diff options
Diffstat (limited to 'src/garage')
| -rw-r--r-- | src/garage/cli/layout.rs | 129 | ||||
| -rw-r--r-- | src/garage/cli/structs.rs | 13 |
2 files changed, 113 insertions, 29 deletions
diff --git a/src/garage/cli/layout.rs b/src/garage/cli/layout.rs index 3884bb92..5056e57d 100644 --- a/src/garage/cli/layout.rs +++ b/src/garage/cli/layout.rs @@ -14,8 +14,8 @@ pub async fn cli_layout_command_dispatch( rpc_host: NodeID, ) -> Result<(), Error> { match cmd { - LayoutOperation::Assign(configure_opt) => { - cmd_assign_role(system_rpc_endpoint, rpc_host, configure_opt).await + LayoutOperation::Assign(assign_opt) => { + cmd_assign_role(system_rpc_endpoint, rpc_host, assign_opt).await } LayoutOperation::Remove(remove_opt) => { cmd_remove_role(system_rpc_endpoint, rpc_host, remove_opt).await @@ -27,6 +27,9 @@ pub async fn cli_layout_command_dispatch( LayoutOperation::Revert(revert_opt) => { cmd_revert_layout(system_rpc_endpoint, rpc_host, revert_opt).await } + LayoutOperation::Config(config_opt) => { + cmd_config_layout(system_rpc_endpoint, rpc_host, config_opt).await + } } } @@ -166,7 +169,7 @@ pub async fn cmd_show_layout( rpc_cli: &Endpoint<SystemRpc, ()>, rpc_host: NodeID, ) -> Result<(), Error> { - let mut layout = fetch_layout(rpc_cli, rpc_host).await?; + let layout = fetch_layout(rpc_cli, rpc_host).await?; println!("==== CURRENT CLUSTER LAYOUT ===="); if !print_cluster_layout(&layout) { @@ -176,30 +179,44 @@ pub async fn cmd_show_layout( println!(); println!("Current cluster layout version: {}", layout.version); - if print_staging_role_changes(&layout) { - layout.roles.merge(&layout.staging); - - println!(); - println!("==== NEW CLUSTER LAYOUT AFTER APPLYING CHANGES ===="); - if !print_cluster_layout(&layout) { - println!("No nodes have a role in the new layout."); - } - println!(); + let has_role_changes = print_staging_role_changes(&layout); + let has_param_changes = print_staging_parameters_changes(&layout); + if has_role_changes || has_param_changes { + let v = layout.version; + let res_apply = layout.apply_staged_changes(Some(v + 1)); // this will print the stats of what partitions // will move around when we apply - if layout.calculate_partition_assignation() { - println!("To enact the staged role changes, type:"); - println!(); - println!(" garage layout apply --version {}", layout.version + 1); - println!(); - println!( - "You can also revert all proposed changes with: garage layout revert --version {}", - layout.version + 1 - ); - } else { - println!("Not enough nodes have an assigned role to maintain enough copies of data."); - println!("This new layout cannot yet be applied."); + match res_apply { + Ok((layout, msg)) => { + println!(); + println!("==== NEW CLUSTER LAYOUT AFTER APPLYING CHANGES ===="); + if !print_cluster_layout(&layout) { + println!("No nodes have a role in the new layout."); + } + println!(); + + for line in msg.iter() { + println!("{}", line); + } + println!("To enact the staged role changes, type:"); + println!(); + println!(" garage layout apply --version {}", v + 1); + println!(); + println!( + "You can also revert all proposed changes with: garage layout revert --version {}", + v + 1) + } + Err(Error::Message(s)) => { + println!("Error while trying to compute the assignation: {}", s); + println!("This new layout cannot yet be applied."); + println!( + "You can also revert all proposed changes with: garage layout revert --version {}", + v + 1) + } + _ => { + println!("Unknown Error"); + } } } @@ -213,7 +230,10 @@ pub async fn cmd_apply_layout( ) -> Result<(), Error> { let layout = fetch_layout(rpc_cli, rpc_host).await?; - let layout = layout.apply_staged_changes(apply_opt.version)?; + let (layout, msg) = layout.apply_staged_changes(apply_opt.version)?; + for line in msg.iter() { + println!