Bulid OS-specific plugin objects

[mssalvatore]

Description

Plugins that can be run from more than one host OS may require different dependencies. This is commonly the case with compiled/extension modules. When an agent requests a plugin from the Island, it needs to receive a plugin that is compatible with its OS.

To achieve this, plugins may be packaged with multiple vendor/ directories. The Island will repackage the plugin when it is requested by the agent. A plugin's source_archive should contain vendor/ XOR (vendor-linux/ or vendor-windows/). When the Island parses the plugin, it can repackage the source_archive so that it contains only the vendor directory for a single host OS.

To clarify: The agent expects the source_archive to contain vendor/ only. The Island will need to parse the source_archive it's provided, rename OS-specific vendor directories, and produce multiple plugins whose source archives contain the correct vendor directory.

Tasks

Merge PRs to the 2811-os-specific-plugins branch.

• Add host_operating_systems: Tuple[OperatingSystem, ...] to AgentPlugin (Refactor 2811-os-specific-plugins branch) - (0d) @shreyamalviya
• Rework the plugin parser to return Mapping[OperatingSystem, AgentPlugin] (0d) @shreyamalviya
  • Produce new TarFile object(s) containing plugin.py, any other source code, and a single vendor/ directory
  • If plugin.tar contains vendor/ return Mapping[OperatingSystem, AgentPlugin] where the AgentPlugin is the same instance
  • If plugin.tar does not contain vendor/, return a dict with one AgentPlugin per vendor-[OS] where the AgentPlugin instances are OS-specific
• Refactor IAgentPluginRepository.get_plugin(self, host_operating_system: OperatingSystem, plugin_type: AgentPluginType, name: str) (0d) @cakekoa
  • Return a plugin that matches host_operating_system
• Refactor the /api/agent-plugins/OS/TYPE/NAME endpoint to accept an OS in URL(0d) @cakekoa
• Refactor IIslandAPIClient and HTTPIslandAPIClient.get_agent_plugin() to match IAgentPluginRepository.get_plugin() (0d) @mssalvatore
• Refactor the PluginRegistry to request the plugin for the host OS (0d) @mssalvatore
• Create a new mock plugin with OS-specific vendor directories and test everything end-to-end (0d) - @shreyamalviya