[LFXV2-919] Add date range filtering support to query service endpoints

CLAUDE.md

@@ -111,6 +111,50 @@ Environment variables control implementation selection:
 - Integration tests can switch between real and mock implementations
 - Test files follow `*_test.go` pattern alongside implementation files
 
+<<<<<<< HEAD
+## API Features
+
+### Date Range Filtering
+
+The query service supports filtering resources by date ranges on fields within the `data` object.
+
+**Query Parameters:**
+
+- `date_field` (string, optional): Date field to filter on (automatically prefixed with `"data."`)
+- `date_from` (string, optional): Start date (inclusive, gte operator)
+- `date_to` (string, optional): End date (inclusive, lte operator)
+
+**Supported Date Formats:**
+
+1. **ISO 8601 datetime**: `2025-01-10T15:30:00Z` (time used as provided)
+2. **Date-only**: `2025-01-10` (converted to start/end of day UTC)
+   - `date_from` → `2025-01-10T00:00:00Z` (start of day)
+   - `date_to` → `2025-01-10T23:59:59Z` (end of day)
+
+**Examples:**
+
+```bash
+# Date range with date-only format
+GET /query/resources?v=1&date_field=updated_at&date_from=2025-01-10&date_to=2025-01-28
+
+# Date range with ISO 8601 format
+GET /query/resources?v=1&date_field=created_at&date_from=2025-01-10T15:30:00Z&date_to=2025-01-28T18:45:00Z
+
+# Open-ended range (only start date)
+GET /query/resources?v=1&date_field=created_at&date_from=2025-01-01
+
+# Combined with other filters
+GET /query/resources?v=1&type=project&tags=active&date_field=updated_at&date_from=2025-01-01&date_to=2025-03-31
+```
+
+**Implementation Details:**
+
+- Date parsing logic: `cmd/service/converters.go` (`parseDateFilter()` function)
+- Domain model: `internal/domain/model/search_criteria.go` (DateField, DateFrom, DateTo)
+- OpenSearch query: `internal/infrastructure/opensearch/template.go` (range query with gte/lte)
+- API design: `design/query-svc.go` (Goa design specification)
+- Test coverage: `cmd/service/converters_test.go` (17 comprehensive test cases)
+=======
 ## CEL Filter Feature
 
 The service supports Common Expression Language (CEL) filtering for post-query resource filtering.
@@ -183,3 +227,4 @@ service := service.NewResourceSearch(mockSearcher, mockAccessChecker, mockFilter
 ### Important Limitations
 
 **Pagination**: CEL filters apply only to results from each OpenSearch page. If the target resource is not in the first page of OpenSearch results, it won't be found even if it matches the CEL filter. Always use specific primary search criteria (`type`, `name`, `parent`) to narrow OpenSearch results first.
+>>>>>>> 3e45fc4d33aba656a5abe1c3df0d3f2bd0fd6be7