("{}", line); + } send_layout(rpc_cli, rpc_host, layout).await?; @@ -238,6 +258,37 @@ pub async fn cmd_revert_layout( Ok(()) } +pub async fn cmd_config_layout( + rpc_cli: &Endpoint<SystemRpc, ()>, + rpc_host: NodeID, + config_opt: ConfigLayoutOpt, +) -> Result<(), Error> { + let mut layout = fetch_layout(rpc_cli, rpc_host).await?; + + match config_opt.redundancy { + None => (), + Some(r) => { + if r > layout.replication_factor { + println!( + "The zone redundancy must be smaller or equal to the \ + replication factor ({}).", + layout.replication_factor + ); + } else if r < 1 { + println!("The zone redundancy must be at least 1."); + } else { + layout + .staged_parameters + .update(LayoutParameters { zone_redundancy: r }); + println!("The new zone redundancy has been saved ({}).", r); + } + } + } + + send_layout(rpc_cli, rpc_host, layout).await?; + Ok(()) +} + // --- utility --- pub async fn fetch_layout( @@ -269,21 +320,29 @@ pub async fn send_layout( } pub fn print_cluster_layout(layout: &ClusterLayout) -> bool { - let mut table = vec!["ID\tTags\tZone\tCapacity".to_string()]; + let mut table = vec!["ID\tTags\tZone\tCapacity\tUsable".to_string()]; for (id, _, role) in layout.roles.items().iter() { let role = match &role.0 { Some(r) => r, _ => continue, }; let tags = role.tags.join(","); + let usage = layout.get_node_usage(id).unwrap_or(0); + let capacity = layout.get_node_capacity(id).unwrap_or(1); table.push(format!( - "{:?}\t{}\t{}\t{}", + "{:?}\t{}\t{}\t{}\t{} ({:.1}%)", id, tags, role.zone, - role.capacity_string() + role.capacity_string(), + usage as u32 * layout.partition_size, + (100.0 * usage as f32 * layout.partition_size as f32) / (capacity as f32) )); } + println!(); + println!("Parameters of the layout computation:"); + println!("Zone redundancy: {}", layout.parameters.zone_redundancy); + println!(); if table.len() == 1 { false } else { @@ -292,6 +351,20 @@ pub fn print_cluster_layout(layout: &ClusterLayout) -> bool { } } +pub fn print_staging_parameters_changes(layout: &ClusterLayout) -> bool { + let has_changes = layout.staged_parameters.get().clone() != layout.parameters; + if has_changes { + println!(); + println!("==== NEW LAYOUT PARAMETERS ===="); + println!( + "Zone redundancy: {}", + layout.staged_parameters.get().zone_redundancy + ); + println!(); + } + has_changes +} + pub fn print_staging_role_changes(layout: &ClusterLayout) -> bool { let has_changes = layout .staging diff --git a/src/garage/cli/structs.rs b/src/garage/cli/structs.rs index cb085813..64798952 100644 --- a/src/garage/cli/structs.rs +++ b/src/garage/cli/structs.rs @@ -87,6 +87,10 @@ pub enum LayoutOperation { #[structopt(name = "remove", version = garage_version())] Remove(RemoveRoleOpt), + /// Configure parameters value for the layout computation + #[structopt(name = "config", version = garage_version())] + Config(ConfigLayoutOpt), + /// Show roles currently assigned to nodes and changes staged for commit #[structopt(name = "show", version = garage_version())] Show, @@ -110,7 +114,7 @@ pub struct AssignRoleOpt { #[structopt(short = "z", long = "zone")] pub(crate) zone: Option<String>, - /// Capacity (in relative terms, use 1 to represent your smallest server) + /// Capacity (in relative terms) #[structopt(short = "c", long = "capacity")] pub(crate) capacity: Option<u32>, @@ -134,6 +138,13 @@ pub struct RemoveRoleOpt { } #[derive(StructOpt, Debug)] +pub struct ConfigLayoutOpt { + /// Zone redundancy parameter + #[structopt(short = "r", long = "redundancy")] + pub(crate) redundancy: Option<usize>, +} + +#[derive(StructOpt, Debug)] pub struct ApplyLayoutOpt { /// Version number of new configuration: this command will fail if /// it is not exactly 1 + the previous configuration's version |