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Migrate Repository Resources to the Go SDK#1457

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Merged
omgitsads merged 7 commits intoomgitsads/go-sdkfromomgitsads/go-sdk-repo-resources
Nov 20, 2025
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2 changes: 1 addition & 1 deletiongo.mod
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Original file line numberDiff line numberDiff line change
Expand Up@@ -53,7 +53,7 @@ require (
github.com/spf13/cast v1.10.0 // indirect
github.com/spf13/pflag v1.0.10
github.com/subosito/gotenv v1.6.0 // indirect
github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
github.com/yosida95/uritemplate/v3 v3.0.2
golang.org/x/oauth2 v0.30.0 // indirect
golang.org/x/sys v0.31.0 // indirect
golang.org/x/text v0.28.0 // indirect
Expand Down
174 changes: 101 additions & 73 deletionspkg/github/repository_resource.go
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Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
package github

import (
"bytes"
"context"
"encoding/base64"
"errors"
Expand All@@ -15,107 +16,120 @@ import (
"github.com/github/github-mcp-server/pkg/raw"
"github.com/github/github-mcp-server/pkg/translations"
"github.com/google/go-github/v79/github"
"github.com/mark3labs/mcp-go/mcp"
"github.com/mark3labs/mcp-go/server"
"github.com/modelcontextprotocol/go-sdk/mcp"
"github.com/yosida95/uritemplate/v3"
)

var (
repositoryResourceContentURITemplate = uritemplate.MustNew("repo://{owner}/{repo}/contents{/path*}")
repositoryResourceBranchContentURITemplate = uritemplate.MustNew("repo://{owner}/{repo}/refs/heads/{branch}/contents{/path*}")
repositoryResourceCommitContentURITemplate = uritemplate.MustNew("repo://{owner}/{repo}/sha/{sha}/contents{/path*}")
repositoryResourceTagContentURITemplate = uritemplate.MustNew("repo://{owner}/{repo}/refs/tags/{tag}/contents{/path*}")
repositoryResourcePrContentURITemplate = uritemplate.MustNew("repo://{owner}/{repo}/refs/pull/{prNumber}/head/contents{/path*}")
)

// GetRepositoryResourceContent defines the resource template and handler for getting repository content.
func GetRepositoryResourceContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, server.ResourceTemplateHandlerFunc) {
return mcp.NewResourceTemplate(
"repo://{owner}/{repo}/contents{/path*}", // Resource template
t("RESOURCE_REPOSITORY_CONTENT_DESCRIPTION", "Repository Content"),
),
RepositoryResourceContentsHandler(getClient, getRawClient)
func GetRepositoryResourceContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, mcp.ResourceHandler) {
return mcp.ResourceTemplate{
Name: "repository_content",
URITemplate: repositoryResourceContentURITemplate.Raw(), // Resource template
Description: t("RESOURCE_REPOSITORY_CONTENT_DESCRIPTION", "Repository Content"),
},
RepositoryResourceContentsHandler(getClient, getRawClient, repositoryResourceContentURITemplate)
}

// GetRepositoryResourceBranchContent defines the resource template and handler for getting repository content for a branch.
func GetRepositoryResourceBranchContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, server.ResourceTemplateHandlerFunc) {
return mcp.NewResourceTemplate(
"repo://{owner}/{repo}/refs/heads/{branch}/contents{/path*}", // Resource template
t("RESOURCE_REPOSITORY_CONTENT_BRANCH_DESCRIPTION", "Repository Content for specific branch"),
),
RepositoryResourceContentsHandler(getClient, getRawClient)
func GetRepositoryResourceBranchContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, mcp.ResourceHandler) {
return mcp.ResourceTemplate{
Name: "repository_content_branch",
URITemplate: repositoryResourceBranchContentURITemplate.Raw(), // Resource template
Description: t("RESOURCE_REPOSITORY_CONTENT_BRANCH_DESCRIPTION", "Repository Content for specific branch"),
},
RepositoryResourceContentsHandler(getClient, getRawClient, repositoryResourceBranchContentURITemplate)
}

