Top Level Namespace

Defined Under Namespace

Modules: Appsignal Classes: Object

Constant Summary collapse

EXT_PATH =
File.expand_path("..", __FILE__).freeze
AGENT_CONFIG =
YAML.load(File.read(File.join(EXT_PATH, "agent.yml"))).freeze
OS =
chosen_os || local_os
ARCH =
"#{Gem::Platform.local.cpu}-#{OS}".freeze
CA_CERT_PATH =
File.join(EXT_PATH, "../resources/cacert.pem").freeze

Instance Method Summary collapse

Instance Method Details

#ext_path(path) ⇒ Object



24
25
26
# File 'ext/extconf.rb', line 24

def ext_path(path)
  File.join(EXT_PATH, path)
end

#installObject



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
# File 'ext/extconf.rb', line 39

def install
  logger.info "Installing appsignal agent #{Appsignal::VERSION} for Ruby #{RUBY_VERSION} on #{RUBY_PLATFORM}"

  if RUBY_PLATFORM =~ /java/
    installation_failed(
      "We do not support jRuby at the moment, email [email protected] if you want to join the beta"
    )
    return
  end

  unless AGENT_CONFIG["triples"].keys.include?(ARCH)
    installation_failed(
      "AppSignal currently does not support your system architecture (#{ARCH})." \
      "Please let us know at [email protected], we aim to support everything our customers run."
    )
    return
  end

  arch_config = AGENT_CONFIG["triples"][ARCH]

  unless File.exist?(ext_path("appsignal-agent")) &&
      File.exist?(ext_path("libappsignal.a")) &&
      File.exist?(ext_path("appsignal.h"))
    logger.info "Downloading agent release from #{arch_config["download_url"]}"

    archive = open(arch_config["download_url"], :ssl_ca_cert => CA_CERT_PATH)

    if Digest::SHA256.hexdigest(archive.read) == arch_config["checksum"]
      logger.info "Checksum of downloaded archive verified, extracting archive"
    else
      installation_failed(
        "Aborting installation, checksum of downloaded archive could not be verified: " \
        "Expected '#{arch_config["checksum"]}', got '#{checksum}'."
      )
      return
    end

    Gem::Package::TarReader.new(Zlib::GzipReader.open(archive)) do |tar|
      tar.each do |entry|
        next unless entry.file?

        File.open(ext_path(entry.full_name), "wb") do |f|
          f.write(entry.read)
        end
      end
    end
    FileUtils.chmod(0o755, ext_path("appsignal-agent"))
  end

  logger.info "Creating makefile"
  require "mkmf"
  if !have_library("appsignal", "appsignal_start", "appsignal.h")
    installation_failed "Aborting installation, libappsignal.a or appsignal.h not found"
  elsif !find_executable("appsignal-agent", EXT_PATH)
    installation_failed "Aborting installation, appsignal-agent not found"
  else
    create_makefile "appsignal_extension"
    logger.info "Successfully created Makefile for appsignal extension"
  end
rescue => ex
  installation_failed "Exception while installing: #{ex}"
  ex.backtrace.each do |line|
    logger.error line
  end
end

#installation_failed(reason) ⇒ Object



32
33
34
35
36
37
# File 'ext/extconf.rb', line 32

def installation_failed(reason)
  logger.error "Installation failed: #{reason}"
  File.open(File.join(EXT_PATH, "Makefile"), "w") do |file|
    file.write "default:\nclean:\ninstall:"
  end
end

#loggerObject



28
29
30
# File 'ext/extconf.rb', line 28

def logger
  @logger ||= Logger.new(File.join(EXT_PATH, "install.log"))
end