chore: remove unused code (#4559)

src/common/wal/src/config/kafka/standalone.rs

@@ -1,72 +0,0 @@
-// Copyright 2023 Greptime Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use std::time::Duration;
-
-use common_base::readable_size::ReadableSize;
-use serde::{Deserialize, Serialize};
-
-use crate::config::kafka::common::{backoff_prefix, BackoffConfig};
-use crate::{TopicSelectorType, BROKER_ENDPOINT, TOPIC_NAME_PREFIX};
-
-/// Kafka wal configurations for standalone.
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
-#[serde(default)]
-pub struct StandaloneKafkaConfig {
-    /// The broker endpoints of the Kafka cluster.
-    pub broker_endpoints: Vec<String>,
-    /// Number of topics to be created upon start.
-    pub num_topics: usize,
-    /// The type of the topic selector with which to select a topic for a region.
-    pub selector_type: TopicSelectorType,
-    /// Topic name prefix.
-    pub topic_name_prefix: String,
-    /// Number of partitions per topic.
-    pub num_partitions: i32,
-    /// The replication factor of each topic.
-    pub replication_factor: i16,
-    /// The timeout of topic creation.
-    #[serde(with = "humantime_serde")]
-    pub create_topic_timeout: Duration,
-    /// TODO(weny): Remove the alias once we release v0.9.
-    /// The max size of a single producer batch.
-    #[serde(alias = "max_batch_size")]
-    pub max_batch_bytes: ReadableSize,
-    /// The consumer wait timeout.
-    #[serde(with = "humantime_serde")]
-    pub consumer_wait_timeout: Duration,
-    /// The backoff config.
-    #[serde(flatten, with = "backoff_prefix")]
-    pub backoff: BackoffConfig,
-}
-
-impl Default for StandaloneKafkaConfig {
-    fn default() -> Self {
-        let broker_endpoints = vec![BROKER_ENDPOINT.to_string()];
-        let replication_factor = broker_endpoints.len() as i16;
-        Self {
-            broker_endpoints,
-            num_topics: 64,
-            selector_type: TopicSelectorType::RoundRobin,
-            topic_name_prefix: TOPIC_NAME_PREFIX.to_string(),
-            num_partitions: 1,
-            replication_factor,
-            create_topic_timeout: Duration::from_secs(30),
-            // Warning: Kafka has a default limit of 1MB per message in a topic.
-            max_batch_bytes: ReadableSize::mb(1),
-            consumer_wait_timeout: Duration::from_millis(100),
-            backoff: BackoffConfig::default(),
-        }
-    }
-}