// GetRepositoryResourceCommitContent defines the resource template and handler for getting repository content for a commit.
func GetRepositoryResourceCommitContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, server.ResourceTemplateHandlerFunc) {
return mcp.NewResourceTemplate(
"repo://{owner}/{repo}/sha/{sha}/contents{/path*}", // Resource template
t("RESOURCE_REPOSITORY_CONTENT_COMMIT_DESCRIPTION", "Repository Content for specific commit"),
),
RepositoryResourceContentsHandler(getClient, getRawClient)
func GetRepositoryResourceCommitContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, mcp.ResourceHandler) {
return mcp.ResourceTemplate{
Name: "repository_content_commit",
URITemplate: repositoryResourceCommitContentURITemplate.Raw(), // Resource template
Description: t("RESOURCE_REPOSITORY_CONTENT_COMMIT_DESCRIPTION", "Repository Content for specific commit"),
},
RepositoryResourceContentsHandler(getClient, getRawClient, repositoryResourceCommitContentURITemplate)
}

// GetRepositoryResourceTagContent defines the resource template and handler for getting repository content for a tag.
func GetRepositoryResourceTagContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, server.ResourceTemplateHandlerFunc) {
return mcp.NewResourceTemplate(
"repo://{owner}/{repo}/refs/tags/{tag}/contents{/path*}", // Resource template
t("RESOURCE_REPOSITORY_CONTENT_TAG_DESCRIPTION", "Repository Content for specific tag"),
),
RepositoryResourceContentsHandler(getClient, getRawClient)
func GetRepositoryResourceTagContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, mcp.ResourceHandler) {
return mcp.ResourceTemplate{
Name: "repository_content_tag",
URITemplate: repositoryResourceTagContentURITemplate.Raw(), // Resource template
Description: t("RESOURCE_REPOSITORY_CONTENT_TAG_DESCRIPTION", "Repository Content for specific tag"),
},
RepositoryResourceContentsHandler(getClient, getRawClient, repositoryResourceTagContentURITemplate)
}

// GetRepositoryResourcePrContent defines the resource template and handler for getting repository content for a pull request.
func GetRepositoryResourcePrContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, server.ResourceTemplateHandlerFunc) {
return mcp.NewResourceTemplate(
"repo://{owner}/{repo}/refs/pull/{prNumber}/head/contents{/path*}", // Resource template
t("RESOURCE_REPOSITORY_CONTENT_PR_DESCRIPTION", "Repository Content for specific pull request"),
),
RepositoryResourceContentsHandler(getClient, getRawClient)
func GetRepositoryResourcePrContent(getClient GetClientFn, getRawClient raw.GetRawClientFn, t translations.TranslationHelperFunc) (mcp.ResourceTemplate, mcp.ResourceHandler) {
return mcp.ResourceTemplate{
Name: "repository_content_pr",
URITemplate: repositoryResourcePrContentURITemplate.Raw(), // Resource template
Description: t("RESOURCE_REPOSITORY_CONTENT_PR_DESCRIPTION", "Repository Content for specific pull request"),
},
RepositoryResourceContentsHandler(getClient, getRawClient, repositoryResourcePrContentURITemplate)
}

// RepositoryResourceContentsHandler returns a handler function for repository content requests.
func RepositoryResourceContentsHandler(getClient GetClientFn, getRawClient raw.GetRawClientFn) func(ctx context.Context, request mcp.ReadResourceRequest) ([]mcp.ResourceContents, error) {
return func(ctx context.Context, request mcp.ReadResourceRequest) ([]mcp.ResourceContents, error) {
// the matcher will give []string with one element
// https://github.com/mark3labs/mcp-go/pull/54
o, ok := request.Params.Arguments["owner"].([]string)
if !ok || len(o) == 0 {
func RepositoryResourceContentsHandler(getClient GetClientFn, getRawClient raw.GetRawClientFn, resourceURITemplate *uritemplate.Template) mcp.ResourceHandler {
return func(ctx context.Context, request *mcp.ReadResourceRequest) (*mcp.ReadResourceResult, error) {
// Match the URI to extract parameters
uriValues := resourceURITemplate.Match(request.Params.URI)
if uriValues == nil {
return nil, fmt.Errorf("failed to match URI: %s", request.Params.URI)
}

