Merge pull request #394 from cncf/feature/#385-git-prereq

Feature/#385 Git now part of prereqs

Author: taylor

spec/prereqs_spec.cr

@@ -6,14 +6,15 @@ require "file_utils"
 require "sam"
 
 describe "Prereq" do
-  it "'prereq' should check the system for prerequisites", tags: "happy-path"  do
+  it "'prereq' should check the system for prerequisites", tags: "prereqs"  do
     response_s = `./cnf-conformance prereqs verbose`
     LOGGING.info response_s
     $?.success?.should be_true
     (/helm found/ =~ response_s).should_not be_nil
     (/wget found/ =~ response_s).should_not be_nil
     (/curl found/ =~ response_s).should_not be_nil
     (/kubectl found/ =~ response_s).should_not be_nil
+    (/git found/ =~ response_s).should_not be_nil
   end
 
 end

spec/utils/system_information/git_spec.cr

@@ -0,0 +1,27 @@
+require "../../spec_helper"
+require "colorize"
+require "../../../src/tasks/utils/utils.cr"
+require "../../../src/tasks/prereqs.cr"
+require "../../../src/tasks/utils/system_information/git.cr"
+require "file_utils"
+require "sam"
+
+describe "Git" do
+
+  it "'git_global_response()' should return the information about the git installation", tags: "git-prereq"  do
+    (git_global_response(true)).should contain("git version")
+  end
+
+  it "'git_local_response()' should return the information about the git installation", tags: "git-prereq"  do
+    (git_local_response(true)).should eq("") 
+  end
+
+  it "'git_version()' should return the information about the git version", tags: "git-prereq"  do
+    (git_version(git_global_response)).should match(/(([0-9]{1,3}[\.]){1,2}[0-9]{1,3})/)
+    (git_version(git_local_response)).should contain("")
+  end
+
+  it "'git_installations()' should return the information about the git installation", tags: "git-prereq"  do
+    (git_installation(true)).should contain("git found")
+  end
+end

src/tasks/prereqs.cr

@@ -6,12 +6,14 @@ require "./utils/system_information/helm.cr"
 require "./utils/system_information/wget.cr"
 require "./utils/system_information/curl.cr"
 require "./utils/system_information/kubectl.cr"
+require "./utils/system_information/git.cr"
 
 task "prereqs" do  |_, args|
   if helm_installation.includes?("helm found") &&
       wget_installation.includes?("wget found") &&
       curl_installation.includes?("curl found") &&
-      kubectl_installation.includes?("kubectl found")
+      kubectl_installation.includes?("kubectl found") &&
+      git_installation.includes?("git found")
       stdout_success "All prerequisites found."
   else
     stdout_failure "Setup failed. Some prerequisites are missing. Please install all of the prerequisites before continuing."

src/tasks/utils/system_information/git.cr

@@ -0,0 +1,82 @@
+require "file_utils"
+require "colorize"
+require "totem"
+
+def git_installation(verbose=false)
+  gmsg = "No Global git version found"
+  lmsg = "No Local git version found"
+  ggit = git_global_response
+  VERBOSE_LOGGING.info ggit if verbose
+  
+  global_git_version = git_version(ggit, verbose)
+   
+  if !global_git_version.empty?
+    gmsg = "Global git found. Version: #{global_git_version}"
+    stdout_success gmsg
+  else
+    stdout_warning gmsg
+  end
+
+  lgit = git_local_response
+  VERBOSE_LOGGING.info lgit if verbose
+  
+  local_git_version = git_version(lgit, verbose)
+   
+  if !local_git_version.empty?
+    lmsg = "Local git found. Version: #{local_git_version}"
+    stdout_success lmsg
+  else
+    stdout_warning lmsg
+  end
+
+  # uncomment to fail the installation check
+  # global_git_version = nil
+  # local_git_version = nil
+  # gmsg = "No Global git version found"
+  # lmsg = "No Local git version found"
+  if !(global_git_version && local_git_version)
+    stdout_failure "Git not found"
+    stdout_failure %Q(
+    Linux installation instructions for Git can be found here: https://github.com/git-guides/install-git 
+
+    Install git binary with curl on Linux
+
+    On Debian/Ubuntu:
+
+    sudo apt-get install git-all
+
+    On Fedora
+
+    sudo dnf install git-all
+    )
+  end
+  "#{lmsg} #{gmsg}"
+end 
+
+def git_global_response(verbose=false)
+  git_response = `git version`
+  VERBOSE_LOGGING.info git_response if verbose
+  git_response 
+end
+
+def git_local_response(verbose=false)
+  current_dir = FileUtils.pwd 
+  VERBOSE_LOGGING.info current_dir if verbose 
+  git = "#{current_dir}/#{TOOLS_DIR}/git/linux-amd64/git"
+  # git_response = `#{git} version`
+  status = Process.run("#{git} version", shell: true, output: git_response = IO::Memory.new, error: stderr = IO::Memory.new)
+  VERBOSE_LOGGING.info git_response.to_s if verbose
+  git_response.to_s
+end
+
+def git_version(git_response, verbose=false)
+  # example
+  # git version 1.9.1 
+  resp = git_response.match /git version (([0-9]{1,3}[\.]){1,2}[0-9]{1,3})/
+  VERBOSE_LOGGING.info resp if verbose
+  if resp
+    "#{resp && resp.not_nil![1]}"
+  else
+    ""
+  end
+end