[NO MERGE] Prepare mvn central (#27)

Prepare mcumgr-android for publishing on maven central. 

This commit modifies the gradle build files for hosting on the maven
central repository. The gradle file which is used to upload the archives to
maven central is taken from https://github.com/JakeWharton/timber.

The group details for the project are located in the root
build.properties file. This file contains, among others:
    * Version: 0.6.3-SNAPSHOT
    * Group: io.runtime.mcumgr

The package specific artifact ID and name are located in the module
gradle.properties file. The core and transport specific implementations
have been split. The core now resides in the mcumgr-core module, 
while the BLE transport implementation has a separate module, 
mcumgr-ble, which pulls mcumgr-core in as an api dependency.

This change is useful to allow users to reimplement their own transport
layer or potentially add a new transport all together. Furthermore,
since I plan on adding the CoAP BLE transport at some point to the main
repo, this allows me to simply add a new module, mcumgr-coap-ble, rather
than adding it to mcumgr-android and forceing users to add dependencies
which they will not use.

Finally, I can forsee a future where the core could be broken out into
it's own plain java library for use in non-android applications. This
would simplify that process as it is already built as a separate
artifact.

Author: bgiori

build.gradle

@@ -6,20 +6,19 @@
  */
 
 buildscript {
-    
     repositories {
         google()
         jcenter()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.4'
-        // classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
     }
 }
 
 allprojects {
     repositories {
         google()
         jcenter()
+        maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
     }
 }

gradle.properties

@@ -1,17 +1,13 @@
-# Project-wide Gradle settings.
-
-# IDE (e.g. Android Studio) users:
-# Gradle settings configured through the IDE *will override*
-# any settings specified in this file.
-
-# For more details on how to configure your build environment visit
-# http://www.gradle.org/docs/current/userguide/build_environment.html
-
-# Specifies the JVM arguments used for the daemon process.
-# The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx1536m
-
-# When configured, Gradle will run in incubating parallel mode.
-# This option should only be used with decoupled projects. More details, visit
-# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
+VERSION_NAME=0.6.3-SNAPSHOT
+GROUP=io.runtime.mcumgr
+
+POM_DESCRIPTION=A mobile management library for devices running Apache Mynewt and Zephyr (DFU, logs, stats, config, etc.)
+POM_URL=https://github.com/runtimeco/mcumgr-android
+POM_SCM_URL=https://github.com/runtimeco/mcumgr-android
+POM_SCM_CONNECTION=scm:[email protected]:runtimeco/mcumgr-android.git
+POM_SCM_DEV_CONNECTION=scm:[email protected]:runtimeco/mcumgr-android.git
+POM_LICENCE_NAME=The Apache Software License, Version 2.0
+POM_LICENCE_URL=http://www.apache.org/licenses/LICENSE-2.0.txt
+POM_LICENCE_DIST=repo
+POM_DEVELOPER_ID=runtimeco
+POM_DEVELOPER_NAME=Runtime, Inc.

