[OOM-K8S-CERT-EXTERNAL-PROVIDER] Add project

This project is a GOlang implementation of an external provider for kubernetes cert-manager.
External provider will use OOM CertService as backend signing CA.

Issue-ID: OOM-2559
Signed-off-by: Jan Malkiewicz <jan.malkiewicz@nokia.com>
Change-Id: Ide31ca64c29763c9d4e9bdf58d8f50ffddcaaf5d

11 files changed, 256 insertions, 0 deletions

diff --git a/certServiceK8sExternalProvider/.gitignore b/certServiceK8sExternalProvider/.gitignore
new file mode 100644
index 00000000..ba077a40
--- /dev/null
+++ b/certServiceK8sExternalProvider/.gitignore
@@ -0,0 +1 @@
+bin
diff --git a/certServiceK8sExternalProvider/Dockerfile b/certServiceK8sExternalProvider/Dockerfile
new file mode 100644
index 00000000..baea932b
--- /dev/null
+++ b/certServiceK8sExternalProvider/Dockerfile
@@ -0,0 +1,22 @@
+# Build the manager binary
+FROM golang:1.15.2 as builder
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.* ./
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+
+# Build
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o oom-certservice-k8s-external-provider main.go
+
+
+# Runtime container definition
+FROM gcr.io/distroless/static:latest
+WORKDIR /
+COPY --from=builder /workspace/oom-certservice-k8s-external-provider .
+ENTRYPOINT ["/oom-certservice-k8s-external-provider"]
diff --git a/certServiceK8sExternalProvider/Makefile b/certServiceK8sExternalProvider/Makefile
new file mode 100644
index 00000000..2fac43e0
--- /dev/null
+++ b/certServiceK8sExternalProvider/Makefile
@@ -0,0 +1,9 @@
+build:
+	go build -v -o bin//oom-certservice-k8s-external-provider oom-certservice/k8s-external-provider
+
+build-docker-image:
+	docker build -t onap/oom-certservice-k8s-external-provider .
+
+run-docker-image:
+	docker run -it onap/oom-certservice-k8s-external-provider
+
diff --git a/certServiceK8sExternalProvider/README.md b/certServiceK8sExternalProvider/README.md
new file mode 100644
index 00000000..55eb0d0c
--- /dev/null
+++ b/certServiceK8sExternalProvider/README.md
@@ -0,0 +1,9 @@
+## Project seed for applications written in go lang
+
+### Build project
+
+Just run **mvn** command without any parameters (which is by default equal to **mvn clean package**).
+
+The output executable file will be present in bin directory with name: **onap-golang-helloworld-1.0.0-SNAPSHOT**
+
+To run the program just type: **bin/onap-golang-helloworld-1.0.0-SNAPSHOT**
diff --git a/certServiceK8sExternalProvider/go.mod b/certServiceK8sExternalProvider/go.mod
new file mode 100644
index 00000000..2d611841
--- /dev/null
+++ b/certServiceK8sExternalProvider/go.mod
@@ -0,0 +1,9 @@
+module onap.org/oom-certservice/k8s-external-provider
+
+go 1.15
+
+require (
+	// Apache 2.0 license: https://github.com/levigross/grequests/blob/master/LICENSE
+	github.com/levigross/grequests v0.0.0-20190908174114-253788527a1a
+	golang.org/x/net v0.0.0-20200927032502-5d4f70055728 // indirect
+)
diff --git a/certServiceK8sExternalProvider/go.sum b/certServiceK8sExternalProvider/go.sum
new file mode 100644
index 00000000..c2501685
--- /dev/null
+++ b/certServiceK8sExternalProvider/go.sum
@@ -0,0 +1,17 @@
+github.com/go-logr/logr v0.2.1 h1:fV3MLmabKIZ383XifUjFSwcoGee0v9qgPp8wy5svibE=
+github.com/go-logr/logr v0.2.1/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
+github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
+github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/levigross/grequests v0.0.0-20190908174114-253788527a1a h1:DGFy/362j92vQRE3ThU1yqg9TuJS8YJOSbQuB7BP9cA=
+github.com/levigross/grequests v0.0.0-20190908174114-253788527a1a/go.mod h1:jVntzcUU+2BtVohZBQmSHWUmh8B55LCNfPhcNCIvvIg=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/net v0.0.0-20181011144130-49bb7cea24b1 h1:Y/KGZSOdz/2r0WJ9Mkmz6NJBusp0kiNx1Cn82lzJQ6w=
+golang.org/x/net v0.0.0-20181011144130-49bb7cea24b1/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20200927032502-5d4f70055728 h1:5wtQIAulKU5AbLQOkjxl32UufnIOqgBX72pS0AV14H0=
+golang.org/x/net v0.0.0-20200927032502-5d4f70055728/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
diff --git a/certServiceK8sExternalProvider/main.go b/certServiceK8sExternalProvider/main.go
new file mode 100644
index 00000000..77ede105
--- /dev/null
+++ b/certServiceK8sExternalProvider/main.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"github.com/levigross/grequests"
+	"log"
+	certservice_provisioner "onap.org/oom-certservice/k8s-external-provider/src/certservice-provisioner"
+)
+
+func main() {
+	fmt.Println("   ***  Hello World Golang App  ***")
+	fmt.Println()
+
+	resp, err := grequests.Get("http://jenkins.onap.org/", nil)
+
+	if err != nil {
+		log.Fatalln("Unable to make request: ", err)
+	}
+
+	fmt.Println("Checking if jenkins.onap.org is reachable:", resp.StatusCode)
+
+	fmt.Println("Signing certificate...")
+	certservice_provisioner.SignCertificate()
+}
diff --git a/certServiceK8sExternalProvider/pom.xml b/certServiceK8sExternalProvider/pom.xml
new file mode 100644
index 00000000..6be62b77
--- /dev/null
+++ b/certServiceK8sExternalProvider/pom.xml
@@ -0,0 +1,144 @@
+<?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">
+  <parent>
+    <artifactId>oom-certservice</artifactId>
+    <groupId>org.onap.oom.platform.cert-service</groupId>
+    <version>2.1.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>oom-certservice-k8s-external-provider</artifactId>
+  <packaging>mvn-golang</packaging>
+
+  <properties>
+    <version.mvn-clean-plugin>3.1.0</version.mvn-clean-plugin>
