feat(otlp): tracing parse body

[yuanbohan]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

to_grpc_insert_requests implementation

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• help to parse ExportTraceServiceRequest into grpc_insert_requests

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

[github-actions]

license-eye has totally checked 1352 files.

Valid	Invalid	Ignored	Fixed
978	1	373	0

Click to see the invalid file list

• src/servers/src/otlp/plugin.rs

[yuanbohan]

mysql> select * from traces_preview_v01 limit 1 \G;
*************************** 1. row ***************************
           trace_id: faf7c7d93c7af3ca7645667e36bed738
            span_id: 64647632db529e69
     parent_span_id: c3ce0598546e7434
           resource: {"telemetry.sdk.language":"python","service.name":"greptime-llm-langchain-example","telemetry.sdk.version":"1.20.0","telemetry.sdk.name":"opentelemetry"}
         scope_name: greptime-langchain-instrument
      scope_version: 0.1.0
   scope_attributes: {}
        trace_state:
          span_name: llm
          span_kind: SPAN_KIND_INTERNAL
   span_status_code: STATUS_CODE_OK
span_status_message:
    span_attributes: {"user_id":"2222"}
        span_events: ["{\"attrs\":\"{\\\"messages\\\":\\\"System: You are a helpful assistant\\\\nHuman: give me a boy name\\\",\\\"tags\\\":\\\"[]\\\",\\\"params\\\":\\\"{'model': 'gpt-3.5-turbo', 'model_name': 'gpt-3.5-turbo', 'request_timeout': None, 'max_tokens': None, 'stream': False, 'n': 1, 'temperature': 0.7, '_type': 'openai-chat', 'stop': None}\\\",\\\"type\\\":\\\"ChatOpenAI\\\",\\\"serialized\\\":\\\"{'lc': 1, 'type': 'constructor', 'id': ['langchain', 'chat_models', 'openai', 'ChatOpenAI'], 'kwargs': {'openai_api_key': {'lc': 1, 'type': 'secret', 'id': ['OPENAI_API_KEY']}}}\\\",\\\"metadata\\\":\\\"{'user_id': '2222'}\\\"}\",\"name\":\"chat_model_start\",\"time\":\"[TimeNanosecond: 1697727227416701000]\"}","{\"attrs\":\"{\\\"model\\\":\\\"gpt-3.5-turbo\\\",\\\"outputs\\\":\\\"[\\\\\\\"{'text': 'Here are some popular boy names:\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\n1. Liam\\\\\\\\\\\\\\\\n2. Noah\\\\\\\\\\\\\\\\n3. Ethan\\\\\\\\\\\\\\\\n4. Oliver\\\\\\\\\\\\\\\\n5. Benjamin\\\\\\\\\\\\\\\\n6. William\\\\\\\\\\\\\\\\n7. James\\\\\\\\\\\\\\\\n8. Henry\\\\\\\\\\\\\\\\n9. Alexander\\\\\\\\\\\\\\\\n10. Samuel', 'finish_reason': 'stop', 'log_probability': None, 'additional_kwargs': {}, 'type': 'ai'}\\\\\\\"]\\\",\\\"prompt_tokens\\\":\\\"21\\\",\\\"completion_tokens\\\":\\\"46\\\"}\",\"name\":\"llm_end\",\"time\":\"[TimeNanosecond: 1697727234269515000]\"}"]
         span_links: []
              start: 2023-10-19 22:53:47.416695
                end: 2023-10-19 22:53:54.269533
     greptime_value: 6852.838
 greptime_timestamp: 2023-10-19 22:53:47.416
1 row in set (0.04 sec)

ERROR:
No query specified

mysql> show create table traces_preview_v01;
+--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table              | Create Table                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| traces_preview_v01 | CREATE TABLE IF NOT EXISTS `traces_preview_v01` (
  `trace_id` STRING NULL,
  `span_id` STRING NULL,
  `parent_span_id` STRING NULL,
  `resource` STRING NULL,
  `scope_name` STRING NULL,
  `scope_version` STRING NULL,
  `scope_attributes` STRING NULL,
  `trace_state` STRING NULL,
  `span_name` STRING NULL,
  `span_kind` STRING NULL,
  `span_status_code` STRING NULL,
  `span_status_message` STRING NULL,
  `span_attributes` STRING NULL,
  `span_events` STRING NULL,
  `span_links` STRING NULL,
  `start` TIMESTAMP(9) NULL,
  `end` TIMESTAMP(9) NULL,
  `greptime_value` DOUBLE NULL,
  `greptime_timestamp` TIMESTAMP(3) NOT NULL,
  TIME INDEX (`greptime_timestamp`),
  PRIMARY KEY (`trace_id`, `span_id`, `parent_span_id`)
)

ENGINE=mito
WITH(
  regions = 1
) |
+--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)