https://github.com/neondatabase/neon/pull/2008#discussion_r911896592
+            marks=pytest.mark.xfail(reason="Neither SNI nor parameters is supported")),
+        "typescript/postgresql-client",
+    ],
+)
+def test_pg_clients(remote_pg: RemotePostgres, client: str):
+    conn_options = remote_pg.conn_options()
+
+    env_file = None
+    with NamedTemporaryFile(mode="w", delete=False) as f:
+        env_file = f.name
+        f.write(f"""
+            NEON_HOST={conn_options["host"]}
+            NEON_DATABASE={conn_options["dbname"]}
+            NEON_USER={conn_options["user"]}
+            NEON_PASSWORD={conn_options["password"]}
+        """)
+
+    image_tag = client.lower()
+    docker_bin = shutil.which("docker")
+    if docker_bin is None:
+        raise RuntimeError("docker is required for running this test")
+
+    build_cmd = [
+        docker_bin, "build", "--quiet", "--tag", image_tag, f"{Path(__file__).parent / client}"
+    ]
+    run_cmd = [docker_bin, "run", "--rm", "--env-file", env_file, image_tag]
+
+    subprocess.run(build_cmd, check=True)
+    result = subprocess.run(run_cmd, check=True, capture_output=True, text=True)
+
+    assert result.stdout.strip() == "1"

test_runner/pg_clients/typescript/postgresql-client/.dockerignore

@@ -0,0 +1 @@
+node_modules/

test_runner/pg_clients/typescript/postgresql-client/.gitignore

@@ -0,0 +1 @@
+node_modules/

test_runner/pg_clients/typescript/postgresql-client/Dockerfile

@@ -0,0 +1,7 @@
+FROM node:16
+WORKDIR /source
+
+COPY . .
+RUN npm clean-install
+
+CMD ["/source/index.js"]

test_runner/pg_clients/typescript/postgresql-client/index.js

@@ -0,0 +1,25 @@
+#! /usr/bin/env node
+
+import {Connection} from 'postgresql-client';
+
+const params = {
+    "host": process.env.NEON_HOST,
+    "database": process.env.NEON_DATABASE,
+    "user": process.env.NEON_USER,
+    "password": process.env.NEON_PASSWORD,
+    "ssl": true,
+}
+for (const key in params) {
+    if (params[key] === undefined) {
+        delete params[key];
+    }
+}
+
+const connection = new Connection(params);
+await connection.connect();
+const result = await connection.query(
+    'select 1'
+);
+const rows = result.rows;
+await connection.close();
+console.log(rows[0][0]);