README.md

@@ -214,9 +214,17 @@ Authorization: Bearer <jwt_token>
 - `name`: Resource name or alias (supports typeahead search)
 - `type`: Resource type to filter by
 - `parent`: Parent resource for hierarchical queries
+<<<<<<< HEAD
+- `tags`: Array of tags to filter by (OR logic - matches resources with any of these tags)
+- `tags_all`: Array of tags to filter by (AND logic - matches resources that have all of these tags)
+- `date_field`: Date field to filter on (within data object) - used with date_from and/or date_to
+- `date_from`: Start date (inclusive). Format: ISO 8601 datetime or date-only (YYYY-MM-DD). Date-only uses start of day UTC
+- `date_to`: End date (inclusive). Format: ISO 8601 datetime or date-only (YYYY-MM-DD). Date-only uses end of day UTC
+=======
 - `tags`: Array of tags to filter by (OR logic)
 - `tags_all`: Array of tags where all must match (AND logic)
 - `cel_filter`: CEL expression for advanced post-query filtering (see [CEL Filter](#cel-filter) section)
+>>>>>>> 3e45fc4d33aba656a5abe1c3df0d3f2bd0fd6be7
 - `sort`: Sort order (name_asc, name_desc, updated_asc, updated_desc)
 - `page_token`: Pagination token
 - `v`: API version (required)
@@ -241,6 +249,46 @@ Authorization: Bearer <jwt_token>
 }
 ```
 
+<<<<<<< HEAD
+**Date Range Filtering Examples:**
+
+Filter resources updated between two dates (date-only format):
+
+```bash
+GET /query/resources?v=1&date_field=updated_at&date_from=2025-01-10&date_to=2025-01-28
+Authorization: Bearer <jwt_token>
+```
+
+Filter resources with precise datetime filtering (ISO 8601 format):
+
+```bash
+GET /query/resources?v=1&date_field=created_at&date_from=2025-01-10T15:30:00Z&date_to=2025-01-28T18:45:00Z
+Authorization: Bearer <jwt_token>
+```
+
+Filter resources created after a specific date (open-ended range):
+
+```bash
+GET /query/resources?v=1&date_field=created_at&date_from=2025-01-01
+Authorization: Bearer <jwt_token>
+```
+
+Combine date filtering with other parameters:
+
+```bash
+GET /query/resources?v=1&type=project&tags=active&date_field=updated_at&date_from=2025-01-01&date_to=2025-03-31
+Authorization: Bearer <jwt_token>
+```
+
+**Date Format Notes:**
+
+- **ISO 8601 datetime format**: `2025-01-10T15:30:00Z` (time is used as provided)
+- **Date-only format**: `2025-01-10` (automatically converted to start/end of day UTC)
+  - For `date_from`: Converts to `2025-01-10T00:00:00Z` (start of day)
+  - For `date_to`: Converts to `2025-01-10T23:59:59Z` (end of day)
+- All dates are inclusive (uses `gte` and `lte` operators)
+- The `date_field` parameter is automatically prefixed with `"data."` to scope to the resource's data object
+=======
 #### CEL Filter
 
 The `cel_filter` query parameter enables advanced filtering of search results using Common Expression Language (CEL). CEL is a non-Turing complete expression language designed for safe, fast evaluation of expressions in performance-critical applications.
@@ -353,6 +401,7 @@ Invalid CEL expressions return a 400 Bad Request with details:
   "error": "filter expression failed: ERROR: <input>:1:6: Syntax error: mismatched input 'invalid' expecting {'[', '{', '(', '.', '-', '!', 'true', 'false', 'null', NUM_FLOAT, NUM_INT, NUM_UINT, STRING, BYTES, IDENTIFIER}"
 }
 ```
+>>>>>>> 3e45fc4d33aba656a5abe1c3df0d3f2bd0fd6be7
 
 #### Organization Search API
 

cmd/service/converters.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"time"
 	"strings"
 
 	querysvc "github.com/linuxfoundation/lfx-v2-query-service/gen/query_svc"
@@ -16,6 +17,42 @@ import (
 	"github.com/linuxfoundation/lfx-v2-query-service/pkg/paging"
 )
 
+// parseDateFilter parses a date string in ISO 8601 datetime or date-only format
+// and returns it normalized for OpenSearch range queries.
+// Date-only format (YYYY-MM-DD) is converted to:
+// - Start of day (00:00:00 UTC) for date_from
+// - End of day (23:59:59 UTC) for date_to
+func parseDateFilter(dateStr string, isEndDate bool) (string, error) {
+	if dateStr == "" {
+		return "", nil
+	}
+
+	// Try parsing as ISO 8601 datetime first (e.g., 2025-01-10T15:30:00Z)
+	t, err := time.Parse(time.RFC3339, dateStr)
+	if err == nil {
+		// Already in datetime format, return as-is
+		return t.Format(time.RFC3339), nil
+	}
+
+	// Try parsing as date-only (e.g., 2025-01-10)
+	t, err = time.Parse("2006-01-02", dateStr)
+	if err != nil {
+		return "", fmt.Errorf("invalid date format '%s': must be ISO 8601 datetime (2006-01-02T15:04:05Z) or date-only (2006-01-02)", dateStr)
+	}
+
+	// Convert date-only to datetime
+	if isEndDate {
+		// For end dates, use end of day (23:59:59 UTC)
+		// Note: Using 23:59:59 instead of 23:59:59.999 for simplicity and OpenSearch compatibility
+		t = time.Date(t.Year(), t.Month(), t.Day(), 23, 59, 59, 0, time.UTC)
+	} else {
+		// For start dates, use start of day (00:00:00 UTC)
+		t = time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.UTC)
+	}
+
+	return t.Format(time.RFC3339), nil
+}
+
 // parseFilters parses filter strings in "field:value" format
 // All fields are automatically prefixed with "data." to filter only within the data object
 func parseFilters(filters []string) ([]model.FieldFilter, error) {
@@ -91,6 +128,40 @@ func (s *querySvcsrvc) payloadToCriteria(ctx context.Context, p *querysvc.QueryR
 		)
 	}
 
+	// Validate date filtering parameters
+	if (p.DateFrom != nil || p.DateTo != nil) && p.DateField == nil {
+		err := fmt.Errorf("date_field is required when using date_from or date_to")
+		slog.ErrorContext(ctx, "invalid date filter parameters", "error", err)
+		return criteria, wrapError(ctx, err)
+	}
+
+	// Handle date filtering parameters
+	if p.DateField != nil {
+		// Auto-prefix with "data." to scope to data object
+		prefixedField := "data." + *p.DateField
+		criteria.DateField = &prefixedField
+
+		// Parse and normalize date_from
+		if p.DateFrom != nil {
+			normalizedFrom, err := parseDateFilter(*p.DateFrom, false)
+			if err != nil {
+				slog.ErrorContext(ctx, "invalid date_from format", "error", err, "date_from", *p.DateFrom)
+				return criteria, wrapError(ctx, err)
+			}
+			criteria.DateFrom = &normalizedFrom
+		}
+
+		// Parse and normalize date_to
+		if p.DateTo != nil {
+			normalizedTo, err := parseDateFilter(*p.DateTo, true)
+			if err != nil {
+				slog.ErrorContext(ctx, "invalid date_to format", "error", err, "date_to", *p.DateTo)
+				return criteria, wrapError(ctx, err)
+			}
+			criteria.DateTo = &normalizedTo
+		}
+	}
+
 	return criteria, nil
 }
 
@@ -146,6 +217,36 @@ func (s *querySvcsrvc) payloadToCountPublicCriteria(payload *querysvc.QueryResou
 		criteria.ParentRef = payload.Parent
 	}
 
+	// Validate date filtering parameters
+	if (payload.DateFrom != nil || payload.DateTo != nil) && payload.DateField == nil {
+		return criteria, fmt.Errorf("date_field is required when using date_from or date_to")
+	}
+
+	// Handle date filtering parameters
+	if payload.DateField != nil {
+		// Auto-prefix with "data." to scope to data object
+		prefixedField := "data." + *payload.DateField
+		criteria.DateField = &prefixedField
+
+		// Parse and normalize date_from
+		if payload.DateFrom != nil {
+			normalizedFrom, err := parseDateFilter(*payload.DateFrom, false)
+			if err != nil {
+				return criteria, fmt.Errorf("invalid date_from: %w", err)
+			}
+			criteria.DateFrom = &normalizedFrom
+		}
+
+		// Parse and normalize date_to
+		if payload.DateTo != nil {
+			normalizedTo, err := parseDateFilter(*payload.DateTo, true)
+			if err != nil {
+				return criteria, fmt.Errorf("invalid date_to: %w", err)
+			}
+			criteria.DateTo = &normalizedTo
+		}
+	}
+
 	return criteria, nil
 }
 
@@ -182,6 +283,36 @@ func (s *querySvcsrvc) payloadToCountAggregationCriteria(payload *querysvc.Query
 		criteria.ParentRef = payload.Parent
 	}
 
+	// Validate date filtering parameters
+	if (payload.DateFrom != nil || payload.DateTo != nil) && payload.DateField == nil {
+		return criteria, fmt.Errorf("date_field is required when using date_from or date_to")
+	}
+
+	// Handle date filtering parameters
+	if payload.DateField != nil {
+		// Auto-prefix with "data." to scope to data object
+		prefixedField := "data." + *payload.DateField
+		criteria.DateField = &prefixedField
+
+		// Parse and normalize date_from
+		if payload.DateFrom != nil {
+			normalizedFrom, err := parseDateFilter(*payload.DateFrom, false)
+			if err != nil {
+				return criteria, fmt.Errorf("invalid date_from: %w", err)
+			}
+			criteria.DateFrom = &normalizedFrom
+		}
+
+		// Parse and normalize date_to
+		if payload.DateTo != nil {
+			normalizedTo, err := parseDateFilter(*payload.DateTo, true)
+			if err != nil {
+				return criteria, fmt.Errorf("invalid date_to: %w", err)
+			}
+			criteria.DateTo = &normalizedTo
+		}
+	}
+
 	return criteria, nil
 }