feat: add consumer --mirror argument to consume only from the selected (

#4048)

crates/fluvio-cli/src/client/consume/mod.rs

@@ -84,6 +84,10 @@ mod cmd {
         #[arg(short = 'p', long, value_name = "integer")]
         pub partition: Vec<PartitionId>,
 
+        /// Remote cluster to consume from
+        #[arg(short = 'm', long)]
+        pub mirror: Option<String>,
+
         /// Consume records from all partitions
         #[arg(short = 'A', long = "all-partitions", conflicts_with_all = &["partition"])]
         pub all_partitions: bool,
@@ -316,6 +320,10 @@ mod cmd {
                 builder.offset_flush(DEFAULT_OFFSET_FLUSH_INTERVAL);
             }
 
+            if let Some(ref mirror) = self.mirror {
+                builder.mirror(mirror.clone());
+            }
+
             if let Some(max_bytes) = self.max_bytes {
                 builder.max_bytes(max_bytes);
             }
@@ -780,6 +788,7 @@ mod cmd {
             ConsumeOpt {
                 topic: "TOPIC_NAME".to_string(),
                 partition: Default::default(),
+                mirror: Default::default(),
                 all_partitions: Default::default(),
                 disable_continuous: Default::default(),
                 disable_progressbar: Default::default(),

crates/fluvio/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fluvio"
-version = "0.22.2"
+version = "0.22.3"
 edition = "2021"
 license = "Apache-2.0"
 authors = ["Fluvio Contributors <[email protected]>"]

crates/fluvio/src/consumer/config.rs

@@ -60,6 +60,8 @@ pub struct ConsumerConfigExt {
     #[builder(default, setter(custom))]
     pub partition: Vec<PartitionId>,
     #[builder(default, setter(strip_option, into))]
+    pub mirror: Option<String>,
+    #[builder(default, setter(strip_option, into))]
     pub offset_consumer: Option<String>,
     pub offset_start: Offset,
     #[builder(default)]
@@ -93,6 +95,7 @@ impl ConsumerConfigExt {
         let Self {
             topic: _,
             partition: _,
+            mirror: _,
             offset_consumer,
             offset_start,
             disable_continuous,
@@ -132,6 +135,7 @@ impl From<ConsumerConfigExt> for ConsumerConfig {
         let ConsumerConfigExt {
             topic: _,
             partition: _,
+            mirror: _,
             offset_consumer: _,
             offset_start: _,
             offset_strategy: _,

crates/fluvio/src/fluvio.rs

@@ -1,6 +1,10 @@
 use std::convert::TryFrom;
 use std::sync::Arc;
 
+use fluvio_sc_schema::partition::PartitionMirrorConfig;
+use fluvio_sc_schema::topic::MirrorConfig;
+use fluvio_sc_schema::topic::PartitionMap;
+use fluvio_sc_schema::topic::ReplicaSpec;
 use tracing::{debug, info};
 use tokio::sync::OnceCell;
 use anyhow::{anyhow, Result};
@@ -323,7 +327,30 @@ impl Fluvio {
             .await?
             .ok_or_else(|| FluvioError::TopicNotFound(topic.to_string()))?
             .spec;
-        let partitions = if config.partition.is_empty() {
+
+        let mirror_partition = if let Some(ref mirror) = &config.mirror {
+            match topic_spec.replicas() {
+                ReplicaSpec::Mirror(MirrorConfig::Home(home_mirror_config)) => {
+                    let partitions_maps =
+                        Vec::<PartitionMap>::from(home_mirror_config.as_partition_maps());
+                    partitions_maps.iter().find_map(|p| {
+                        if let Some(PartitionMirrorConfig::Home(remote)) = &p.mirror {
+                            if remote.remote_cluster == *mirror {
+                                return Some(p.id);
+                            }
+                        }
+                        None
+                    })
+                }
+                _ => None,
+            }
+        } else {
+            None
+        };
+
+        let partitions = if let Some(partition) = mirror_partition {
+            vec![partition]
+        } else if config.partition.is_empty() {
             (0..topic_spec.partitions()).collect()
         } else {
             config.partition.clone()

tests/cli/mirroring_smoke_tests/e2e/fluvio-core.bats

@@ -178,19 +178,24 @@ setup_file() {
     assert_success
 }
 
-#TODO: use --mirror argument when it is available
-@test "Can consume message from mirror topic produced from remote 1" {
+@test "Can consume message from mirror topic produced from remote 1 by partition or remote" {
     sleep 5
     run timeout 15s "$FLUVIO_BIN" consume "$TOPIC_NAME" -p 0 -B -d
+    assert_output 1$'\n'a$'\n'2$'\n'b
+    assert_success
 
+    run timeout 15s "$FLUVIO_BIN" consume "$TOPIC_NAME" --mirror "$REMOTE_NAME" -B -d
     assert_output 1$'\n'a$'\n'2$'\n'b
     assert_success
 }
 
-@test "Can consume message from mirror topic produced from remote 2" {
+@test "Can consume message from mirror topic produced from remote 2 by partition or remote" {
     sleep 5
     run timeout 15s "$FLUVIO_BIN" consume "$TOPIC_NAME" -p 1 -B -d
+    assert_output 9$'\n'z$'\n'8$'\n'y
+    assert_success
 
+    run timeout 15s "$FLUVIO_BIN" consume "$TOPIC_NAME" --mirror "$REMOTE_NAME_2" -B -d
     assert_output 9$'\n'z$'\n'8$'\n'y
     assert_success
 }