[infer][PR] [mvn] Handle recursive modules

Summary:
Don't assume pom.xml is always stored in init_work_dir/MODULE.
Use directory of the parent pom.xml instead.

Fixes  reading of invalid pom.xml filenames when using > 1 levels of modules. [Apache Beam](https://github.com/apache/beam):

> infer  -g --print-logs --  mvn -pl 'org.apache.beam:beam-sdks-java-io-jdbc' compile
> Infer version v0.10.0-1580e5b3
> Copyright 2009 - present Facebook. All Rights Reserved.
> INFER_ARGS = -g^--print-logs
> rest arg: compile
> rest arg: org.apache.beam:beam-sdks-java-io-jdbc
> rest arg: -pl
> rest arg: mvn
> Project root = /home/juergen/java/beam
> CWD = /home/juergen/java/beam
> Driver mode:
> Maven driver mode:
> prog = mvn
> Arg: -pl
> Arg: org.apache.beam:beam-sdks-java-io-jdbc
> Arg: compile
>
> Capturing in maven mode...
> Adding maven module /home/juergen/java/beam/sdks/java/build-tools
> Adding maven module /home/juergen/java/beam/sdks
> Adding maven module /home/juergen/java/beam/runners
> Adding maven module /home/juergen/java/beam/example
Closes https://github.com/facebook/infer/pull/593

Reviewed By: sblackshear

Differential Revision: D4627315

Pulled By: jvillard

fbshipit-source-id: 7ba33cc

infer/src/integration/Maven.ml

@@ -37,7 +37,7 @@ let infer_profile = lazy
 
 let pom_worklist = ref [CLOpt.init_work_dir]
 
-let add_infer_profile_to_xml maven_xml infer_xml =
+let add_infer_profile_to_xml dir maven_xml infer_xml =
   let copy xml_in xml_out = Xmlm.output xml_out (Xmlm.input xml_in) in
   (* whether we ever found a <profiles> tag *)
   let found_profiles_tag = ref false in
@@ -90,7 +90,7 @@ let add_infer_profile_to_xml maven_xml infer_xml =
              L.do_out "Found infer profile, not adding one@.";
              found_infer_profile := true
          | "module"::"modules"::_ ->
-             let abs_data = CLOpt.init_work_dir ^/ data in
+             let abs_data = dir ^/ data in
              L.do_out "Adding maven module %s@." abs_data;
              pom_worklist := abs_data::!pom_worklist
          | _ -> ()
@@ -118,7 +118,7 @@ let add_infer_profile mvn_pom infer_pom =
     let with_ic () =
       let xml_in = Xmlm.make_input ~strip:false (`Channel ic) in
       let xml_out = Xmlm.make_output ~nl:true (`Channel out_chan) in
-      add_infer_profile_to_xml xml_in xml_out in
+      add_infer_profile_to_xml (Filename.dirname mvn_pom) xml_in xml_out in
     protect ~f:with_ic ~finally:(fun () -> In_channel.close ic) in
   Utils.with_file infer_pom ~f:with_oc
 

infer/tests/build_systems/codetoanalyze/mvn/app_with_submodules/module2parent/module2/pom.xml

@@ -0,0 +1,13 @@
+<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/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.mycompany</groupId>
+    <artifactId>module2parent</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>module2</artifactId>
+  <packaging>jar</packaging>
+  <version>1.0-SNAPSHOT</version>
+  <name>module2</name>
+</project>

infer/tests/build_systems/codetoanalyze/mvn/app_with_submodules/module2parent/pom.xml

@@ -2,10 +2,13 @@
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.mycompany</groupId>
-  <artifactId>module2</artifactId>
+  <artifactId>module2parent</artifactId>
-  <packaging>jar</packaging>
   <version>1.0-SNAPSHOT</version>
-  <name>module2</name>
+  <name>module2parent</name>
+  <packaging>pom</packaging>
+  <modules>
+    <module>module2</module>
+  </modules>
   <dependencies>
     <dependency>
       <groupId>com.mycompany</groupId>

infer/tests/build_systems/codetoanalyze/mvn/app_with_submodules/pom.xml

@@ -9,6 +9,6 @@
   <url>http://maven.apache.org</url>
   <modules>
     <module>module1</module>
-    <module>module2</module>
+    <module>module2parent</module>
   </modules>
 </project>

infer/tests/build_systems/mvn/issues.exp

@@ -1,7 +1,7 @@
 -- app_with_submodules
-build_systems/codetoanalyze/mvn/app_with_submodules/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.mayCauseNPE2(), 4, NULL_DEREFERENCE, [start of procedure mayCauseNPE2(),start of procedure mayReturnNull(...),Taking false branch,return from a call to Pointers$A Pointers.mayReturnNull(int)]
+build_systems/codetoanalyze/mvn/app_with_submodules/module2parent/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.mayCauseNPE2(), 4, NULL_DEREFERENCE, [start of procedure mayCauseNPE2(),start of procedure mayReturnNull(...),Taking false branch,return from a call to Pointers$A Pointers.mayReturnNull(int)]
-build_systems/codetoanalyze/mvn/app_with_submodules/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.mayLeakResource2(), 7, RESOURCE_LEAK, [start of procedure mayLeakResource2(),start of procedure allocateResource(),return from a call to FileOutputStream Resources.allocateResource(),Taking false branch]
+build_systems/codetoanalyze/mvn/app_with_submodules/module2parent/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.mayLeakResource2(), 7, RESOURCE_LEAK, [start of procedure mayLeakResource2(),start of procedure allocateResource(),return from a call to FileOutputStream Resources.allocateResource(),Taking false branch]
-build_systems/codetoanalyze/mvn/app_with_submodules/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.twoResources2(), 11, RESOURCE_LEAK, [start of procedure twoResources2(),Taking true branch,exception java.io.IOException]
+build_systems/codetoanalyze/mvn/app_with_submodules/module2parent/module2/src/main/java/com/mycompany/Hello2.java, void Hello2.twoResources2(), 11, RESOURCE_LEAK, [start of procedure twoResources2(),Taking true branch,exception java.io.IOException]
 build_systems/codetoanalyze/mvn/simple_app/src/main/java/com/mycompany/Hello.java, void Hello.mayCauseNPE(), 4, NULL_DEREFERENCE, [start of procedure mayCauseNPE(),start of procedure mayReturnNull(...),Taking false branch,return from a call to Pointers$A Pointers.mayReturnNull(int)]
 build_systems/codetoanalyze/mvn/simple_app/src/main/java/com/mycompany/Hello.java, void Hello.mayLeakResource(), 7, RESOURCE_LEAK, [start of procedure mayLeakResource(),start of procedure allocateResource(),return from a call to FileOutputStream Resources.allocateResource(),Taking false branch]
 build_systems/codetoanalyze/mvn/simple_app/src/main/java/com/mycompany/Hello.java, void Hello.twoResources(), 11, RESOURCE_LEAK, [start of procedure twoResources(),Taking true branch,exception java.io.IOException]