Class: Beaker::SshConnection
- Inherits:
-
Object
- Object
- Beaker::SshConnection
- Defined in:
- lib/beaker/ssh_connection.rb
Constant Summary collapse
- RETRYABLE_EXCEPTIONS =
[ SocketError, Timeout::Error, Errno::ETIMEDOUT, Errno::EHOSTDOWN, Errno::EHOSTUNREACH, Errno::ECONNREFUSED, Errno::ECONNRESET, Errno::ENETUNREACH, Net::SSH::Disconnect, Net::SSH::AuthenticationFailed, ]
Instance Attribute Summary collapse
-
#logger ⇒ Object
Returns the value of attribute logger.
Class Method Summary collapse
Instance Method Summary collapse
- #close ⇒ Object
- #connect ⇒ Object
- #execute(command, options = {}, stdout_callback = nil, stderr_callback = stdout_callback) ⇒ Object
-
#initialize(hostname, user = nil, ssh_opts = {}, options = {}) ⇒ SshConnection
constructor
A new instance of SshConnection.
- #process_stdin_for(channel, stdin) ⇒ Object
- #register_exit_code_for(channel, output) ⇒ Object
- #register_stderr_for(channel, output, callback = nil) ⇒ Object
- #register_stdout_for(channel, output, callback = nil) ⇒ Object
- #request_terminal_for(channel, command) ⇒ Object
- #scp_from(source, target, options = {}, dry_run = false) ⇒ Object
- #scp_to(source, target, options = {}, dry_run = false) ⇒ Object
- #try_to_execute(command, options = {}, stdout_callback = nil, stderr_callback = stdout_callback) ⇒ Object
Constructor Details
#initialize(hostname, user = nil, ssh_opts = {}, options = {}) ⇒ SshConnection
Returns a new instance of SshConnection.
23 24 25 26 27 28 |
# File 'lib/beaker/ssh_connection.rb', line 23 def initialize hostname, user = nil, ssh_opts = {}, = {} @hostname = hostname @user = user @ssh_opts = ssh_opts @logger = [:logger] end |
Instance Attribute Details
#logger ⇒ Object
Returns the value of attribute logger.
8 9 10 |
# File 'lib/beaker/ssh_connection.rb', line 8 def logger @logger end |
Class Method Details
.connect(hostname, user = 'root', ssh_opts = {}, options = {}) ⇒ Object
30 31 32 33 34 |
# File 'lib/beaker/ssh_connection.rb', line 30 def self.connect hostname, user = 'root', ssh_opts = {}, = {} connection = new hostname, user, ssh_opts, connection.connect connection end |
Instance Method Details
#close ⇒ Object
60 61 62 63 64 65 66 67 |
# File 'lib/beaker/ssh_connection.rb', line 60 def close begin @ssh.close if @ssh rescue @ssh.shutdown! end @ssh = nil end |
#connect ⇒ Object
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 |
# File 'lib/beaker/ssh_connection.rb', line 36 def connect try = 1 last_wait = 0 wait = 1 @ssh ||= begin Net::SSH.start(@hostname, @user, @ssh_opts) rescue *RETRYABLE_EXCEPTIONS => e if try <= 11 @logger.warn "Try #{try} -- Host #{@hostname} unreachable: #{e.}" @logger.warn "Trying again in #{wait} seconds" sleep wait (last_wait, wait) = wait, last_wait + wait try += 1 retry else # why is the logger not passed into this class? @logger.error "Failed to connect to #{@hostname}" raise end end @logger.debug "Created ssh connection to #{@hostname}, user: #{@user}, opts: #{@ssh_opts}" self end |
#execute(command, options = {}, stdout_callback = nil, stderr_callback = stdout_callback) ⇒ Object
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 |
# File 'lib/beaker/ssh_connection.rb', line 101 def execute command, = {}, stdout_callback = nil, stderr_callback = stdout_callback attempt = true begin result = try_to_execute(command, , stdout_callback, stderr_callback) rescue *RETRYABLE_EXCEPTIONS => e if attempt attempt = false @logger.error "Command execution failed, attempting to reconnect to #{@hostname}" close connect retry else raise end end result end |
#process_stdin_for(channel, stdin) ⇒ Object
156 157 158 159 160 161 162 163 164 |
# File 'lib/beaker/ssh_connection.rb', line 156 def process_stdin_for channel, stdin # queue stdin data, force it to packets, and signal eof: this # triggers action in many remote commands, notably including # 'puppet apply'. It must be sent at some point before the rest # of the action. channel.send_data stdin.to_s channel.process channel.eof! end |
#register_exit_code_for(channel, output) ⇒ Object
150 151 152 153 154 |
