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hd-deman

ArtifactHub MCP Server

by hd-deman

helm-chart-values-fuzzy-search

Search Helm chart values.yaml files using fuzzy matching to find properties, values, and comments across ArtifactHub repositories.

Instructions

Fuzzy search through all properties/values/comments in a Helm chart's values.yaml file

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
chartRepoYesThe Helm chart repository name
chartNameYesThe Helm chart name
searchQueryYesThe search query for fuzzy matching
versionNoThe chart version (optional, defaults to latest)

Implementation Reference

  • The handler function implementing the fuzzy search logic for Helm chart values using Fuse.js.
    	async ({
    		chartRepo,
    		chartName,
    		searchQuery,
    		version,
    	}: FuzzySearchParams) => {
    		try {
    			let packageId: string;
    			let chartVersion: string;
    
    			// First get the chart info
    			const chartInfo = await getChartInfo(chartRepo, chartName);
    			packageId = chartInfo.package_id;
    
    			// If version is not provided, use the latest version
    			chartVersion = version || chartInfo.version;
    
    			// Get the values.yaml
    			const valuesYaml = await getChartValues(packageId, chartVersion);
    
    			// Parse YAML to get the value
    			const parsedYaml = parse(valuesYaml);
    			const doc = parseDocument(valuesYaml);
    
    			// Collect all properties recursively
    			const allProperties = collectPropertiesRecursive(parsedYaml, "", doc);
    
    			// Set up Fuse.js for fuzzy searching
    			const fuse = new Fuse(allProperties, {
    				keys: ["propertyName", "propertyPath", "comment", "value"],
    				includeScore: true,
    				threshold: 0.4,
    			});
    
    			// Perform the fuzzy search
    			const searchResults = fuse.search(searchQuery);
    
    			// Format the results
    			let responseText = "";
    			if (searchResults.length > 0) {
    				responseText = `# Found ${searchResults.length} matching properties:\n\n`;
    
    				searchResults.forEach((result, index) => {
    					const property = result.item;
    					responseText += `## ${index + 1}. ${property.propertyPath}\n`;
    
    					if (property.comment) {
    						responseText += `Comment: ${property.comment.trim()}\n`;
    					}
    
    					if (property.value !== undefined) {
    						responseText += `Value: ${
    							typeof property.value === "object"
    								? JSON.stringify(property.value, null, 2)
    								: String(property.value)
    						}\n`;
    					} else {
    						responseText += "Value: [object]\n";
    					}
    
    					responseText += "\n";
    				});
    			} else {
    				responseText = `No properties matching "${searchQuery}" found.`;
    			}
    
    			return {
    				content: [
    					{
    						type: "text",
    						text: responseText,
    					},
    				],
    			};
    		} catch (error) {
    			return {
    				content: [
    					{
    						type: "text",
    						text: `Error performing fuzzy search: ${
    							(error as Error).message
    						}`,
    					},
    				],
    			};
    		}
    	}
    );
  • The registration of the tool "helm-chart-values-fuzzy-search" with its schema definition using Zod.
    return server.tool(
    	"helm-chart-values-fuzzy-search",
    	"Fuzzy search through all properties/values/comments in a Helm chart's values.yaml file",
    	{
    		chartRepo: z.string().describe("The Helm chart repository name"),
    		chartName: z.string().describe("The Helm chart name"),
    		searchQuery: z.string().describe("The search query for fuzzy matching"),
    		version: z
    			.string()
    			.optional()
    			.describe("The chart version (optional, defaults to latest)"),
    	},
  • Helper function to recursively collect properties and comments from a YAML object.
    function collectPropertiesRecursive(
    	obj: any,
    	currentPath = "",
    	doc: any,
    	result: ValueProperty[] = []
    ): ValueProperty[] {
    	if (obj === null || typeof obj !== "object") {
    		return result;
    	}
    
    	for (const key in obj) {
    		const value = obj[key];
    		const newPath = currentPath ? `${currentPath}.${key}` : key;
    
    		// Try to extract comment for this property
    		let comment: string | undefined = undefined;
    		try {
    			// Navigate through the document to find comments
    			let currentNode = doc.contents;
    			for (const part of newPath.split(".")) {
    				if (
    					currentNode &&
    					typeof currentNode === "object" &&
    					"get" in currentNode
    				) {
    					const node = currentNode.get(part);
    					if (node) {
    						if (node.commentBefore) {
    							comment = node.commentBefore;
    						}
    						currentNode = node;
    					} else {
    						break;
    					}
    				} else {
    					break;
    				}
    			}
    		} catch (e) {
    			// If we can't get comments, just ignore and continue
    		}
    
    		// Add property to result
    		const property: ValueProperty = {
    			propertyName: key,
    			propertyPath: newPath,
    			comment,
    		};
    
    		// Only add value if it's not an object
    		if (value === null || typeof value !== "object") {
    			property.value = value;
    		}
    
    		result.push(property);
    
    		// Recursively process nested objects
    		if (value !== null && typeof value === "object") {
    			collectPropertiesRecursive(value, newPath, doc, result);
    		}
    	}
    
    	return result;
    }

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