All things that are not code
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In this talk I’ll challenge what developers and devops consider things that belong in the code, what are the benefits for extracting concerns from the development life cycle and what approaches are we already seeing used. Among other I will explore different techniques companies are already taking (home grown solutions) and motivation for companies to create a software decoration framework running on devices for the purposes of A/B testing, dynamic analytics and gradually releasing features. The client side architecture that runs your code on multiple remote devices introduce new challenges but also new opportunities in how we view production code and how it is released. We will explore the new role of production control and how such systems enable devops tools management without the need to disrupt the development cycle and development team, we will show examples of profiling, logging, debugging, root cause analysis and customer support that are introduced to the system without the need for a release. (with real life examples)
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All things that are not code
- 1. All things that are not code
- 2. !code
- 3. Eyal Keren BASIC - first bug PERL - first time I couldn’t read my code JAVA - first unit test Vim TDD CTO & Co-founder @ Rollout.io @ekeren (github)
- 4. Once upon a time… While working @Intel
- 5. Once upon a time... public class MyClass{ public double calculateAnswer(String question){ //real code return answer; } }
- 6. public class MyClass{ static Logger log = Logger.getLogger(MyClass.class.getName()); public double calculateAnswer(String question){ log.debug("in calculateAnswer"); //real code return answer; } } Once upon a time...
- 7. public class MyClass{ static Logger log = Logger.getLogger(MyClass.class.getName()); public double calculateAnswer(String question){ log.debug("in calculateAnswer"); //real code log.debug("out calculateAnswer"); return answer; } } Once upon a time...
- 8. public class MyClass{ static Logger log = Logger.getLogger(MyClass.class.getName()); public double calculateAnswer(String question){ log.debug("in calculateAnswer question={}" ,question); //real code log.debug("out calculateAnswer answer={}" ,answer); return answer; } } Once upon a time...
- 9. public class MyClass{ static Logger log = Logger.getLogger(MyClass.class.getName()); public double calculateAnswer(String question){ //real code return answer; } } Once upon a time...
- 11. new system >> old system
- 12. new system >> old system Less mistakes Less performance cost Less data to process Less code
- 13. new system >> old system Less mistakes Less performance cost Less data to process Less untestable code
- 15. This talk boolean function isCode(){ return true; // TODO implement }
- 16. if (!code) { // TODO implement } This talk
- 17. • Once upon a time.. • !code by examples • Why Mobile? • !code definition • Q&A Agenda
- 18. Rate Us When a user press the restart button on a high score, let’s trigger rate us
- 19. Rate Us When a user press the restart button on a high score, let’s trigger rate us Definition R&D PMResults Implementation QA Release
- 20. Rate Us When a user press the restart button on a high score, let’s trigger rate us Definition R&D PMResults Implementation QA Release
- 21. • Methods are decorated on demand (before/after/inside) • You can define actions for decoration • Call these actions based on available data • Decoration are safe and guarded • Gradually rollout the decoration • Zero performance hit Imagine an Engine…
- 22. Rate Us Demo
- 24. !code
- 25. Not all code is created equal
- 26. Are these even necessary? Rate Us Testing Code Review QA Automated
- 27. YES - because we are humans Are these even necessary? Rate Us Testing Code Review QA Automated
- 28. Not all code is created equal
- 29. The Power of !code
- 30. Profiling
- 32. Profiling public void takesALongTimeInProduction(){ start_trace(“business_no_1”); doA(); doB(); doC(); doD(); end_trace(“business_no_1”); } public void doA(){ start_trace(“diag_AB”); //real code } public void doB(){ //real code end_trace(“diag_AB”); } public void doC(){ start_trace(“diag_C”); //real code end_trace(“diag_C”); } public void doD(){ //real code }
- 33. (Sounds familiar?) Profiling Get results into NR dashboard Set diag on 1% of users Figure out your next step Remove diag traces
- 34. Logs Use cases Automatic logging • View controller life cycle • Memory warnings • System notifications Upload your logs when something happens • If the flow gets here with this value • Until you get 5 logs of this issue
- 35. Rollout
- 36. Mixpanel Surveys Apptimize Intercom HelpShift LeanPlum Rollout iRateMixpanel analytics Mixpanel A/B Launchdarkly Parse config Configo LinkedIn Facebook ZenDesk Insert.io Elasticode Google Tag Manager Segment
- 37. Mixpanel Surveys Apptimize Intercom HelpShift LeanPlum Rollout iRateMixpanel analytics Mixpanel A/B Launchdarkly Parse config Configo LinkedIn Facebook ZenDesk Insert.io Elasticode Google Tag Manager Segment Github/Jira for !Code
- 38. Why Mobile ?
- 39. Why Mobile first ?
- 40. Why Mobile first ?
- 41. encoding:NSUTF8StringEncoding error:nil];; if ((self = [self initWithVertexShaderString:vertexShaderString fragmentShaderString:fragmentShaderString])) { } return self;; } // END:init // START:compile - (BOOL)compileShader:(GLuint *)shader type:(GLenum)type string:(NSString *)shaderString { // CFAbsoluteTime startTime = CFAbsoluteTimeGetCurrent();; GLint status;; const GLchar *source;; source = (GLchar *)[shaderString UTF8String];; if (!source) { NSLog(@"Failed to load vertex shader");; return NO;; } *shader = glCreateShader(type);; glShaderSource(*shader, 1, &source, NULL);; glCompileShader(*shader);; glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);; if (status != GL_TRUE) { GLint logLength;; glGetShaderiv(*shader, GL_INFO_LOG_LENGTH, &logLength);; if (logLength > 0) { GLchar *log = (GLchar *)malloc(logLength);; glGetShaderInfoLog(*shader, logLength, &logLength, log);; NSLog(@"Shader compile log:n%s", log);; free(log);; } } // CFAbsoluteTime linkTime = (CFAbsoluteTimeGetCurrent() - startTime);; // NSLog(@"Compiled in %f ms", linkTime * 1000.0);; return status == GL_TRUE;; } // END:compile #pragma mark - // START:addattribute - (void)addAttribute:(NSString *)attributeName { if (![attributes containsObject:attributeName]) { [attributes addObject:attributeName];; glBindAttribLocation(program, (GLuint)[attributes indexOfObject:attributeName], [attributeName UTF8String]);; } } // END:addattribute // START:indexmethods - (GLuint)attributeIndex:(NSString *)attributeName { return (GLuint)[attributes indexOfObject:attributeName];; } - (GLuint)uniformIndex:(NSString *)uniformName { return glGetUniformLocation(program, [uniformName UTF8String]);; } // END:indexmethods #pragma mark - // START:link - (BOOL)link { // CFAbsoluteTime startTime = CFAbsoluteTimeGetCurrent();; GLint status;; glLinkProgram(program);; glGetProgramiv(program, GL_LINK_STATUS, &status);; if (status == GL_FALSE) return NO;; if (vertShader) { glDeleteShader(vertShader);; vertShader = 0;; } if (fragShader) { glDeleteShader(fragShader);; fragShader = 0;; } self.initialized = YES;; // !code
- 42. !code Smells if C do A • C: • Remotely configured • opinionated • A: • Volatile • Not testable • Doesn’t change the application behavior
- 43. Look for !Code Mixpanel Surveys Apptimize Intercom HelpShift LeanPlum Rollout iRateMixpanel analytics Mixpanel A/B Launchdarkly Parse config Configo LinkedIn Facebook ZenDesk Insert.io Elasticode
- 44. Q&A