0ad9a89d97
## Motivation and Context MCP 2025-11-25 spec defines a `_meta` general field on many types, but the Ruby SDK only exposed it on `Tool` and `Prompt`. To attach metadata (e.g. MCP Apps CSP hints on resource contents), consumers had to subclass existing classes and override `to_h`. Add a `meta:` keyword argument and `_meta` serialization to: - `Resource::Contents`, `Resource::TextContents`, `Resource::BlobContents` - `Resource`, `ResourceTemplate` - `Content::Text`, `Content::Image`, `Content::Audio`, `Content::EmbeddedResource` - `Tool::Response` (`CallToolResult`) - `Prompt::Result` (`GetPromptResult`) This aligns the Ruby SDK with the Python and TypeScript SDKs, which both expose `_meta` on these types. Resolves #308. ## How Has This Been Tested? Added unit tests for each updated class covering two patterns: `_meta` present (asserts the value is reflected in `to_h[:_meta]`) and `_meta` omitted (asserts no `:_meta` key in `to_h`, i.e., `.compact` behavior). All existing tests continue to pass, and `rake rubocop` is clean. ## Breaking Changes None. All new `meta:` parameters are optional keyword arguments defaulting to `nil`. The `to_h` output stays backward-compatible because `nil` values are removed by the existing `.compact` call, so existing callers require no changes.
45 lines
907 B
Ruby
45 lines
907 B
Ruby
# frozen_string_literal: true
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module MCP
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class Resource
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class Contents
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attr_reader :uri, :mime_type, :meta
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def initialize(uri:, mime_type: nil, meta: nil)
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@uri = uri
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@mime_type = mime_type
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@meta = meta
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end
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def to_h
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{ uri: uri, mimeType: mime_type, _meta: meta }.compact
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end
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end
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class TextContents < Contents
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attr_reader :text
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def initialize(text:, uri:, mime_type:, meta: nil)
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super(uri: uri, mime_type: mime_type, meta: meta)
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@text = text
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end
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def to_h
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super.merge(text: text)
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end
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end
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class BlobContents < Contents
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attr_reader :data
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def initialize(data:, uri:, mime_type:, meta: nil)
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super(uri: uri, mime_type: mime_type, meta: meta)
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@data = data
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end
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def to_h
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super.merge(blob: data)
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end
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end
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end
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end
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