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Versions: 30
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Contents
# Simpler than Terraspace::Terraform::Runner::Backend::Parser because
# Terraspace::Compiler::Expander autodetect backend super early on.
# It's so early that don't want helper methods like <%= expansion(...) %> to be called.
# Calling the expansion helper itself results in Terraspace autodetecting a concrete
# Terraspace Plugin Expander, which creates an infinite loop.
# This simple detection class avoids calling ERB and avoids the infinite loop.
class Terraspace::Compiler::Expander
class Backend
extend Memoist
def initialize(mod)
@mod = mod
end
COMMENT = /^\s*#/
# Works for both backend.rb DSL and backend.tf ERB
def detect
return nil unless src_path # no backend file. returning nil means a local backend
lines = IO.readlines(src_path)
backend_line = lines.find { |l| l.include?("backend") && l !~ COMMENT }
md = backend_line.match(/['"](.*)['"]/)
md[1] if md
end
private
# Use original unrendered source as wont know the
# @mod.cache_dir = ":REGION/:ENV/:BUILD_DIR"
# Until the concrete Terraspace Plugin Expander has been autodetected.
# Follow same precedence rules as rest of Terraspace.
def src_path
exprs = [
"app/stacks/#{@mod.build_dir}/backend.*",
"app/modules/#{@mod.build_dir}/backend.*",
"vendor/stacks/#{@mod.build_dir}/backend.*",
"vendor/modules/#{@mod.build_dir}/backend.*",
"config/terraform/backend.*",
]
path = nil
exprs.find { |expr| path = Dir.glob(expr).first }
path
end
memoize :src_path
end
end
Version data entries
30 entries across 30 versions & 1 rubygems