Update java guide to work on windows (#16)

Author: nicks

.circleci/config.yml

@@ -8,5 +8,5 @@ jobs:
       - setup_remote_docker
       - checkout
       - run: echo "deb http://ftp.us.debian.org/debian sid main" >> /etc/apt/sources.list
-      - run: apt update && apt install -y openjdk-8-jdk unzip rsync
+      - run: apt update && apt install -y openjdk-8-jdk unzip rsync python
       - run: with-kind-cluster.sh test/test.sh

1-measured/Tiltfile

@@ -5,7 +5,7 @@
 # shows you how to set up a custom workflow that measures it.
 local_resource(
     'deploy',
-    './record-start-time.sh',
+    'python record-start-time.py',
 )
 
 docker_build('example-java-image', '.')

1-measured/record-start-time.py

@@ -0,0 +1,20 @@
+import re
+import time
+
+filename = "src/main/java/dev/tilt/example/IndexController.java"
+f = open(filename, "r")
+contents = f.read()
+f.close()
+
+timestamp_sec = int(time.time())
+timestamp_nano = (float(time.time()) - timestamp_sec) * 1000 * 1000 * 1000
+contents = re.sub(r'startTimeSecs = .*;',
+                  "startTimeSecs = %d;" % timestamp_sec,
+                  contents)
+contents = re.sub(r'startTimeNanos = .*;',
+                  "startTimeNanos = %d;" % timestamp_nano,
+                  contents)
+
+f = open(filename, "w")
+f.write(contents)
+f.close()

1-measured/record-start-time.sh

@@ -9,8 +9,8 @@
 
 @Controller
 public class IndexController {
-  private final long startTimeSecs = 1585948785;
-  private final long startTimeNanos = 738488576;
+  private final long startTimeSecs = 1589420918;
+  private final long startTimeNanos = 445805788;
   private final String updateDuration;
 
   public IndexController() {

1-measured/src/main/java/dev/tilt/example/IndexController.java

@@ -5,12 +5,16 @@
 # shows you how to set up a custom workflow that measures it.
 local_resource(
     'deploy',
-    './record-start-time.sh',
+    'python record-start-time.py',
 )
 
+gradlew = "./gradlew"
+if os.name == "nt":
+  gradlew = "gradlew.bat"
+
 local_resource(
   'example-java-compile',
-  './gradlew bootJar',
+  gradlew + ' bootJar',
   deps=['src', 'build.gradle'],
   resource_deps = ['deploy'])
 

2-optimized/Tiltfile

@@ -0,0 +1,20 @@
+import re
+import time
+
+filename = "src/main/java/dev/tilt/example/IndexController.java"
+f = open(filename, "r")
+contents = f.read()
+f.close()
+
+timestamp_sec = int(time.time())
+timestamp_nano = (float(time.time()) - timestamp_sec) * 1000 * 1000 * 1000
+contents = re.sub(r'startTimeSecs = .*;',
+                  "startTimeSecs = %d;" % timestamp_sec,
+                  contents)
+contents = re.sub(r'startTimeNanos = .*;',
+                  "startTimeNanos = %d;" % timestamp_nano,
+                  contents)
+
+f = open(filename, "w")
+f.write(contents)
+f.close()

2-optimized/record-start-time.py

@@ -9,8 +9,8 @@
 
 @Controller
 public class IndexController {
-  private final long startTimeSecs = 1585948852;
-  private final long startTimeNanos = 998017468;
+  private final long startTimeSecs = 1589420974;
+  private final long startTimeNanos = 199830532;
   private final String updateDuration;
 
   public IndexController() {

2-optimized/record-start-time.sh

@@ -5,12 +5,16 @@
 # shows you how to set up a custom workflow that measures it.
 local_resource(
     'deploy',
-    './record-start-time.sh',
+    'python record-start-time.py',
 )
 
+gradlew = "./gradlew"
+if os.name == "nt":
+  gradlew = "gradlew.bat"
+
 local_resource(
   'example-java-compile',
-  './gradlew bootJar && ' +
+  gradlew + ' bootJar && ' +
   'unzip -o build/libs/example-0.0.1-SNAPSHOT.jar -d build/jar',
   deps=['src', 'build.gradle'],
   resource_deps = ['deploy'])

