Unable to create synchronous gauge using instrument API

[tongshushan]

Describe the bug
Hello,
refer to: #5506 (comment) ,I want to create synchronous gauge using instrument API, but get error:
java.lang.ClassCastException: io.opentelemetry.sdk.metrics.SdkDoubleGauge$SdkDoubleGaugeBuilder cannot be cast to io.opentelemetry.extension.incubator.metrics.ExtendedDoubleGaugeBuilder

Steps to reproduce

code:

import io.opentelemetry.api.OpenTelemetry;
import io.opentelemetry.api.metrics.Meter;
import io.opentelemetry.extension.incubator.metrics.DoubleGauge;
import io.opentelemetry.extension.incubator.metrics.ExtendedDoubleGaugeBuilder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@Slf4j
@RestController
public class OtlpTestController {
    @Autowired
    OpenTelemetry openTelemetry;

    @GetMapping("/testSendSynchronizedGauge")
    public String testSendSynchronizedGauge() {
        Meter meter = openTelemetry.meterBuilder("instrumentation-library-name")
                .setInstrumentationVersion("1.0.0")
                .build();
        DoubleGauge gauge = ((ExtendedDoubleGaugeBuilder) meter.gaugeBuilder("my-gauge")).build();
        gauge.set(1.0);
        return "ok";
    }
}

pom.xml:

     <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.12.RELEASE</version>
        <relativePath/> 
    </parent>

 <dependencyManagement>
     <dependencies>
        <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>io.opentelemetry</groupId>
            <artifactId>opentelemetry-api</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-sdk</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-sdk-metrics</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-exporter-logging</artifactId>
        </dependency>
        <dependency>
            <!-- Not managed by opentelemetry-bom -->
            <groupId>io.opentelemetry.semconv</groupId>
            <artifactId>opentelemetry-semconv</artifactId>
            <version>1.23.1-alpha</version>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-sdk-extension-autoconfigure</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-sdk-extension-autoconfigure-spi</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-exporter-otlp</artifactId>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-extension-incubator</artifactId>
            <version>1.36.0-alpha</version>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry.instrumentation</groupId>
            <artifactId>opentelemetry-instrumentation-api-semconv</artifactId>
            <version>1.29.0-alpha</version>
        </dependency>
        <dependency>
            <groupId>io.opentelemetry.instrumentation</groupId>
            <artifactId>opentelemetry-logback-appender-1.0</artifactId>
            <version>1.29.0-alpha</version>
        </dependency>
      </dependencies>

What did you expect to see?
Call the test method: testSendSynchronizedGauge() should send synchronous gauge.

What did you see instead?
java.lang.ClassCastException: io.opentelemetry.sdk.metrics.SdkDoubleGauge$SdkDoubleGaugeBuilder cannot be cast to io.opentelemetry.extension.incubator.metrics.ExtendedDoubleGaugeBuilder

Environment
OS: "Win11"
java version: "1.8.0_121"
springboot: 2.3.12.RELEASE

[jack-berg]

Can you check the version of all your dependencies? I noticed you using spring, which we've seen is quite stubborn about the versions of opentelemetry artifacts it brings in. I suspect that you successfully upgraded some artifact versions, but not all, and opentelemetry-java artifacts all need to be kept in sync at the same version.

See this #6018 (comment) for a few different ways people have found to override the version from spring dependency management.

[tongshushan]

Hi @jack-berg :

<dependencyManagement>
    <dependencies>
        <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>io.opentelemetry</groupId>
            <artifactId>opentelemetry-extension-incubator</artifactId>
            <version>1.36.0-alpha</version>
    </dependency>
</dependencies>

The latest opentelemetry-extension-incubator lib on Maven Repository is: 1.36.0-alpha
I degrade the opentelemetry-bom from 1.37.0 to 1.36.0, then it's working.

Thank for help.

[trask]

hi @tongshushan, opentelemetry-extension-incubator was renamed to opentelemetry-api-incubator in 1.37.0, I think making that change should get it working in 1.37.0 for you

[tongshushan]

Hi @trask , your suggestion is also working, thanks.

opentelemetry-api-incubator on maven repositry is 1.37.0-alpha https://mvnrepository.com/artifact/io.opentelemetry/opentelemetry-api-incubator