Merge branch 'master' into swarm2017

2026-07-28 01:01:12 +00:00 · 2017-12-21 05:56:10 +01:00
parent 1195f2c471 2a138102fc
commit 4fb1e41769
12 changed files with 764 additions and 84 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -7,5 +7,5 @@ prepare-vms/ips.pdf
 prepare-vms/settings.yaml
 prepare-vms/tags
 slides/*.yml.html
-slides/state.yaml
+slides/autopilot/state.yaml
 node_modules
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ because they have a few things in common:
  (and updated) identically between different decks;
 - a [build system](slides/) generating HTML slides from
  Markdown source files;
- a [semi-automated test harness](slides/autotest.py) to check
+- a [semi-automated test harness](slides/autopilot/) to check
  that the exercises and examples provided work properly;
 - a [PhantomJS script](slides/slidechecker.js) to check
  that the slides look good and don't have formatting issues;
--- a/slides/autopilot/autotest.py
+++ b/slides/autopilot/autotest.py
@@ -43,9 +43,6 @@ class State(object):
                next_step=self.next_step), f, default_flow_style=False)


-state = State()
-
-
 def hrule():
    return "="*int(subprocess.check_output(["tput", "cols"]))

@@ -99,46 +96,56 @@ class Slide(object):
    def debug(self):
        logging.debug("\n{}\n{}\n{}".format(hrule(), self.content, hrule()))

-
-# Synchronize the slide currently tested with an external browser
-class Tracker(object):
+# Synchronize slides in a remote browser
+class Remote(object):

    def __init__(self):
-        self.slide_on_screen = None
-    
+        self.slide_on_screen = 0
+
    # Directly go to a specific slide
    def goto(self, slide_number):
        subprocess.check_call(["./gotoslide.js", str(slide_number)])
        self.slide_on_screen = slide_number
-
-    # Advance by one slide
-    def advance(self):
-        self.goto(self.slide_on_screen+1)
+        focus_slides()

    # Offer the opportunity to go step by step to the given slide
    def catchup(self, slide_number):
-        if self.slide_on_screen == slide_number:
-            return
-        if self.slide_on_screen == None:
-            return self.goto(slide_number)
        if self.slide_on_screen > slide_number:
            return self.goto(slide_number)
        while self.slide_on_screen < slide_number:
            if state.interactive:
                print("Catching up on slide: {} -> {}"
                    .format(self.slide_on_screen, slide_number))
-                print("z       Zoom to target slide")
-                print("⎵       Advance by one slide")
+                print("z/⏎     Zoom to target slide")
+                print("n/→/⎵   Next slide")
+                print("p/←     Previous slide")
+                print("q       Abort remote control")
                command = click.getchar()
            else:
                command = "z"
-            if command == "z":
+            if command in ("z", "\r"):
                self.goto(slide_number)
-            elif command == " ":
-                self.advance()
+            elif command in ("n", "\x1b[C", " "):
+                self.goto(self.slide_on_screen+1)
+            elif command in ("p", "\x1b[D"):
+                self.goto(self.slide_on_screen-1)
+            elif command == "q":
+                return


-tracker = Tracker()
+def focus_slides():
+    subprocess.check_call(["i3-msg", "workspace", "3"])
+    subprocess.check_call(["i3-msg", "workspace", "1"])
+    time.sleep(1)
+
+def focus_terminal():
+    subprocess.check_call(["i3-msg", "workspace", "2"])
+    subprocess.check_call(["i3-msg", "workspace", "1"])
+    time.sleep(1)
+
+
+remote = Remote()
+state = State()


 def ansi(code):
@@ -212,9 +219,19 @@ def setup_tmux_and_ssh():

 slides = []
 content = open(sys.argv[1]).read()
+
+# OK, this part is definitely hackish, and will break if the
+# excludedClasses parameter is not on a single line.
+excluded_classes = re.findall("excludedClasses: (\[.*\])", content)
+excluded_classes = set(eval(excluded_classes[0]))
+
 for slide in re.split("\n---?\n", content):
-    # FIXME: hack: do not add slides from the 'in-person' deck
-    if re.search("class:.*in-person", slide):
+    slide_classes = re.findall("class: (.*)", slide)
+    if slide_classes:
+        slide_classes = slide_classes[0].split(",")
+        slide_classes = [c.strip() for c in slide_classes]
+    if excluded_classes & set(slide_classes):
+        logging.info("Skipping excluded slide.")
        continue
    slides.append(Slide(slide))