2-optimized/src/main/java/dev/tilt/example/IndexController.java

@@ -0,0 +1,20 @@
+import re
+import time
+
+filename = "src/main/java/dev/tilt/example/IndexController.java"
+f = open(filename, "r")
+contents = f.read()
+f.close()
+
+timestamp_sec = int(time.time())
+timestamp_nano = (float(time.time()) - timestamp_sec) * 1000 * 1000 * 1000
+contents = re.sub(r'startTimeSecs = .*;',
+                  "startTimeSecs = %d;" % timestamp_sec,
+                  contents)
+contents = re.sub(r'startTimeNanos = .*;',
+                  "startTimeNanos = %d;" % timestamp_nano,
+                  contents)
+
+f = open(filename, "w")
+f.write(contents)
+f.close()

3-unpacked/Tiltfile

@@ -9,8 +9,8 @@
 
 @Controller
 public class IndexController {
-  private final long startTimeSecs = 1585948876;
-  private final long startTimeNanos = 129265771;
+  private final long startTimeSecs = 1589420981;
+  private final long startTimeNanos = 366875886;
   private final String updateDuration;
 
   public IndexController() {

3-unpacked/record-start-time.py

@@ -5,12 +5,16 @@
 # shows you how to set up a custom workflow that measures it.
 local_resource(
     'deploy',
-    './record-start-time.sh',
+    'python record-start-time.py',
 )
 
+gradlew = "./gradlew"
+if os.name == "nt":
+  gradlew = "gradlew.bat"
+
 local_resource(
   'example-java-compile',
-  './gradlew bootJar && ' +
+  gradlew + ' bootJar && ' +
   'unzip -o build/libs/example-0.0.1-SNAPSHOT.jar -d build/jar-staging && ' +
   'rsync --inplace --checksum -r build/jar-staging/ build/jar',
   deps=['src', 'build.gradle'],

3-unpacked/record-start-time.sh

@@ -0,0 +1,20 @@
+import re
+import time
+
+filename = "src/main/java/dev/tilt/example/IndexController.java"
+f = open(filename, "r")
+contents = f.read()
+f.close()
+
+timestamp_sec = int(time.time())
+timestamp_nano = (float(time.time()) - timestamp_sec) * 1000 * 1000 * 1000
+contents = re.sub(r'startTimeSecs = .*;',
+                  "startTimeSecs = %d;" % timestamp_sec,
+                  contents)
+contents = re.sub(r'startTimeNanos = .*;',
+                  "startTimeNanos = %d;" % timestamp_nano,
+                  contents)
+
+f = open(filename, "w")
+f.write(contents)
+f.close()

3-unpacked/src/main/java/dev/tilt/example/IndexController.java

@@ -9,8 +9,8 @@
 
 @Controller
 public class IndexController {
-  private final long startTimeSecs = 1585948883;
-  private final long startTimeNanos = 217899651;
+  private final long startTimeSecs = 1589420989;
+  private final long startTimeNanos = 594529390;
   private final String updateDuration;
 
   public IndexController() {

4-recommended/Tiltfile

@@ -7,6 +7,12 @@ An example project that demonstrates a live-updating Java server in Kubernetes.
 We used [Spring Initializr](https://start.spring.io/) to bootstrap the project,
 then added Docker & Kubernetes configs for running it in Kubernetes.
 
+To run these examples, you should also have:
+- javac (a JDK)
+- unzip
+- rsync
+- python
+
 ## Fastest Deployment
 
 This progression of examples shows how to start, and incrementally update

4-recommended/record-start-time.py

@@ -0,0 +1,36 @@
+
+echo "Testing 0-base"
+tilt ci --file 0-base/Tiltfile
+if (!$?) {
+    throw "failed"
+}
+tilt down --file 0-base/Tiltfile
+
+echo "Testing 1-measured"
+tilt ci --file 1-measured/Tiltfile
+if (!$?) {
+    throw "failed"
+}
+tilt down --file 1-measured/Tiltfile
+
+echo "Testing 2-optimized"
+tilt ci --file 2-optimized/Tiltfile
+if (!$?) {
+    throw "failed"
+}
+tilt down --file 2-optimized/Tiltfile
+
+echo "Testing 3-unpacked"
+tilt ci --file 3-unpacked/Tiltfile
+if (!$?) {
+    throw "failed"
+}
+tilt down --file 3-unpacked/Tiltfile
+
+echo "Testing 4-recommended"
+tilt ci --file 4-recommended/Tiltfile
+if (!$?) {
+    throw "failed"
+}
+tilt down --file 4-recommended/Tiltfile
+