Packer Plugin SDK enables building Packer plugins (builders, provisioners, or post-processors) to manage any service providers or custom in-house solutions
Mozilla Public License 2.0
32
stars
44
forks
source link
[Feature Branch] Support protobuf/msgpack serialization for cty Values #229
This PR aims to be a PoC/base for later developments on the wire-protocol for all the components that plugin expose.
We introduce a protobuf-serialisable data structure for hcldec.HCLSpec, which is used by all components of a plugin for describing the schema of what the plugin uses, and offers Packer a type to use to decode cty values from HCL code.
In doing so, we also explored using alternative serialisation formats for datasources, which were the only components leveraging cty's gob serialisation capabilities, and replace them with JSON/msgpack.
These changes make the SDK capable to communicate over-the-wire on recent hcl/cty versions, without needing to use the fork/replace for gob support.
This PR aims to be a PoC/base for later developments on the wire-protocol for all the components that plugin expose.
We introduce a protobuf-serialisable data structure for
hcldec.HCLSpec, which is used by all components of a plugin for describing the schema of what the plugin uses, and offers Packer a type to use to decode cty values from HCL code.In doing so, we also explored using alternative serialisation formats for datasources, which were the only components leveraging cty's gob serialisation capabilities, and replace them with JSON/msgpack.
These changes make the SDK capable to communicate over-the-wire on recent hcl/cty versions, without needing to use the fork/replace for gob support.