chore: support TPCC benchmark

benchmarks/tpcc/.gitignore

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+tpcc-log.log
+tpcc-log.log*.gz
+

benchmarks/tpcc/README.md

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+# TPC-C Benchmark Application for PGAdapter and Cloud Spanner
+
+This application implements the standard TPC-C benchmark and runs it against PGAdapter and a Cloud
+Spanner database. It is a Java Spring Boot application. See [src/main/resources/application.properties](src/main/resources/application.properties)
+for a full list of configuration options.
+
+## Running
+
+The application automatically starts PGAdapter together with the benchmark application. Supply the
+Cloud Spanner database and your credentials using the below command. The `tpcc.benchmark-threads`
+argument determines the number of threads that will execute test transactions in parallel.
+
+```shell
+mvn spring-boot:run -Dspring-boot.run.arguments="
+   --tpcc.benchmark-threads=8
+   --spanner.project=my-project
+   --spanner.instance=my-instance
+   --spanner.database=my-database
+   --pgadapter.credentials=/path/to/credentials.json
+   "
+```
+
+### Load data
+
+```shell
+mvn spring-boot:run -Dspring-boot.run.arguments="
+  --tpcc.benchmark-duration=PT600s
+  --tpcc.warehouses=10
+  --tpcc.benchmark-threads=1
+  --tpcc.load-data=true
+  --tpcc.truncate-before-load=false
+  --tpcc.run-benchmark=false
+  --tpcc.use-read-only-transactions=false
+  --tpcc.lock-scanned-ranges=false
+  --spanner.project=appdev-soda-spanner-staging
+  --spanner.instance=knut-test-ycsb
+  --spanner.database=tpcc2
+  --pgadapter.credentials=/home/loite/appdev-soda-spanner-staging.json
+  --pgadapter.disable-internal-retries=false
+  "
+```
+
+### Run benchmark
+
+Currently, we support two options of benchmark runners: `pgadapter` and `spanner_jdbc`.
+
+Run with the default benchmark runner (PGAdapter with PG JDBC):
+
+```shell
+mvn spring-boot:run -Dspring-boot.run.arguments="
+  --tpcc.benchmark-duration=PT600s
+  --tpcc.warehouses=10
+  --tpcc.benchmark-threads=1
+  --tpcc.load-data=false
+  --tpcc.truncate-before-load=false
+  --tpcc.run-benchmark=true
+  --tpcc.benchmark-runner=pgadapter
+  --tpcc.use-read-only-transactions=true
+  --tpcc.lock-scanned-ranges=false
+  --spanner.project=appdev-soda-spanner-staging
+  --spanner.instance=knut-test-ycsb
+  --spanner.database=tpcc2
+  --pgadapter.credentials=/home/loite/appdev-soda-spanner-staging.json
+  --pgadapter.disable-internal-retries=true
+  "
+```
+
+Run with the benchmark runner (Spanner JDBC):
+
+```shell
+mvn spring-boot:run -Dspring-boot.run.arguments="
+  --tpcc.benchmark-duration=PT600s
+  --tpcc.warehouses=10
+  --tpcc.benchmark-threads=1
+  --tpcc.load-data=false
+  --tpcc.truncate-before-load=false
+  --tpcc.run-benchmark=true
+  --tpcc.benchmark-runner=spanner_jdbc
+  --tpcc.use-read-only-transactions=true
+  --tpcc.lock-scanned-ranges=false
+  --spanner.project=appdev-soda-spanner-staging
+  --spanner.instance=knut-test-ycsb
+  --spanner.database=tpcc2
+  --pgadapter.credentials=/home/loite/appdev-soda-spanner-staging.json
+  --pgadapter.disable-internal-retries=true
+  "
+```

benchmarks/tpcc/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-parent</artifactId>
+    <version>3.1.5</version>
+    <relativePath/> <!-- lookup parent from repository -->
+  </parent>
+  <groupId>com.google.cloud.spanner</groupId>
+  <artifactId>pgadapter-tpcc-benchmark</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <name>PGAdapter tpcc benchmark</name>
+  <description>tpcc Benchmark Runner for PGAdapter</description>
+  <properties>
+    <java.version>17</java.version>
+  </properties>
+    <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>libraries-bom</artifactId>
+        <version>26.38.0</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+      <dependency>
+        <groupId>io.opentelemetry</groupId>
+        <artifactId>opentelemetry-bom</artifactId>
+        <version>1.37.0</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+    <!-- Add the PostgreSQL JDBC driver -->
+    <dependency>
+      <groupId>org.postgresql</groupId>
+      <artifactId>postgresql</artifactId>
+      <version>42.6.0</version>
+    </dependency>
+    <!-- Add the Cloud Spanner JDBC driver -->
+    <dependency>
+      <groupId>com.google.cloud</groupId>
+      <artifactId>google-cloud-spanner-jdbc</artifactId>
+      <version>2.17.0</version>
+    </dependency>
+    <!-- Add PGAdapter as a dependency, so we can start it in-process -->
+    <dependency>
+      <groupId>com.google.cloud</groupId>
+      <artifactId>google-cloud-spanner-pgadapter</artifactId>
+      <version>0.33.1-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+          <groupId>io.opentelemetry</groupId>
+          <artifactId>opentelemetry-sdk</artifactId>
+          <version>1.35.0</version>
+    </dependency>
+    <dependency>
+          <groupId>io.opentelemetry</groupId>
+          <artifactId>opentelemetry-sdk-metrics</artifactId>
+          <version>1.35.0</version>
+    </dependency>
+    <dependency>
+        <groupId>io.opentelemetry</groupId>
+        <artifactId>opentelemetry-exporter-otlp</artifactId>
+        <version>1.35.0</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>com.spotify.fmt</groupId>
+        <artifactId>fmt-maven-plugin</artifactId>
+        <version>2.21.1</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>format</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>