Documentation
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Overview ¶
Package evaluator is the core of our run-time.
Given a parsed series of statements we execute each of them in turn.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Evaluator ¶
type Evaluator struct {
// Program is our parsed program, which is an array of statements.
Program []statement.Statement
// Identity holds the SSH key to authenticate with
Identity string
// Verbose is true if the execution should be verbose.
Verbose bool
// NOP records if we should pretend to work, or work for real.
NOP bool
// Variables is a map which holds the names/values of all defined
// variables. (Being declared/set/updated via the 'Set' primitive.)
Variables map[string]string
// ROVariables is a map which is similar to Variables, but only
// contains values set on the command-line. Variables are looked
// for here first.
ROVariables map[string]string
// Connection holds the SSH-connection to the remote-host.
Connection *simplessh.Client
// Changed records whether the last copy operaton resulted in a change.
Changed bool
}
Evaluator holds our internal state.
func (*Evaluator) ConnectTo ¶
ConnectTo opens the SSH connection to the specified target-host.
If a connection is already open then it is maintained, and not replaced. This allows the command-line to override the destination which might be baked into a configuration-recipe.
func (*Evaluator) Run ¶
Run evaluates our program, continuing until all statements have been executed - unless an error was encountered.
func (*Evaluator) SetIdentity ¶
SetIdentity specifies the SSH identity file to authenticate with
func (*Evaluator) SetVariable ¶
SetVariable sets the content of a read-only variable
func (*Evaluator) SetVerbose ¶
SetVerbose specifies whether we should run verbosely or not.
Source Files