appengine-web.xml not being put in WEB-INF

[dclements]

This to me looks more or less identical to the README example. Am I missing something simple?

Bazel version:

$ bazel version
Build label: 0.8.0-homebrew
Build target: bazel-out/darwin-opt/bin/src/main/java/com/google/devtools/build/lib/bazel/BazelServer_deploy.jar
Build time: Mon Nov 27 20:38:09 2017 (1511815089)
Build timestamp: 1511815089
Build timestamp as int: 1511815089

.bazelrc:

build --experimental_repository_cache=/Users/dclemen/.bazel/cache

Structure of project:

foo/
    BUILD
    WORKSPACE
    src/main/java/<various>/
        - VariousFiles.java
    src/test/java/<various>
        - VariousFilesTest.java
    webapp/
        WEB-INF/
            appengine-web.xml
            logging.properties
            web.xml

WORKSPACE:

git_repository(
    name = "io_bazel_rules_appengine",
    remote = "https://github.com/bazelbuild/rules_appengine.git",
    tag = "0.0.7",
)

load("@io_bazel_rules_appengine//appengine:appengine.bzl", "appengine_repositories")
appengine_repositories()

<various maven_jar definitions>

BUILD:

load("@io_bazel_rules_appengine//appengine:appengine.bzl", "appengine_war")

package(default_visibility = ["//visibility:public"])

java_library(
    name = "java-maven-lib",
    resources = glob(["src/main/resources/**"]),
    srcs = glob(["src/main/java/**/*.java"]),
    deps = [
      "//external:appengine/java/api",
      "@io_bazel_rules_appengine//appengine:javax.servlet.api",
      <additional jars>
    ]
)

appengine_war(
    name = "foo-gae",
    jars = [":java-maven-lib"],
    data = glob(["webapp/**"]),
    data_path = "webapp",
)

<test definition, which if removed renders the exact same result>

I build it and then run it (with bazel run //:foo-gae -- --port=12345), and it generates the following exception:

SEVERE: Received exception processing /private/var/tmp/_bazel_dclemen/7b6609c6dba886f72d542786a5989753/execroot/__main__/bazel-out/darwin-fastbuild/bin/foo-gae.runfiles/__main__/WEB-INF/appengine-web.xml
com.google.apphosting.utils.config.AppEngineConfigException: Could not locate /private/var/tmp/_bazel_dclemen/7b6609c6dba886f72d542786a5989753/execroot/__main__/bazel-out/darwin-fastbuild/bin/foo-gae.runfiles/__main__/WEB-INF/appengine-web.xml
	at com.google.apphosting.utils.config.AppEngineWebXmlReader.getInputStream(AppEngineWebXmlReader.java:141)
	at com.google.apphosting.utils.config.AppEngineWebXmlReader.readAppEngineWebXml(AppEngineWebXmlReader.java:75)
	at com.google.apphosting.utils.config.EarHelper.readWebModule(EarHelper.java:178)
	at com.google.appengine.tools.development.ApplicationConfigurationManager$WarModuleConfigurationHandle.readConfiguration(ApplicationConfigurationManager.java:414)
	at com.google.appengine.tools.development.ApplicationConfigurationManager.<init>(ApplicationConfigurationManager.java:159)
	at com.google.appengine.tools.development.ApplicationConfigurationManager.newWarConfigurationManager(ApplicationConfigurationManager.java:101)
	at com.google.appengine.tools.development.ApplicationConfigurationManager.newWarConfigurationManager(ApplicationConfigurationManager.java:87)
	at com.google.appengine.tools.development.DevAppServerImpl.<init>(DevAppServerImpl.java:142)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.google.appengine.tools.development.DevAppServerFactory.doCreateDevAppServer(DevAppServerFactory.java:271)
	at com.google.appengine.tools.development.DevAppServerFactory.access$000(DevAppServerFactory.java:33)
	at com.google.appengine.tools.development.DevAppServerFactory$1.run(DevAppServerFactory.java:233)
	at com.google.appengine.tools.development.DevAppServerFactory$1.run(DevAppServerFactory.java:231)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:231)
	at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:101)
	at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:347)
	at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:47)
	at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:223)
	at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:214)
Caused by: java.io.FileNotFoundException: /private/var/tmp/_bazel_dclemen/7b6609c6dba886f72d542786a5989753/execroot/__main__/bazel-out/darwin-fastbuild/bin/foo-gae.runfiles/__main__/WEB-INF/appengine-web.xml (No such file or directory)
	at java.io.FileInputStream.open0(Native Method)
	at java.io.FileInputStream.open(FileInputStream.java:195)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:93)
	at com.google.apphosting.utils.config.AppEngineWebXmlReader.getInputStream(AppEngineWebXmlReader.java:137)
	... 22 more

com.google.apphosting.utils.config.AppEngineConfigException: Invalid configuration
	at com.google.appengine.tools.development.DevAppServerImpl.reportDeferredConfigurationException(DevAppServerImpl.java:432)
	at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:232)
	at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:47)
	at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:219)
	at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:217)
	at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:359)
	at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:47)
	at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:223)
	at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:214)
Caused by: com.google.apphosting.utils.config.AppEngineConfigException: Invalid appengine-web.xml(/private/var/tmp/_bazel_dclemen/7b6609c6dba886f72d542786a5989753/execroot/__main__/bazel-out/darwin-fastbuild/bin/foo-gae.runfiles/__main__/WEB-INF/appengine-web.xml) - Could not locate /private/var/tmp/_bazel_dclemen/7b6609c6dba886f72d542786a5989753/execroot/__main__/bazel-out/darwin-fastbuild/bin/foo-gae.runfiles/__main__/WEB-INF/appengine-web.xml

When I open up bazel-bin/foo-gae.war: I see the following structure:

/
    appengine-web.xml
    logging.properties
    web.xml
    WEB-INF/
        lib/
            - various.jar

[dclements]

On inspection I found that in _war_impl on the relative path code it was producing foo-gae.wa/webapp which looked… suspicious. So I substituted it out with foo-gae.war/webapp directly in the code. This caused build the war correctly, but it still wouldn't run with bazel run, giving the same error reported above. When I replaced it with just webapp it seems to have created the war successfully and launches more-or-less correctly (there's a classloader problem, but that may be a configuration on my end).

[ittaiz]

@dclements do you happen to have a branch of this online? Or can point me to the specific place you changed? I'm seeing the issue but couldn't find what you're talking about

[pmbethe09]

Well at HEAD with a recent bazel on linux or Mac I can
bazel run //examples/java:examples

and it works fine.

Looking at the example you have
jars = [":java-maven-lib"],

in your
appengine_war

Maybe we should try and fix it for you -- but as-is you need to specify the '_deploy.jar' which is an implicit output that creates a mega-jar from all of the small per-lib jars.

So change to

jars = [":java-maven-lib_deploy.jar"],

and try again