Can not Create a Cloud Pub/Sub subscription

[Rohit Nigam]

Hi 

I am not able to create  a subscription and assign push end point url  given  the topic name  and end point  url. I keep getting this error...

<p>The requested URL <code>/v1/projects%2Fproject-name%2Fsubscriptions%2Ftest_sub</code> was not found on this server. <ins>That’s all we know.</ins>\n"

The code which gets the Pubsub object is

public static Pubsub createPubsubClient(HttpTransport httpTransport,
                                        JsonFactory jsonFactory) throws IOException {

    LOG.info("Entered createPubsubClient");
    Preconditions.checkNotNull(httpTransport);
    Preconditions.checkNotNull(jsonFactory);
    GoogleCredential credential = GoogleCredential.getApplicationDefault();
    // In some cases, you need to add the scope explicitly.
    if (credential.createScopedRequired()) {
        credential = credential.createScoped(PubsubScopes.all());
    }
    LOG.info("Got the credentials createPubsubClient");
    // Please use custom HttpRequestInitializer for automatic
    // retry upon failures.  We provide a simple reference
    // implementation in the "Retry Handling" section.
    HttpRequestInitializer initializer =
            new RetryHttpInitializerWrapper(credential);
    return new Pubsub.Builder(httpTransport, jsonFactory, initializer).setApplicationName(APPLICATION_NAME)
            .build();
}

and the code which is creating the Subscriber is 

Pubsub pubsub = ServiceAccountConfiguration.createPubsubClient();

PushConfig pushConfig = new PushConfig()
        .setPushEndpoint(url);

Subscription subscription = new Subscription()
        .setTopic(topicName)
        .setPushConfig(pushConfig);
LOG.info("Creating  " + subscriberName + "rohit");
pubsub.projects().subscriptions()
        .create(subscriberName, subscription)
        .execute();

It fails when i call execute().


Any help would be appreciated.
Rohit

[Takashi Matsuo]

Hi Rohit,

How do you create the subscriberName? I suspect the subscriberName already contains the percent encoded slashes (%7F). What do your logs say?

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[Rohit Nigam]

Hi Takashi

The GAE logs shows the error which states the subscriber name 

<p>The requested URL <code>/v1/projects%2Fproject-name%2Fsubscriptions%2Ftest_sub</code> was not found on this server. <ins>That’s all we know.</ins>\n"

The %7F is there in the logs.

Rohit

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[Rohit Nigam]

Hi Takashi

The GAE logs shows the error which states the subscriber name 

<p>The requested URL <code>/v1/projects%2Fproject-name%2Fsubscriptions%2Ftest_sub</code> was not found on this server. <ins>That’s all we know.</ins>\n"

The %7F is there in the logs.

Rohit

[Takashi Matsuo]

Hi Rohit,

Sorry, I'm talking about the following log:

```

LOG.info("Creating  " + subscriberName + "rohit");

```

What does it say?

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[Rohit Nigam]

It says 

Creating projects/data-pond/subscriptions/test_subrohit

and then i see these errors

com.google.api.server.spi.SystemService invokeServiceMethod: exception occurred while calling backend method com.google.api.client.googleapis.json.GoogleJsonResponseException: 404 NOT_FOUND <!DOCTYPE html> <html lang=en> <meta charset=utf-8> <meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width"> <title>Error 404 (Not Found)!!1</title> <style> *{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px} </style> <a href=//www.google.com/><span id=logo aria-label=Google></span></a> <p><b>404.</b> <ins>That’s an error.</ins> <p>The requested URL <code>/v1/projects%2Fproject-name%2Fsubscriptions%2Ftest_sub</code> was not found on this server. <ins>That’s all we know.</ins> at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:145) at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113) at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40) at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:321) at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1045)

Not sure why it is not prepending this url https://pubsub.googleapis.com/ and trying to look in the same server.

Rohit

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[Takashi Matsuo]

Hi Rohit,

It's weird. Which version of the client library are you using? Can you share the reproducible code with me? I'll try to reproduce it. 

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[Rohit Nigam]

Hi Takashi

Here is my pom.xml

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>


    <groupId>com.x</groupId>
    <artifactId>x-webservices</artifactId>
    <version>1</version>
    <packaging>war</packaging>
    <name>x</name>
    <properties>
        <appengine.app.version>1</appengine.app.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <jersey.version>2.5.1</jersey.version>
        <guice.version>3.0</guice.version>
        <bigtable.version>0.2.2</bigtable.version>
        <alpn.jdk7.version>7.1.3.v20150130</alpn.jdk7.version>
        <alpn.jdk8.version>8.1.3.v20150130</alpn.jdk8.version>
        <hadoop.version>2.4.1</hadoop.version>
        <hbase.version>1.1.0</hbase.version>
    </properties>

