Adds tests for HTTP device sample. (#954)

* Adds tests for HTTP device sample.

* Small change to instructions for README.

Author: gguuss

iot/api-client/http_example/README.md

@@ -134,3 +134,80 @@ Patch a device with RSA:
         -project_id=blue-jet-123 -pubsub_topic=hello-java \
         -registry_name=hello-java -rsa_certificate_file ../rsa_cert.pem \
         -device_id="java-device-0" -command=patch-device-rsa
+
+
+# Cloud IoT Core Java HTTP example
+
+This sample app publishes data to Cloud Pub/Sub using the HTTP bridge provided
+as part of Google Cloud IoT Core.
+
+Note that before you can run the sample, you must configure a Google Cloud
+PubSub topic for Cloud IoT Core and register a device as described in the
+[parent README](../README.md).
+
+## Setup
+
+Run the following command to install the dependencies using Maven:
+
+    mvn clean compile
+
+## Running the sample
+
+The following command summarizes the sample usage:
+
+```
+    mvn exec:java \
+        -Dexec.mainClass="com.example.cloud.iot.examples.HttpExample" \
+        -Dexec.args="-project_id=<your-iot-project> \
+                     -registry_id=<your-registry-id> \
+                     -device_id=<device-id> \
+                     -private_key_file=<path-to-keyfile> \
+                     -message_type=<event|state> \
+                     -algorithm=<RS256|ES256>"
+```
+
+For example, if your project ID is `blue-jet-123`, your service account
+credentials are stored in your home folder in creds.json and you have generated
+your credentials using the [`generate_keys.sh`](../generate_keys.sh) script
+provided in the parent folder, you can run the sample as:
+
+```
+    mvn exec:java \
+        -Dexec.mainClass="com.example.cloud.iot.examples.HttpExample" \
+        -Dexec.args="-project_id=blue-jet-123 \
+                     -registry_id=my-registry \
+                     -device_id=my-java-device \
+                     -private_key_file=../rsa_private_pkcs8 \
+                     -algorithm=RS256"
+```
+
+To publish state messages, run the sample as follows:
+
+```
+    mvn exec:java \
+        -Dexec.mainClass="com.example.cloud.iot.examples.HttpExample" \
+        -Dexec.args="-project_id=blue-jet-123 \
+                     -registry_id=my-registry \
+                     -device_id=my-java-device \
+                     -private_key_file=../rsa_private_pkcs8 \
+                     -message_type=state \
+                     -algorithm=RS256"
+```
+
+
+## Reading the messages written by the sample client
+
+1. Create a subscription to your topic.
+
+```
+    gcloud beta pubsub subscriptions create \
+        projects/your-project-id/subscriptions/my-subscription \
+        --topic device-events
+```
+
+2. Read messages published to the topic
+
+```
+    gcloud beta pubsub subscriptions pull --auto-ack \
+        projects/my-iot-project/subscriptions/my-subscription
+```

iot/api-client/http_example/pom.xml

@@ -37,6 +37,21 @@
   </properties>
 
   <dependencies>
+    <dependency>
+      <groupId>org.json</groupId>
+      <artifactId>json</artifactId>
+      <version>20090211</version>
+    </dependency>
+    <dependency>
+      <groupId>io.jsonwebtoken</groupId>
+      <artifactId>jjwt</artifactId>
+      <version>0.7.0</version>
+    </dependency>
+    <dependency>
+      <groupId>joda-time</groupId>
+      <artifactId>joda-time</artifactId>
+      <version>2.1</version>
+    </dependency>
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-cloudiot</artifactId>

iot/api-client/manager/README.md

@@ -0,0 +1,5 @@
+# Test public certificate files
+
+The certificates in this folder are only provided for testing and should not be
+used for registering your devices. Instructions and a shell script are in the
+parent folder for getting started.