test_runner/pg_clients/typescript/postgresql-client/package-lock.json

@@ -0,0 +1,262 @@
+{
+  "name": "typescript",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "postgresql-client": "^2.1.3"
+      }
+    },
+    "node_modules/debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/doublylinked": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/doublylinked/-/doublylinked-2.5.1.tgz",
+      "integrity": "sha512-Lpqb+qyHpR5Bew8xfKsxVYdjXEYAQ7HLp1IX47kHKmVCZeXErInytonjkL+kE+L4yaKSYEmDNR9MJYr5zwuAKA==",
+      "engines": {
+        "node": ">= 10.0"
+      }
+    },
+    "node_modules/lightning-pool": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/lightning-pool/-/lightning-pool-3.1.3.tgz",
+      "integrity": "sha512-OgWuoh0BBrikWx/mc/XwIKwC9HHTe/GU3XODLMBPibv7jv8u0o2gQFS7KVEg5U8Oufg6N7mkm8Y1RoiLER0zeQ==",
+      "dependencies": {
+        "doublylinked": "^2.4.3",
+        "putil-promisify": "^1.8.2"
+      },
+      "engines": {
+        "node": ">= 10.0"
+      }
+    },
+    "node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
+    "node_modules/obuf": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/obuf/-/obuf-1.1.2.tgz",
+      "integrity": "sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg=="
+    },
+    "node_modules/postgres-bytea": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-3.0.0.tgz",
+      "integrity": "sha512-CNd4jim9RFPkObHSjVHlVrxoVQXz7quwNFpz7RY1okNNme49+sVyiTvTRobiLV548Hx/hb1BG+iE7h9493WzFw==",
+      "dependencies": {
+        "obuf": "~1.1.2"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/postgresql-client": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/postgresql-client/-/postgresql-client-2.1.3.tgz",
+      "integrity": "sha512-36Ga6JzhydsRzcCRcA/Y2hrX9C9sI0wS6sgRNBlOGkOwACXQVybmhDM7mAUbi9cT00N39Ee7btR0eMCyD//5Xg==",
+      "dependencies": {
+        "debug": "^4.3.4",
+        "doublylinked": "^2.5.1",
+        "lightning-pool": "^3.1.3",
+        "postgres-bytea": "^3.0.0",
+        "power-tasks": "^0.8.0",
+        "putil-merge": "^3.8.0",
+        "putil-promisify": "^1.8.5",
+        "putil-varhelpers": "^1.6.4"
+      },
+      "engines": {
+        "node": ">=14.0",
+        "npm": ">=7.0.0"
+      }
+    },
+    "node_modules/power-tasks": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/power-tasks/-/power-tasks-0.8.0.tgz",
+      "integrity": "sha512-HhMcx+y5UkzlEmKslruz8uAU2Yq8CODJsFEMFsYMrGp5EzKpkNHGu0RNvBqyewKJDZHPNKtBSULsEAxMqQIBVQ==",
+      "dependencies": {
+        "debug": "^4.3.4",
+        "doublylinked": "^2.5.1",
+        "strict-typed-events": "^2.2.0"
+      },
+      "engines": {
+        "node": ">=14.0",
+        "npm": ">=7.0.0"
+      }
+    },
+    "node_modules/putil-merge": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/putil-merge/-/putil-merge-3.8.0.tgz",
+      "integrity": "sha512-5tXPafJawWFoYZWLhkYXZ7IC/qkI45HgJsgv36lJBeq3qjFZfUITZE01CmWUBIlIn9f1yDiikqgYERARhVmgrg==",
+      "engines": {
+        "node": ">= 10.0"
+      }
+    },
+    "node_modules/putil-promisify": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/putil-promisify/-/putil-promisify-1.8.5.tgz",
+      "integrity": "sha512-DItclasWWZokvpq3Aiaq0iV7WC8isP/0o/8mhC0yV6CQ781N/7NQHA1VyOm6hfpeFEwIQoo1C4Yjc5eH0q6Jbw==",
+      "engines": {
+        "node": ">= 6.0"
+      }
+    },
+    "node_modules/putil-varhelpers": {
+      "version": "1.6.4",
+      "resolved": "https://registry.npmjs.org/putil-varhelpers/-/putil-varhelpers-1.6.4.tgz",
+      "integrity": "sha512-nM2nO1HS2yJUyPgz0grd2XZAM0Spr6/tt6F4xXeNDjByV00BV2mq6lZ+sDff8WIfQBI9Hn1Czh93H1xBvKESxw==",
+      "engines": {
+        "node": ">= 6.0"
+      }
+    },
+    "node_modules/strict-typed-events": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/strict-typed-events/-/strict-typed-events-2.2.0.tgz",
+      "integrity": "sha512-yvHRtEfRRV7TJWi9cLhMt4Mb12JtAwXXONltUlLCA3fRB0LRy94B4E4e2gIlXzT5nZHTZVpOjJNOshri3LZ5bw==",
+      "dependencies": {
+        "putil-promisify": "^1.8.5",
+        "ts-gems": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=14.0"
+      }
+    },
+    "node_modules/ts-gems": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/ts-gems/-/ts-gems-2.1.0.tgz",
+      "integrity": "sha512-5IqiG4nq1tsOhYPc4CwxA6bsE+TfU6uAABzf6bH4sdElgXpt/mlStvIYedvvtU7BM1+RRJxCaTLaaVFcCqNaiA==",
+      "peerDependencies": {
+        "typescript": ">=4.0.0"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "4.7.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
+      "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
+      "peer": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=4.2.0"
+      }
+    }
+  },
+  "dependencies": {
+    "debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "requires": {
+        "ms": "2.1.2"
+      }
+    },
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+}

test_runner/pg_clients/typescript/postgresql-client/package.json

@@ -0,0 +1,6 @@
+{
+  "type": "module",
+  "dependencies": {
+    "postgresql-client": "^2.1.3"
+  }
+}