@@ -237,13 +254,17 @@ def send_keys(data):
        for key in data:
            if key == ";":
                key = "\\;"
+            if key == "\n":
+                time.sleep(1)
            subprocess.check_call(["tmux", "send-keys", key])
-            time.sleep(0.1*random.random())
+            time.sleep(0.2*random.random())
+            if key == "\n":
+                time.sleep(1)
    else:
        subprocess.check_call(["tmux", "send-keys", data])

 def capture_pane():
-    return subprocess.check_output(["tmux", "capture-pane", "-p"])
+    return subprocess.check_output(["tmux", "capture-pane", "-p"]).decode('utf-8')


 setup_tmux_and_ssh()
@@ -269,20 +290,20 @@ while state.next_step < len(actions):
    # Remove extra spaces (we don't want them in the terminal) and carriage returns
    data = data.strip()

-    tracker.catchup(slide.number)
+    # Synchronize the remote slides
+    remote.catchup(slide.number)

    print(hrule())
    print(slide.content.replace(snippet.content, ansi(7)(snippet.content)))
    print(hrule())
-    print(slide.number)
    if state.interactive:
        print("simulate_type:{} verify_status:{}".format(state.simulate_type, state.verify_status))
        print("[{}/{}] Shall we execute that snippet above?".format(state.next_step, len(actions)))
-        print("y/⏎/→   Execute snippet")
+        print("y/⎵/⏎   Execute snippet")
        print("p/←     Previous snippet")
-        print("s       Skip snippet")
-        print("t       Toggle typist simulation")
-        print("v       Toggle verification of exit status")
+        print("n/→     Next snippet")
+        print("s       Simulate keystrokes")
+        print("v       Validate exit status")
        print("g       Go to a specific snippet")
        print("q       Quit")
        print("c       Continue non-interactively until next error")
@@ -296,24 +317,26 @@ while state.next_step < len(actions):
        logging.info("Stripping ` from snippet.")
        data = data.replace('`', '')