# File 'lib/beaker/ssh_connection.rb', line 150 def register_exit_code_for channel, output channel.on_request("exit-status") do |ch, data| output.exit_code = data.read_long end end |
#register_stderr_for(channel, output, callback = nil) ⇒ Object
140 141 142 143 144 145 146 147 148 |
# File 'lib/beaker/ssh_connection.rb', line 140 def register_stderr_for channel, output, callback = nil channel.on_extended_data do |ch, type, data| if type == 1 callback[data] if callback output.stderr << data output.output << data end end end |
#register_stdout_for(channel, output, callback = nil) ⇒ Object
132 133 134 135 136 137 138 |
# File 'lib/beaker/ssh_connection.rb', line 132 def register_stdout_for channel, output, callback = nil channel.on_data do |ch, data| callback[data] if callback output.stdout << data output.output << data end end |
#request_terminal_for(channel, command) ⇒ Object
121 122 123 124 125 126 127 128 129 130 |
# File 'lib/beaker/ssh_connection.rb', line 121 def request_terminal_for channel, command channel.request_pty do |ch, success| if success @logger.info "Allocated a PTY on #{@hostname} for #{command.inspect}" else abort "FAILED: could not allocate a pty when requested on " + "#{@hostname} for #{command.inspect}" end end end |
#scp_from(source, target, options = {}, dry_run = false) ⇒ Object
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 |
# File 'lib/beaker/ssh_connection.rb', line 191 def scp_from source, target, = {}, dry_run = false return if dry_run local_opts = .dup if local_opts[:recursive].nil? local_opts[:recursive] = true end local_opts[:chunk_size] ||= 16384 result = Result.new(@hostname, [source, target]) result.stdout = "\n" @ssh.scp.download! source, target, local_opts do |ch, name, sent, total| result.stdout << "\tcopying %s: %10d/%d\n" % [name, sent, total] end # Setting these values allows reporting via result.log(test_name) result.stdout << " SCP'ed file #{@hostname}:#{source} to #{target}" # Net::Scp always returns 0, so just set the return code to 0. result.exit_code = 0 result.finalize! result end |
#scp_to(source, target, options = {}, dry_run = false) ⇒ Object
166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 |
# File 'lib/beaker/ssh_connection.rb', line 166 def scp_to source, target, = {}, dry_run = false return if dry_run local_opts = .dup if local_opts[:recursive].nil? local_opts[:recursive] = File.directory?(source) end local_opts[:chunk_size] ||= 16384 result = Result.new(@hostname, [source, target]) result.stdout = "\n" @ssh.scp.upload! source, target, local_opts do |ch, name, sent, total| result.stdout << "\tcopying %s: %10d/%d\n" % [name, sent, total] end # Setting these values allows reporting via result.log(test_name) result.stdout << " SCP'ed file #{source} to #{@hostname}:#{target}" # Net::Scp always returns 0, so just set the return code to 0. result.exit_code = 0 result.finalize! return result end |
#try_to_execute(command, options = {}, stdout_callback = nil, stderr_callback = stdout_callback) ⇒ Object
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 |
# File 'lib/beaker/ssh_connection.rb', line 69 def try_to_execute command, = {}, stdout_callback = nil, stderr_callback = stdout_callback result = Result.new(@hostname, command) # why are we getting to this point on a dry run anyways? # also... the host creates connections through the class method, # which automatically connects, so you can't do a dry run unless you also # can connect to your hosts? return result if [:dry_run] @ssh.open_channel do |channel| request_terminal_for( channel, command ) if [:pty] channel.exec(command) do |terminal, success| abort "FAILED: to execute command on a new channel on #{@hostname}" unless success register_stdout_for terminal, result, stdout_callback register_stderr_for terminal, result, stderr_callback register_exit_code_for terminal, result process_stdin_for( terminal, [:stdin] ) if [:stdin] end end # Process SSH activity until we stop doing that - which is when our # channel is finished with... @ssh.loop result.finalize! @logger.last_result = result result end |