+    <version.mvn-golang-wrapper-plugin>2.3.5</version.mvn-golang-wrapper-plugin>
+  </properties>
+
+  <build>
+    <!--Changing standard Maven project source structure to make it Go compatible-->
+    <sourceDirectory>${basedir}</sourceDirectory>
+    <directory>${basedir}${file.separator}bin</directory>
+
+    <defaultGoal>clean package</defaultGoal>
+
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-clean-plugin</artifactId>
+        <version>${version.mvn-clean-plugin}</version>
+        <configuration>
+          <followSymLinks>false</followSymLinks>
+          <excludeDefaultDirectories>true</excludeDefaultDirectories>
+          <filesets>
+            <fileset>
+              <directory>${basedir}${file.separator}bin</directory>
+            </fileset>
+          </filesets>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>com.igormaznitsa</groupId>
+        <artifactId>mvn-golang-wrapper</artifactId>
+        <version>${version.mvn-golang-wrapper-plugin}</version>
+        <extensions>true</extensions>
+        <executions>
+          <execution>
+            <id>run</id>
+            <goals>
+              <goal>run</goal>
+            </goals>
+            <configuration>
+              <packages>
+                <package>onap.org/oom-certservice/k8s-external-provider</package>
+              </packages>
+            </configuration>
+          </execution>
+          <execution>
+            <id>install</id>
+            <goals>
+              <goal>install</goal>
+            </goals>
+            <configuration>
+              <packages>
+                <package>onap.org/oom-certservice/k8s-external-provider/main</package>
+                <package>onap.org/oom-certservice/k8s-external-provider/certservice-provisioner</package>
+              </packages>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+  <profiles>
+
+    <profile>
+      <id>docker-staging</id>
+      <properties>
+        <docker.tag>${project.version}-STAGING-${maven.build.timestamp}</docker.tag>
+        <docker.latest.tag>${project.version}-STAGING-latest</docker.latest.tag>
+      </properties>
+    </profile>
+
+    <profile>
+      <id>docker</id>
+      <activation>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <properties>
+        <os.detected.name>linux</os.detected.name>
+        <os.detected.arch>x86_64</os.detected.arch>
+        <os.detected.classifier>${os.detected.name}-${os.detected.arch}</os.detected.classifier>
+      </properties>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>io.fabric8</groupId>
+            <artifactId>docker-maven-plugin</artifactId>
+            <version>${docker-maven-plugin.version}</version>
+            <executions>
+              <execution>
+                <id>docker-build-image</id>
+                <phase>package</phase>
+                <goals>
+                  <goal>build</goal>
+                </goals>
+              </execution>
+              <execution>
+                <id>docker-push-image</id>
+                <phase>deploy</phase>
+                <goals>
+                  <goal>push</goal>
+                </goals>
+              </execution>
+            </executions>
+            <configuration>
+              <skipPush>${skipDockerPush}</skipPush>
+              <verbose>true</verbose>
+              <imagePullPolicy>IfNotPresent</imagePullPolicy>
+              <images>
+                <image>
+                  <alias>${project.artifactId}</alias>
+                  <name>${docker-image.namespace}/${docker-image.name}:${docker-image.tag.latest}
+                  </name>
+                  <registry>${docker-image.registry}</registry>
+                  <build>
+                    <dockerFileDir>${project.basedir}</dockerFileDir>
+                    <tags>
+                      <tag>${project.version}-${maven.build.timestamp}Z</tag>
+                    </tags>
+                  </build>
+                </image>
+              </images>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
+
+</project>
diff --git a/certServiceK8sExternalProvider/src/certservice-provisioner/certservice-provisioner.go b/certServiceK8sExternalProvider/src/certservice-provisioner/certservice-provisioner.go
new file mode 100644
index 00000000..5648082a
--- /dev/null
+++ b/certServiceK8sExternalProvider/src/certservice-provisioner/certservice-provisioner.go
@@ -0,0 +1,7 @@
+package certservice_provisioner
+
+import "fmt"
+
+func SignCertificate() {
+	fmt.Println("--> This method is currently a stub.")
+}
diff --git a/certServiceK8sExternalProvider/test/certservice-provisioner/certservice-provisioner_test.go b/certServiceK8sExternalProvider/test/certservice-provisioner/certservice-provisioner_test.go
new file mode 100644
index 00000000..a9435e2d
--- /dev/null
+++ b/certServiceK8sExternalProvider/test/certservice-provisioner/certservice-provisioner_test.go
@@ -0,0 +1,13 @@
+package certservice_provisioner
+
+import (
+	certservice_provisioner "onap.org/oom-certservice/k8s-external-provider/src/certservice-provisioner"
+	"testing"
+)
+
+func TestSignCertificate(t *testing.T) {
+
+	certservice_provisioner.SignCertificate()
+
+	t.Logf("Everything is OK.")
+}
diff --git a/pom.xml b/pom.xml
index 528993b1..a867349f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,6 +76,7 @@
         <module>certService</module>
         <module>certServiceClient</module>
         <module>certServicePostProcessor</module>
+        <module>certServiceK8sExternalProvider</module>
     </modules>
 
     <build>