    <prerequisites>
        <maven>3.1.0</maven>
    </prerequisites>

    <dependencies>
        <!-- Compile/runtime dependencies -->
        
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-oauth2</artifactId>
            <version>v2-rev75-1.19.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.api-client</groupId>
            <artifactId>google-api-client</artifactId>
            <version>1.21.0</version>
        </dependency>

        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client-jetty</artifactId>
            <version>1.21.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.http-client</groupId>
            <artifactId>google-http-client-appengine</artifactId>
            <version>1.16.0-rc</version>
        </dependency>
        <dependency>
            <groupId>com.google.http-client</groupId>
            <artifactId>google-http-client-jackson2</artifactId>
            <version>1.19.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-1.0-sdk</artifactId>
            <version>1.9.30</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-endpoints</artifactId>
            <version>1.9.30</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.inject</groupId>
            <artifactId>javax.inject</artifactId>
            <version>1</version>
        </dependency>
        <dependency>
            <groupId>javax.jdo</groupId>
            <artifactId>jdo-api</artifactId>
            <version>3.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.12.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.14</version>
        </dependency>

        <dependency>
            <groupId>javax.ws.rs</groupId>
            <artifactId>javax.ws.rs-api</artifactId>
            <version>2.0</version>
        </dependency>


        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>19.0-rc1</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.0</version>
        </dependency>

        <dependency>
            <groupId>com.google.inject</groupId>
            <artifactId>guice</artifactId>
            <version>${guice.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.inject.extensions</groupId>
            <artifactId>guice-servlet</artifactId>
            <version>${guice.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.inject.extensions</groupId>
            <artifactId>guice-assistedinject</artifactId>
            <version>${guice.version}</version>
        </dependency>

        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-storage</artifactId>
            <version>v1-rev58-1.21.0</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-common</artifactId>
            <version>2.4.1</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey.contribs</groupId>
            <artifactId>jersey-guice</artifactId>
            <version>1.9.1</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-cloudresourcemanager</artifactId>
            <version>v1beta1-rev10-1.21.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-cloudbilling</artifactId>
            <version>v1-rev5-1.21.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.cloud.bigtable</groupId>
            <artifactId>bigtable-hbase-1.1</artifactId>
            <version>0.2.3</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.jaxrs</groupId>
            <artifactId>jackson-jaxrs-json-provider</artifactId>
            <version>2.6.3</version>
        </dependency>

        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-pubsub</artifactId>
            <version>v1-rev8-1.18.0-rc</version>
        </dependency>

        <dependency>
            <groupId>com.google.appengine.tools</groupId>
            <artifactId>appengine-gcs-client</artifactId>
            <version>RELEASE</version>
        </dependency>



        <!--<dependency>-->
            <!--<groupId>com.google.gcloud</groupId>-->
            <!--<artifactId>gcloud-java-storage</artifactId>-->
            <!--<version>0.1.3</version>-->
        <!--</dependency>-->


        <!-- Test Dependencies -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.9.5</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-testing</artifactId>
            <version>1.9.30</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-stubs</artifactId>
            <version>1.9.30</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <profiles>
        <profile>
            <id>staged</id>
            <repositories>
                <repository>
                    <id>snapshots-repo</id>
                    <url>https://oss.sonatype.org/content/repositories/snapshots</url>
                    <releases><enabled>false</enabled></releases>
                    <snapshots><enabled>true</enabled></snapshots>
                </repository>
            </repositories>
        </profile>
        <profile>
            <id>mac</id>
            <properties>
                <tcnative.classifier>osx-x86_64</tcnative.classifier>
            </properties>
        </profile>
        <profile>
            <id>windows</id>
            <properties>
                <tcnative.classifier>windows-x86_64</tcnative.classifier>
            </properties>
        </profile>
        <profile>
            <id>jdk7</id>
            <activation>
                <jdk>1.7</jdk>
            </activation>
            <properties>
                <alpn.version>${alpn.jdk7.version}</alpn.version>
            </properties>
        </profile>
        <profile>
            <id>jdk8</id>
            <activation>
                <jdk>1.8</jdk>
            </activation>
            <properties>
                <alpn.version>${alpn.jdk8.version}</alpn.version>
            </properties>
        </profile>
    </profiles>

    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
        </resources>
        <!-- for hot reload of the web application-->
        <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
        <plugins>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.1.3.v20140225</version>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>versions-maven-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>display-dependency-updates</goal>
                            <goal>display-plugin-updates</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <version>3.1</version>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <webXml>${project.build.directory}/generated-sources/appengine-endpoints/WEB-INF/web.xml</webXml>
                    <webResources>
                        <resource>
                            <!-- this is relative to the pom.xml directory -->
                            <directory>${project.build.directory}/generated-sources/appengine-endpoints</directory>
                            <!-- the list has a default value of ** -->
                            <includes>
                                <include>WEB-INF/*.discovery</include>
                                <include>WEB-INF/*.api</include>
                            </includes>
                        </resource>
                    </webResources>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.google.appengine</groupId>
                <artifactId>appengine-maven-plugin</artifactId>
                <version>1.9.30</version>
                <configuration>
                    <enableJarClasses>false</enableJarClasses>
                    <!-- Comment in the below snippet to bind to all IPs instead of just localhost -->
                    <!-- address>0.0.0.0</address>
                    <port>8080</port -->
                    <!-- Comment in the below snippet to enable local debugging with a remove debugger
                         like those included with Eclipse or IntelliJ -->
                    <!-- jvmFlags>
                      <jvmFlag>-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n</jvmFlag>
                    </jvmFlags -->
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>endpoints_get_discovery_doc</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

Let me know if you see any thing fishy here and which is breaking it.