gradle/gradle-mvn-push.gradle

@@ -0,0 +1,213 @@
+/*
+ * Copyright 2013 Chris Banes
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+apply plugin: 'maven'
+apply plugin: 'signing'
+
+version = VERSION_NAME
+group = GROUP
+
+def isReleaseBuild() {
+    return !VERSION_NAME.contains("SNAPSHOT")
+}
+
+def getReleaseRepositoryUrl() {
+    return hasProperty('RELEASE_REPOSITORY_URL') ? RELEASE_REPOSITORY_URL :
+            "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
+}
+
+def getSnapshotRepositoryUrl() {
+    return hasProperty('SNAPSHOT_REPOSITORY_URL') ? SNAPSHOT_REPOSITORY_URL :
+            "https://oss.sonatype.org/content/repositories/snapshots/"
+}
+
+def getRepositoryUsername() {
+    return hasProperty('SONATYPE_NEXUS_USERNAME') ? SONATYPE_NEXUS_USERNAME : ""
+}
+
+def getRepositoryPassword() {
+    return hasProperty('SONATYPE_NEXUS_PASSWORD') ? SONATYPE_NEXUS_PASSWORD : ""
+}
+
+afterEvaluate { project ->
+    uploadArchives {
+        repositories {
+            mavenDeployer {
+                beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
+
+                pom.groupId = GROUP
+                pom.artifactId = POM_ARTIFACT_ID
+                pom.version = VERSION_NAME
+
+                repository(url: getReleaseRepositoryUrl()) {
+                    authentication(userName: getRepositoryUsername(), password: getRepositoryPassword())
+                }
+                snapshotRepository(url: getSnapshotRepositoryUrl()) {
+                    authentication(userName: getRepositoryUsername(), password: getRepositoryPassword())
+                }
+
+                pom.project {
+                    name POM_NAME
+                    packaging POM_PACKAGING
+                    description POM_DESCRIPTION
+                    url POM_URL
+
+                    scm {
+                        url POM_SCM_URL
+                        connection POM_SCM_CONNECTION
+                        developerConnection POM_SCM_DEV_CONNECTION
+                    }
+
+                    licenses {
+                        license {
+                            name POM_LICENCE_NAME
+                            url POM_LICENCE_URL
+                            distribution POM_LICENCE_DIST
+                        }
+                    }
+
+                    developers {
+                        developer {
+                            id POM_DEVELOPER_ID
+                            name POM_DEVELOPER_NAME
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    signing {
+        required { isReleaseBuild() && gradle.taskGraph.hasTask("uploadArchives") }
+        sign configurations.archives
+    }
+
+    if (project.getPlugins().hasPlugin('com.android.application') ||
+            project.getPlugins().hasPlugin('com.android.library')) {
+        task install(type: Upload, dependsOn: assemble) {
+            repositories.mavenInstaller {
+                configuration = configurations.archives
+
+                pom.groupId = GROUP
+                pom.artifactId = POM_ARTIFACT_ID
+                pom.version = VERSION_NAME
+
+                pom.project {
+                    name POM_NAME
+                    packaging POM_PACKAGING
+                    description POM_DESCRIPTION
+                    url POM_URL
+
+                    scm {
+                        url POM_SCM_URL
+                        connection POM_SCM_CONNECTION
+                        developerConnection POM_SCM_DEV_CONNECTION
+                    }
+
+                    licenses {
+                        license {
+                            name POM_LICENCE_NAME
+                            url POM_LICENCE_URL
+                            distribution POM_LICENCE_DIST
+                        }
+                    }
+
+                    developers {
+                        developer {
+                            id POM_DEVELOPER_ID
+                            name POM_DEVELOPER_NAME
+                        }
+                    }
+                }
+            }
+        }
+
+        task androidJavadocsJar(type: Jar) {
+            classifier = 'javadoc'
+            from "$buildDir/dokkaJavadoc"
+        }
+
+        task androidSourcesJar(type: Jar) {
+            classifier = 'sources'
+            from android.sourceSets.main.java.source
+        }
+    } else {
+        install {
+            repositories.mavenInstaller {
+                pom.groupId = GROUP
+                pom.artifactId = POM_ARTIFACT_ID
+                pom.version = VERSION_NAME
+
+                pom.project {
+                    name POM_NAME
+                    packaging POM_PACKAGING
+                    description POM_DESCRIPTION
+                    url POM_URL
+
+                    scm {
+                        url POM_SCM_URL
+                        connection POM_SCM_CONNECTION
+                        developerConnection POM_SCM_DEV_CONNECTION
+                    }
+
+                    licenses {
+                        license {
+                            name POM_LICENCE_NAME
+                            url POM_LICENCE_URL
+                            distribution POM_LICENCE_DIST
+                        }
+                    }
+
+                    developers {
+                        developer {
+                            id POM_DEVELOPER_ID
+                            name POM_DEVELOPER_NAME
+                        }
+                    }
+                }
+            }
+        }
+
+        task sourcesJar(type: Jar, dependsOn: classes) {
+            classifier = 'sources'
+            from sourceSets.main.allSource
+        }
+
+        task javadocJar(type: Jar, dependsOn: javadoc) {
+            classifier = 'javadoc'
+            from javadoc.destinationDir
+        }
+    }
+
+    if (JavaVersion.current().isJava8Compatible()) {
+        allprojects {
+            tasks.withType(Javadoc) {
+                options.addStringOption('Xdoclint:none', '-quiet')
+            }
+        }
+    }
+
+    artifacts {
+        if (project.getPlugins().hasPlugin('com.android.application') ||
+                project.getPlugins().hasPlugin('com.android.library')) {
+            archives androidSourcesJar
+            archives androidJavadocsJar
+        } else {
+            archives sourcesJar
+            archives javadocJar
+        }
+    }
+}

mcumgr-android-lib/build.gradle

@@ -0,0 +1,42 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 28
+
+
+
+    defaultConfig {
+        minSdkVersion 18
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    // Import the BLE Library
+    api 'no.nordicsemi.android:ble:2.0-alpha6'
+
+    // Import the Timber library
+    implementation 'com.jakewharton.timber:timber:4.7.1'
+
+    // Import mcumgr-core
+    api project(':mcumgr-core')
+
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}
+
+apply from: rootProject.file('gradle/gradle-mvn-push.gradle')

mcumgr-android-lib/.gitignore mcumgr-ble/.gitignore

@@ -0,0 +1,3 @@
+POM_ARTIFACT_ID=mcumgr-ble
+POM_NAME=McuManager Ble
+POM_PACKAGING=aar