-    if command == "s":
+    if command in ("n", "\x1b[C"):
        state.next_step += 1
    elif command in ("p", "\x1b[D"):
        state.next_step -= 1
-    elif command == "t":
+    elif command == "s":
        state.simulate_type = not state.simulate_type
    elif command == "v":
        state.verify_status = not state.verify_status
    elif command == "g":
        state.next_step = click.prompt("Enter snippet number", type=int)
+        # Special case: if we go to snippet 0, also reset the slides deck
        if state.next_step == 0:
-            tracker.catchup(0)
+            remote.goto(1)
    elif command == "q":
        break
    elif command == "c":
        # continue until next timeout
        state.interactive = False
-    elif command in ("y", "\r", " ", "\x1b[C"):
+    elif command in ("y", "\r", " "):
+        focus_terminal()
        logging.info("Running with method {}: {}".format(method, data))
        if method == "keys":
            send_keys(data)
--- a/slides/autopilot/gotoslide.js
+++ b/slides/autopilot/gotoslide.js
@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+
+/* Expects a slide number as first argument.
+ * Will connect to the local pub/sub server,
+ * and issue a "go to slide X" command, which
+ * will be sent to all connected browsers.
+ */
+
+var io = require('socket.io-client');
+var socket = io('http://localhost:3000');
+socket.on('connect_error', function(){ 
+  console.log('connection error');
+  socket.close();
+});
+socket.emit('slide change', process.argv[2], function(){
+  socket.close();
+});
--- a/slides/autopilot/package-lock.json
+++ b/slides/autopilot/package-lock.json
@@ -0,0 +1,603 @@
+{
+  "name": "container-training-pub-sub-server",
+  "version": "0.0.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "accepts": {
+      "version": "1.3.4",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.4.tgz",
+      "integrity": "sha1-hiRnWMfdbSGmR0/whKR0DsBesh8=",
+      "requires": {
+        "mime-types": "2.1.17",
+        "negotiator": "0.6.1"
+      }
+    },
+    "after": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
+      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
+    },
+    "array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
+    "arraybuffer.slice": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz",
+      "integrity": "sha1-8zshWfBTKj8xB6JywMz70a0peco="
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+    "async-limiter": {
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+      "version": "1.5.4",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.4.tgz",
+      "integrity": "sha1-BPVgkVcks4kIhxXMDteBPpZ3v1c="
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+      "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
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+}
--- a/slides/autopilot/package.json
+++ b/slides/autopilot/package.json
@@ -0,0 +1,8 @@
+{
+  "name": "container-training-pub-sub-server",
+  "version": "0.0.1",
+  "dependencies": {
+    "express": "^4.16.2",
+    "socket.io": "^2.0.4"
+  }
+}
--- a/slides/autopilot/remote.js
+++ b/slides/autopilot/remote.js
@@ -0,0 +1,21 @@
+/* This snippet is loaded from the workshop HTML file.
+ * It sets up callbacks to synchronize the local slide
+ * number with the remote pub/sub server.
+ */
+
+var socket = io();
+var leader = true;
+
+slideshow.on('showSlide', function (slide) {
+  if (leader) {
+    var n = slide.getSlideIndex()+1;
+    socket.emit('slide change', n);
+  }
+});
+
+socket.on('slide change', function (n) {
+  leader = false;
+  slideshow.gotoSlide(n);
+  leader = true;
+});
+
--- a/slides/autopilot/server.js
+++ b/slides/autopilot/server.js
@@ -0,0 +1,41 @@
+#!/usr/bin/env node
+
+/* This is a very simple pub/sub server, allowing to
+ * remote control browsers displaying the slides.
+ * The browsers connect to this pub/sub server using
+ * Socket.IO, and the server tells them which slides
+ * to display.
+ *
+ * The server can be controlled with a little CLI,
+ * or by one of the browsers.
+ */
+
+var express = require('express');
+var app = express();
+var http = require('http').Server(app);
+var io = require('socket.io')(http);
+
+app.get('/', function(req, res){
+  res.send('container.training autopilot pub/sub server');
+});
+
+/* Serve remote.js from the current directory */
+app.use(express.static('.'));
+
+/* Serve slides etc. from current and the parent directory */
+app.use(express.static('..'));
+
+io.on('connection', function(socket){
+  console.log('a client connected: ' + socket.handshake.address);
+  socket.on('slide change', function(n, ack){
+    console.log('slide change: ' + n);
+    socket.broadcast.emit('slide change', n);
+    if (typeof ack === 'function') {
+      ack();
+    }
+  });
+});
+
+http.listen(3000, function(){
+  console.log('listening on *:3000');
+});
--- a/slides/autopilot/tmux-style.sh
+++ b/slides/autopilot/tmux-style.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+# This removes the clock (and other extraneous stuff) from the
+# tmux status bar, and it gives it a non-default color.
+tmux set-option -g status-left ""
+tmux set-option -g status-right ""
+tmux set-option -g status-style bg=cyan
+
--- a/slides/gotoslide.js
+++ b/slides/gotoslide.js
@@ -1,6 +0,0 @@
-#!/usr/bin/env node
-var io = require('socket.io-client');
-var socket = io('http://localhost:3000');
-socket.emit('slide change', process.argv[2], function () {
-    socket.close();
-});
--- a/slides/pubsub.js
+++ b/slides/pubsub.js
@@ -1,26 +0,0 @@
-#!/usr/bin/env node
-var express = require('express');
-var app = express();
-var http = require('http').Server(app);
-var io = require('socket.io')(http);
-
-app.get('/', function(req, res){
-  res.send('<h1>Hello world</h1>');
-});
-
-app.use(express.static('.'));
-
-io.on('connection', function(socket){
-  console.log('a client connected');
-  socket.on('slide change', function(n, ack){
-    console.log('slide change: ' + n);
-    socket.broadcast.emit('slide change', n);
-    if (typeof ack === 'function') {
-      ack();
-    }
-  });
-});
-
-http.listen(3000, function(){
-  console.log('listening on *:3000');
-});
--- a/slides/workshop.html
+++ b/slides/workshop.html
@@ -32,22 +32,14 @@
      });
    </script>
    
+    <!-- 
+    These two scripts will be available only when loading the
+    content using the pub/sub server. Otherwise, they'll just
+    404 and that's OK.
+    -->
    <script src="/socket.io/socket.io.js">
    </script>
-    <script>
-    var socket = io();
-    var leader = true;
-    slideshow.on('showSlide', function (slide) {
-      if (leader) {
-        var n = slide.getSlideIndex()+1;
-        socket.emit('slide change', n);
-      }
-    });
-    socket.on('slide change', function (n) {
-      leader = false;
-      slideshow.gotoSlide(n);
-      leader = true;
-    });
+    <script src="/remote.js">
    </script>

  </body>