// Extract required vars
owner := uriValues.Get("owner").String()
repo := uriValues.Get("repo").String()

if owner == "" {
return nil, errors.New("owner is required")
}
owner := o[0]

r, ok := request.Params.Arguments["repo"].([]string)
if !ok || len(r) == 0 {
if repo == "" {
return nil, errors.New("repo is required")
}
repo := r[0]

// path should be a joined list of the path parts
path := ""
p, ok := request.Params.Arguments["path"].([]string)
if ok {
path = strings.Join(p, "/")
}
path := uriValues.Get("path").String()

opts := &github.RepositoryContentGetOptions{}
rawOpts := &raw.ContentOpts{}

sha, ok:=request.Params.Arguments["sha"].([]string)
ifok && len(sha) > 0 {
opts.Ref = sha[0]
rawOpts.SHA = sha[0]
sha:=uriValues.Get("sha").String()
if sha != "" {
opts.Ref = sha
rawOpts.SHA = sha
}

branch, ok:=request.Params.Arguments["branch"].([]string)
ifok && len(branch) > 0 {
opts.Ref = "refs/heads/" + branch[0]
rawOpts.Ref = "refs/heads/" + branch[0]
branch:=uriValues.Get("branch").String()
if branch != "" {
opts.Ref = "refs/heads/" + branch
rawOpts.Ref = "refs/heads/" + branch
}

tag, ok:=request.Params.Arguments["tag"].([]string)
ifok && len(tag) > 0 {
opts.Ref = "refs/tags/" + tag[0]
rawOpts.Ref = "refs/tags/" + tag[0]
tag:=uriValues.Get("tag").String()
if tag != "" {
opts.Ref = "refs/tags/" + tag
rawOpts.Ref = "refs/tags/" + tag
}
prNumber, ok := request.Params.Arguments["prNumber"].([]string)
if ok && len(prNumber) > 0 {

prNumber := uriValues.Get("prNumber").String()
if prNumber != "" {
// fetch the PR from the API to get the latest commit and use SHA
githubClient, err := getClient(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get GitHub client: %w", err)
}
prNum, err := strconv.Atoi(prNumber[0])
prNum, err := strconv.Atoi(prNumber)
if err != nil {
return nil, fmt.Errorf("invalid pull request number: %w", err)
}
Expand DownExpand Up@@ -161,19 +175,33 @@ func RepositoryResourceContentsHandler(getClient GetClientFn, getRawClient raw.G

switch {
case strings.HasPrefix(mimeType, "text"), strings.HasPrefix(mimeType, "application"):
return []mcp.ResourceContents{
mcp.TextResourceContents{
URI: request.Params.URI,
MIMEType: mimeType,
Text: string(content),
return &mcp.ReadResourceResult{
Contents: []*mcp.ResourceContents{
{
URI: request.Params.URI,
MIMEType: mimeType,
Text: string(content),
},
},
}, nil
default:
return []mcp.ResourceContents{
mcp.BlobResourceContents{
URI: request.Params.URI,
MIMEType: mimeType,
Blob: base64.StdEncoding.EncodeToString(content),
var buf bytes.Buffer
base64Encoder := base64.NewEncoder(base64.StdEncoding, &buf)
_, err := base64Encoder.Write(content)
if err != nil {
return nil, fmt.Errorf("failed to base64 encode content: %w", err)
}
if err := base64Encoder.Close(); err != nil {
return nil, fmt.Errorf("failed to close base64 encoder: %w", err)
}

return &mcp.ReadResourceResult{
Contents: []*mcp.ResourceContents{
{
URI: request.Params.URI,
MIMEType: mimeType,
Blob: buf.Bytes(),
},
},
}, nil
}
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