iot/api-client/manager/pom.xml

@@ -1,4 +1,4 @@
 -----BEGIN PUBLIC KEY-----
-MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAECfwA4OrF9Pcr1W5mXUa+Dx8hpPYd
-+pQ5153zNtSSaeEnA/4hrY2AKxUHmKIPJXYRkZrxTxsFElkkpLcoi/CUNQ==
+MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEJ/zj75PhGtoayWD9pm/IbXRXi9ai
+RQDMFQ87sOOQIWDTxnsHFplqb8cDCtO1h5QsutcAVTPZL0CZiqIg5j7b1w==
 -----END PUBLIC KEY-----

iot/api-client/manager/resources/README.md

@@ -1,18 +1,18 @@
 -----BEGIN CERTIFICATE-----
-MIIC+DCCAeCgAwIBAgIJAJW4zZX4mjtpMA0GCSqGSIb3DQEBCwUAMBExDzANBgNV
-BAMMBnVudXNlZDAeFw0xNzA5MjUyMjM3MzhaFw0xNzEwMjUyMjM3MzhaMBExDzAN
-BgNVBAMMBnVudXNlZDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKaB
-voBJf6cr+Q+S1l/n5Bp0i7BEYeeCnUta+MIZle38y0E3TzXQvjMr8uk081RcWqFq
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-7WGRMpaztKpukEpgUszC75YM9XVQCal6m3eegu5BraiXrAjngGOAninBe56jhw/b
-HIqF85PXczI9BbUoJeq4VycRsdUa2dJSqMxKoF7T2blYLiLBFTyo72ZF6m8SAIzv
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-n3ljavj+QM+IiM5DvZMCAwEAAaNTMFEwHQYDVR0OBBYEFFK2kAhd7rYZInQxdk8T
-MZrXXBCrMB8GA1UdIwQYMBaAFFK2kAhd7rYZInQxdk8TMZrXXBCrMA8GA1UdEwEB
-/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAKCB1nQ2rFsnQpRRtvjDqlI03Opc
-8sfHQ4GxJ3L7ZuXx6MzH37k0+g5/dgGYhRM+Zm9fDnxD6a1c5fek+0iGGIHOg1Cw
-9lwqZN15w7SXxMiwxDVYoMBvx7JQEZSFeMfP3ZcKdwSaFRYXNRtbeC45VS70MwhM
-CgqqkGDi2hM/JGYxv+UCvIm5+JrF+4SGOFtZeIT8mayq+ZOiD3+Sqo1++mRNXkSr
-C8+QUjxW9y2CObE6d7Y/fryfO0mlWUnJS8Ed5H+12GqFWc7HudV2EIPS4RgthdZs
-odK3woxB+18j28C1toSaSzzUtaS6hxo+vNsRqfXeK9hCm3RxU3bWRUuQj1U=
+MIIC+DCCAeCgAwIBAgIJAMLUy4Aee8f0MA0GCSqGSIb3DQEBCwUAMBExDzANBgNV
+BAMMBnVudXNlZDAeFw0xNzEyMTIyMDQ3MTNaFw0xODAxMTEyMDQ3MTNaMBExDzAN
+BgNVBAMMBnVudXNlZDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAN1a
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+DsSSVhZKk5FUr0TFhXsgCj/cbynjVweKbdC4pvEAAQS3QJ3vObW/1bQ9AtINRwJo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=
 -----END CERTIFICATE-----

iot/api-client/manager/resources/ec_public.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDdWhkFaxeyeXKe
+2Sa2pfuzIGH5jmiuDq+bETmVRSMRuNL3o1hyxMAH+Pch1h8yXacWLqrwg4gSnLfo
+SRIVCbTyjB8miabCZ0IhLHG4Bs+3Yz2Bf4sNiNQU3Z68mkUBMPQxg8tlYJR/xK9w
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+QGhkNS60AXdD8PQZaE94b5L5A1v7PqVUmyqQXQHKO4BaniNOc9zMXg7EklYWSpOR
+VK9ExYV7IAo/3G8p41cHim3QuKbxAAEEt0Cd7zm1v9W0PQLSDUcCaOd7DWO/HwGF
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+Gen0b/ePu9PjZbmRKEcDPUYUNyiP58+1h6pY7y15icE+vM64gY8bWFRwlI0yzxhF
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+EGgOLKa63rYJQK4WLwP4mMEF
+-----END PRIVATE KEY-----