Rohit

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[Rohit Nigam]

            <groupId>com.google.inject.extensions</groupId<span st

[Alex Mordkovich]

There is no %7F anywhere in the logs (AFAICT) or in requests; there is only %2F, which is an encoded slash ('/'). Rohit, please explain or provide the code that is used to set the variable subscriberName. Are you sure it's not being modified concurrently by another thread?

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[Rohit Nigam]

I don't know where the %7F is coming from , i am using API explorer to send the request and i see this in GAE logs.

17:34:18.666

com.example.helloendpoints.Greetings registerEnpoint: Creating projects/x/subscriptions/test_sub

17:34:18.806

com.google.api.server.spi.SystemService invokeServiceMethod: exception occurred while calling backend method com.google.api.client.googleapis.json.GoogleJsonResponseException: 404 NOT_FOUND <!DOCTYPE html> <html lang=en> <meta charset=utf-8> <meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width"> <title>Error 404 (Not Found)!!1</title> <style> *{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px} </style> <a href=//www.google.com/><span id=logo aria-label=Google></span></a> <p><b>404.</b> <ins>That’s an error.</ins> <p>The requested URL <code>/v1/projects%2Fx%2Fsubscriptions%2Ftest_sub</code> was not found on this server. <ins>That’s all we know.</ins> at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:145) at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113) at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40) at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:321) at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1045)

Rohit

...

[Rohit Nigam]

Here is the code :--

private String getFullyQualifiedResourceName(ResourceType resourceType, String project, String resource) {
    return String.format("projects/%s/%s/%s", project.trim(), resourceType.collectionName, resource.trim());
}

Rohit

On Monday, February 29, 2016 at 5:18:12 PM UTC-8, Alex Mordkovich wrote:

...

[Takashi Matsuo]

Hi Rohit,

Yeah, my bad it's %2F (encoded slash).

Your original code doesn't include the call for getFullyQualifiedResourceName method you showed.

Where do you call getFullyQualifiedResourceName and how do you set the value of `subscriberName` variable?

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[rni...@slb.com]

Hi Takashi

This the code 

String subscriberName = getFullyQualifiedResourceName(
                    "subscriptions", projectName.trim(), topic.trim() + "_sub").trim();

            PushConfig pushConfig = new PushConfig().setPushEndpoint(url);

            Subscription subscription = new Subscription()

                    // The name of the topic from which this subscription
                    // receives messages
                    .setTopic(topicName)
                            //Acknowledgement deadline in second
                    .setAckDeadlineSeconds(60)
                            // Only needed if you are using push delivery
                    .setPushConfig(pushConfig);
            LOG.info("after getting subscription");
            LOG.info("Creating  " + subscriberName);
            LOG.info("base url " + pubsub.getBaseUrl() + " root url " + pubsub.getRootUrl());

            Subscription newSubscription = pubsub.projects().subscriptions().create(
                    subscriberName, subscription)
                    .execute();

...

[Nicholas Gelinas]

I too cannot yet reproduce exactly this issue with the code provided.

• What is the value of subscriberName right after invoking getFullyQualifiedResourceName? As String.format does not perform any URL encoding, this may be useful to determine when '/' becomes '%2F'.
  
• Is getFullyQualifiedResourceName overloaded elsewhere in your code accepting a String as the first parameter? The example you provide passes "subscriptions" as a first parameter where getFullyQualifiedResourceName seems to expect ResourceType (though I would assume ResourceType.collectionName would return "subscriptions" if it were a subscription ResourceType)
  
• What is the value of subscriptionName immediately before invoking pubsub.projects().subscriptions().create(subscriberName, subscription)? The documentation for said method reveals what characters are accepted as a name but not what method is used to safely encode the name.
  
• The log of the create() API call should reveal what the value of subscriberName becomes once URL-encoded. Can you also include that here?

[rni...@slb.com]

Hi

The subscriber name looks like

projects/project_name/subscriptions/subscriber_name

The funny part is i am able to run the same code in a different intellij project which does not include GAE end points JARS but when i try to run it in my current project which include endpoint jars it fails. is there a correlation here ?

Rohit

[Nicholas Gelinas]

Is it simply including the Endpoints JAR that makes this difference or is there some particular usage of it that causes the PubSub call to fail?

On Monday, February 29, 2016 at 5:28:37 PM UTC-5, Rohit Nigam wrote: