Like Prometheus, but for logs.
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loki/pkg/engine/internal/executor/parse_test.go

670 lines
25 KiB

package executor
import (
"testing"
"time"
"github.com/apache/arrow-go/v18/arrow"
"github.com/apache/arrow-go/v18/arrow/memory"
"github.com/stretchr/testify/require"
"github.com/grafana/loki/v3/pkg/engine/internal/planner/physical"
"github.com/grafana/loki/v3/pkg/engine/internal/semconv"
"github.com/grafana/loki/v3/pkg/engine/internal/types"
"github.com/grafana/loki/v3/pkg/util/arrowtest"
)
func TestNewParsePipeline_logfmt(t *testing.T) {
var (
colTs = "timestamp_ns.builtin.timestamp"
colMsg = "utf8.builtin.message"
)
for _, tt := range []struct {
name string
schema *arrow.Schema
input arrowtest.Rows
requestedKeys []string
expectedFields int
expectedOutput arrowtest.Rows
}{
{
name: "parse stage transforms records, adding columns parsed from message",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: "level=error status=500"},
{colMsg: "level=info status=200"},
{colMsg: "level=debug status=201"},
},
requestedKeys: []string{"level", "status"},
expectedFields: 3, // 3 columns: message, level, status
expectedOutput: arrowtest.Rows{
{
colMsg: "level=error status=500",
"utf8.parsed.level": "error",
"utf8.parsed.status": "500",
},
{
colMsg: "level=info status=200",
"utf8.parsed.level": "info",
"utf8.parsed.status": "200",
},
{
colMsg: "level=debug status=201",
"utf8.parsed.level": "debug",
"utf8.parsed.status": "201",
},
},
},
{
name: "parse stage preserves existing columns",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("timestamp_ns.builtin.timestamp", true),
semconv.FieldFromFQN("utf8.builtin.message", true),
semconv.FieldFromFQN("utf8.label.app", true),
}, nil),
input: arrowtest.Rows{
{colTs: time.Unix(1, 0).UTC(), colMsg: "level=error status=500", "utf8.label.app": "frontend"},
{colTs: time.Unix(2, 0).UTC(), colMsg: "level=info status=200", "utf8.label.app": "backend"},
},
requestedKeys: []string{"level", "status"},
expectedFields: 5, // 5 columns: timestamp, message, app, level, status
expectedOutput: arrowtest.Rows{
{
colTs: time.Unix(1, 0).UTC(),
colMsg: "level=error status=500",
"utf8.label.app": "frontend",
"utf8.parsed.level": "error",
"utf8.parsed.status": "500",
},
{
colTs: time.Unix(2, 0).UTC(),
colMsg: "level=info status=200",
"utf8.label.app": "backend",
"utf8.parsed.level": "info",
"utf8.parsed.status": "200",
},
},
},
{
name: "handle missing keys with NULL",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: "level=error"},
{colMsg: "status=200"},
{colMsg: "level=info"},
},
requestedKeys: []string{"level"},
expectedFields: 2, // 2 columns: message, level
expectedOutput: arrowtest.Rows{
{
colMsg: "level=error",
"utf8.parsed.level": "error",
},
{
colMsg: "status=200",
"utf8.parsed.level": nil,
},
{
colMsg: "level=info",
"utf8.parsed.level": "info",
},
},
},
{
name: "handle errors with error columns",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: "level=info status=200"}, // No errors
{colMsg: "status==value level=error"}, // Double equals error on requested key
{colMsg: "level=\"unclosed status=500"}, // Unclosed quote error
},
requestedKeys: []string{"level", "status"},
expectedFields: 5, // 5 columns: message, level, status, __error__, __error_details__
expectedOutput: arrowtest.Rows{
{
colMsg: "level=info status=200",
"utf8.parsed.level": "info",
"utf8.parsed.status": "200",
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
{
colMsg: "status==value level=error",
"utf8.parsed.level": nil,
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): types.LogfmtParserErrorType,
semconv.ColumnIdentErrorDetails.FQN(): "logfmt syntax error at pos 8 : unexpected '='",
},
{
colMsg: "level=\"unclosed status=500",
"utf8.parsed.level": nil,
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): types.LogfmtParserErrorType,
semconv.ColumnIdentErrorDetails.FQN(): "logfmt syntax error at pos 27 : unterminated quoted value",
},
},
},
{
name: "extract all keys when none requested",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: "level=info status=200 method=GET"},
{colMsg: "level=warn code=304"},
{colMsg: "level=error status=500 method=POST duration=123ms"},
},
requestedKeys: nil, // nil means extract all keys
expectedFields: 6, // 6 columns: message, code, duration, level, method, status
expectedOutput: arrowtest.Rows{
{
colMsg: "level=info status=200 method=GET",
"utf8.parsed.code": nil,
"utf8.parsed.duration": nil,
"utf8.parsed.level": "info",
"utf8.parsed.method": "GET",
"utf8.parsed.status": "200",
},
{
colMsg: "level=warn code=304",
"utf8.parsed.code": "304",
"utf8.parsed.duration": nil,
"utf8.parsed.level": "warn",
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
},
{
colMsg: "level=error status=500 method=POST duration=123ms",
"utf8.parsed.code": nil,
"utf8.parsed.duration": "123ms",
"utf8.parsed.level": "error",
"utf8.parsed.method": "POST",
"utf8.parsed.status": "500",
},
},
},
{
name: "extract all keys with errors when none requested",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: "level=info status=200 method=GET"}, // Valid line
{colMsg: "level==error code=500"}, // Double equals error
{colMsg: "msg=\"unclosed duration=100ms code=400"}, // Unclosed quote error
{colMsg: "level=debug method=POST"}, // Valid line
},
requestedKeys: nil, // nil means extract all keys
expectedFields: 6, // 6 columns: message, level, method, status, __error__, __error_details__
expectedOutput: arrowtest.Rows{
{
colMsg: "level=info status=200 method=GET",
"utf8.parsed.level": "info",
"utf8.parsed.method": "GET",
"utf8.parsed.status": "200",
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
{
colMsg: "level==error code=500",
"utf8.parsed.level": nil,
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): types.LogfmtParserErrorType,
semconv.ColumnIdentErrorDetails.FQN(): "logfmt syntax error at pos 7 : unexpected '='",
},
{
colMsg: "msg=\"unclosed duration=100ms code=400",
"utf8.parsed.level": nil,
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): types.LogfmtParserErrorType,
semconv.ColumnIdentErrorDetails.FQN(): "logfmt syntax error at pos 38 : unterminated quoted value",
},
{
colMsg: "level=debug method=POST",
"utf8.parsed.level": "debug",
"utf8.parsed.method": "POST",
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
},
},
} {
t.Run(tt.name, func(t *testing.T) {
alloc := memory.NewCheckedAllocator(memory.DefaultAllocator)
defer alloc.AssertSize(t, 0) // Assert empty on test exit
// Create input data with message column containing logfmt
input := NewArrowtestPipeline(
alloc,
tt.schema,
tt.input,
)
// Create ParseNode requesting "level" field
parseNode := &physical.ParseNode{
Kind: physical.ParserLogfmt,
RequestedKeys: tt.requestedKeys,
}
pipeline := NewParsePipeline(parseNode, input, alloc)
// Read first record
ctx := t.Context()
record, err := pipeline.Read(ctx)
require.NoError(t, err)
defer record.Release()
// Verify the output has the expected number of fields
outputSchema := record.Schema()
require.Equal(t, tt.expectedFields, outputSchema.NumFields())
// Convert record to rows for comparison
actual, err := arrowtest.RecordRows(record)
require.NoError(t, err)
require.Equal(t, tt.expectedOutput, actual)
})
}
}
func TestNewParsePipeline_JSON(t *testing.T) {
var (
colTs = "timestamp_ns.builtin.timestamp"
colMsg = "utf8.builtin.message"
)
for _, tt := range []struct {
name string
schema *arrow.Schema
input arrowtest.Rows
requestedKeys []string
expectedFields int
expectedOutput arrowtest.Rows
}{
{
name: "parse stage transforms records, adding columns parsed from message",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"level": "error", "status": "500"}`},
{colMsg: `{"level": "info", "status": "200"}`},
{colMsg: `{"level": "debug", "status": "201"}`},
},
requestedKeys: []string{"level", "status"},
expectedFields: 3, // 3 columns: message, level, status
expectedOutput: arrowtest.Rows{
{colMsg: `{"level": "error", "status": "500"}`, "utf8.parsed.level": "error", "utf8.parsed.status": "500"},
{colMsg: `{"level": "info", "status": "200"}`, "utf8.parsed.level": "info", "utf8.parsed.status": "200"},
{colMsg: `{"level": "debug", "status": "201"}`, "utf8.parsed.level": "debug", "utf8.parsed.status": "201"},
},
},
{
name: "parse stage preserves existing columns",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("timestamp_ns.builtin.timestamp", true),
semconv.FieldFromFQN("utf8.builtin.message", true),
semconv.FieldFromFQN("utf8.label.app", true),
}, nil),
input: arrowtest.Rows{
{colTs: time.Unix(1, 0).UTC(), colMsg: `{"level": "error", "status": "500"}`, "utf8.label.app": "frontend"},
{colTs: time.Unix(2, 0).UTC(), colMsg: `{"level": "info", "status": "200"}`, "utf8.label.app": "backend"},
},
requestedKeys: []string{"level", "status"},
expectedFields: 5, // 5 columns: timestamp, message, app, level, status
expectedOutput: arrowtest.Rows{
{colTs: time.Unix(1, 0).UTC(), colMsg: `{"level": "error", "status": "500"}`, "utf8.label.app": "frontend", "utf8.parsed.level": "error", "utf8.parsed.status": "500"},
{colTs: time.Unix(2, 0).UTC(), colMsg: `{"level": "info", "status": "200"}`, "utf8.label.app": "backend", "utf8.parsed.level": "info", "utf8.parsed.status": "200"},
},
},
{
name: "handle missing keys with NULL",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"level": "error"}`},
{colMsg: `{"status": "200"}`},
{colMsg: `{"level": "info"}`},
},
requestedKeys: []string{"level"},
expectedFields: 2, // 2 columns: message, level
expectedOutput: arrowtest.Rows{
{colMsg: `{"level": "error"}`, "utf8.parsed.level": "error"},
{colMsg: `{"status": "200"}`, "utf8.parsed.level": nil},
{colMsg: `{"level": "info"}`, "utf8.parsed.level": "info"},
},
},
{
name: "handle errors with error columns",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"level": "info", "status": "200"}`}, // No errors
{colMsg: `{"level": "error", "status":`}, // Missing closing brace and value
{colMsg: `{"level": "info", "status": 200}`}, // Number should be converted to string
},
requestedKeys: []string{"level", "status"},
expectedFields: 5, // 5 columns: message, level, status, __error__, __error_details__ (due to malformed JSON)
expectedOutput: arrowtest.Rows{
{
colMsg: `{"level": "info", "status": "200"}`,
"utf8.parsed.level": "info",
"utf8.parsed.status": "200",
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
{
colMsg: `{"level": "error", "status":`,
"utf8.parsed.level": nil,
"utf8.parsed.status": nil,
semconv.ColumnIdentError.FQN(): "JSONParserErr",
semconv.ColumnIdentErrorDetails.FQN(): "Malformed JSON error",
},
{
colMsg: `{"level": "info", "status": 200}`,
"utf8.parsed.level": "info",
"utf8.parsed.status": "200",
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
},
},
{
name: "extract all keys when none requested",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"level": "info", "status": "200", "method": "GET"}`},
{colMsg: `{"level": "warn", "code": "304"}`},
{colMsg: `{"level": "error", "status": "500", "method": "POST", "duration": "123ms"}`},
},
requestedKeys: nil, // nil means extract all keys
expectedFields: 6, // 6 columns: message, code, duration, level, method, status
expectedOutput: arrowtest.Rows{
{
colMsg: `{"level": "info", "status": "200", "method": "GET"}`,
"utf8.parsed.code": nil,
"utf8.parsed.duration": nil,
"utf8.parsed.level": "info",
"utf8.parsed.method": "GET",
"utf8.parsed.status": "200",
},
{
colMsg: `{"level": "warn", "code": "304"}`,
"utf8.parsed.code": "304",
"utf8.parsed.duration": nil,
"utf8.parsed.level": "warn",
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
},
{
colMsg: `{"level": "error", "status": "500", "method": "POST", "duration": "123ms"}`,
"utf8.parsed.code": nil,
"utf8.parsed.duration": "123ms",
"utf8.parsed.level": "error",
"utf8.parsed.method": "POST",
"utf8.parsed.status": "500",
},
},
},
{
name: "extract all keys with errors when none requested",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"level": "info", "status": "200", "method": "GET"}`}, // Valid line
{colMsg: `{"level": "error", "code": 500}`}, // Also valid, adds code column
{colMsg: `{"msg": "unclosed}`}, // Unclosed quote
{colMsg: `{"level": "debug", "method": "POST"}`}, // Valid line
},
requestedKeys: nil, // nil means extract all keys
expectedFields: 7, // 7 columns: message, level, method, status, code, __error__, __error_details__
expectedOutput: arrowtest.Rows{
{
colMsg: `{"level": "info", "status": "200", "method": "GET"}`,
"utf8.parsed.level": "info",
"utf8.parsed.method": "GET",
"utf8.parsed.status": "200",
"utf8.parsed.code": nil,
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
{
colMsg: `{"level": "error", "code": 500}`,
"utf8.parsed.level": "error",
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
"utf8.parsed.code": "500",
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
{
colMsg: `{"msg": "unclosed}`,
"utf8.parsed.level": nil,
"utf8.parsed.method": nil,
"utf8.parsed.status": nil,
"utf8.parsed.code": nil,
semconv.ColumnIdentError.FQN(): "JSONParserErr",
semconv.ColumnIdentErrorDetails.FQN(): "Value is string, but can't find closing '\"' symbol",
},
{
colMsg: `{"level": "debug", "method": "POST"}`,
"utf8.parsed.level": "debug",
"utf8.parsed.method": "POST",
"utf8.parsed.status": nil,
"utf8.parsed.code": nil,
semconv.ColumnIdentError.FQN(): nil,
semconv.ColumnIdentErrorDetails.FQN(): nil,
},
},
},
{
name: "handle nested JSON objects with underscore flattening",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"user": {"name": "john", "details": {"age": "30", "city": "NYC"}}, "status": "active"}`},
{colMsg: `{"app": {"version": "1.0", "config": {"debug": "true"}}, "level": "info"}`},
{colMsg: `{"nested": {"deep": {"very": {"deep": "value"}}}}`},
},
requestedKeys: nil, // Extract all keys including nested ones
expectedFields: 9, // message, app_config_debug, app_version, level, nested_deep_very_deep, status, user_details_age, user_details_city, user_name
expectedOutput: arrowtest.Rows{
{
colMsg: `{"user": {"name": "john", "details": {"age": "30", "city": "NYC"}}, "status": "active"}`,
"utf8.parsed.app_config_debug": nil,
"utf8.parsed.app_version": nil,
"utf8.parsed.level": nil,
"utf8.parsed.nested_deep_very_deep": nil,
"utf8.parsed.status": "active",
"utf8.parsed.user_details_age": "30",
"utf8.parsed.user_details_city": "NYC",
"utf8.parsed.user_name": "john",
},
{
colMsg: `{"app": {"version": "1.0", "config": {"debug": "true"}}, "level": "info"}`,
"utf8.parsed.app_config_debug": "true",
"utf8.parsed.app_version": "1.0",
"utf8.parsed.level": "info",
"utf8.parsed.nested_deep_very_deep": nil,
"utf8.parsed.status": nil,
"utf8.parsed.user_details_age": nil,
"utf8.parsed.user_details_city": nil,
"utf8.parsed.user_name": nil,
},
{
colMsg: `{"nested": {"deep": {"very": {"deep": "value"}}}}`,
"utf8.parsed.app_config_debug": nil,
"utf8.parsed.app_version": nil,
"utf8.parsed.level": nil,
"utf8.parsed.nested_deep_very_deep": "value",
"utf8.parsed.status": nil,
"utf8.parsed.user_details_age": nil,
"utf8.parsed.user_details_city": nil,
"utf8.parsed.user_name": nil,
},
},
},
{
name: "handle nested JSON with specific requested keys",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"user": {"name": "alice", "profile": {"email": "alice@example.com"}}, "level": "debug"}`},
{colMsg: `{"user": {"name": "bob"}, "level": "info"}`},
{colMsg: `{"level": "error", "error": {"code": "500", "message": "internal"}}`},
},
requestedKeys: []string{"user_name", "user_profile_email", "level"},
expectedFields: 4, // message, level, user_name, user_profile_email
expectedOutput: arrowtest.Rows{
{
colMsg: `{"user": {"name": "alice", "profile": {"email": "alice@example.com"}}, "level": "debug"}`,
"utf8.parsed.level": "debug",
"utf8.parsed.user_name": "alice",
"utf8.parsed.user_profile_email": "alice@example.com",
},
{
colMsg: `{"user": {"name": "bob"}, "level": "info"}`,
"utf8.parsed.level": "info",
"utf8.parsed.user_name": "bob",
"utf8.parsed.user_profile_email": nil,
},
{
colMsg: `{"level": "error", "error": {"code": "500", "message": "internal"}}`,
"utf8.parsed.level": "error",
"utf8.parsed.user_name": nil,
"utf8.parsed.user_profile_email": nil,
},
},
},
{
name: "accept JSON numbers as strings (v1 compatibility)",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"status": 200, "port": 8080, "timeout": 30.5, "retries": 0}`},
{colMsg: `{"level": "info", "pid": 12345, "memory": 256.8}`},
{colMsg: `{"score": -1, "version": 2.1, "enabled": true}`},
},
requestedKeys: []string{"status", "port", "timeout", "pid", "memory", "score", "version"},
expectedFields: 8, // message, memory, pid, port, score, status, timeout, version
expectedOutput: arrowtest.Rows{
{
colMsg: `{"status": 200, "port": 8080, "timeout": 30.5, "retries": 0}`,
"utf8.parsed.memory": nil,
"utf8.parsed.pid": nil,
"utf8.parsed.port": "8080",
"utf8.parsed.score": nil,
"utf8.parsed.status": "200",
"utf8.parsed.timeout": "30.5",
"utf8.parsed.version": nil,
},
{
colMsg: `{"level": "info", "pid": 12345, "memory": 256.8}`,
"utf8.parsed.memory": "256.8",
"utf8.parsed.pid": "12345",
"utf8.parsed.port": nil,
"utf8.parsed.score": nil,
"utf8.parsed.status": nil,
"utf8.parsed.timeout": nil,
"utf8.parsed.version": nil,
},
{
colMsg: `{"score": -1, "version": 2.1, "enabled": true}`,
"utf8.parsed.memory": nil,
"utf8.parsed.pid": nil,
"utf8.parsed.port": nil,
"utf8.parsed.score": "-1",
"utf8.parsed.status": nil,
"utf8.parsed.timeout": nil,
"utf8.parsed.version": "2.1",
},
},
},
{
name: "mixed nested objects and numbers",
schema: arrow.NewSchema([]arrow.Field{
semconv.FieldFromFQN("utf8.builtin.message", true),
}, nil),
input: arrowtest.Rows{
{colMsg: `{"request": {"url": "/api/users", "method": "GET"}, "response": {"status": 200, "time": 45.2}}`},
{colMsg: `{"user": {"id": 123, "profile": {"age": 25}}, "active": true}`},
},
requestedKeys: nil, // Extract all keys
expectedFields: 8, // message, active, request_method, request_url, response_status, response_time, user_id, user_profile_age
expectedOutput: arrowtest.Rows{
{
colMsg: `{"request": {"url": "/api/users", "method": "GET"}, "response": {"status": 200, "time": 45.2}}`,
"utf8.parsed.active": nil,
"utf8.parsed.request_method": "GET",
"utf8.parsed.request_url": "/api/users",
"utf8.parsed.response_status": "200",
"utf8.parsed.response_time": "45.2",
"utf8.parsed.user_id": nil,
"utf8.parsed.user_profile_age": nil,
},
{
colMsg: `{"user": {"id": 123, "profile": {"age": 25}}, "active": true}`,
"utf8.parsed.active": "true",
"utf8.parsed.request_method": nil,
"utf8.parsed.request_url": nil,
"utf8.parsed.response_status": nil,
"utf8.parsed.response_time": nil,
"utf8.parsed.user_id": "123",
"utf8.parsed.user_profile_age": "25",
},
},
},
} {
t.Run(tt.name, func(t *testing.T) {
alloc := memory.NewCheckedAllocator(memory.DefaultAllocator)
defer alloc.AssertSize(t, 0) // Assert empty on test exit
// Create input data with message column containing JSON
input := NewArrowtestPipeline(
alloc,
tt.schema,
tt.input,
)
// Create ParseNode for JSON parsing
parseNode := &physical.ParseNode{
Kind: physical.ParserJSON,
RequestedKeys: tt.requestedKeys,
}
pipeline := NewParsePipeline(parseNode, input, alloc)
// Read first record
ctx := t.Context()
record, err := pipeline.Read(ctx)
require.NoError(t, err)
defer record.Release()
// Verify the output has the expected number of fields
outputSchema := record.Schema()
require.Equal(t, tt.expectedFields, outputSchema.NumFields())
// Convert record to rows for comparison
actual, err := arrowtest.RecordRows(record)
require.NoError(t, err)
require.Equal(t, tt.expectedOutput, actual)
})
}
}