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Add changes in spec apply (#12759)

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## Problem
All changes are no-op. 

## Summary of changes
This commit is contained in:
HaoyuHuang
2025-07-29 08:22:04 -07:00
committed by GitHub
parent 1bb434ab74
commit 62d844e657
4 changed files with 296 additions and 12 deletions
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63
compute_tools/src/compute.rs
View File

@@ -6,7 +6,8 @@ use compute_api::responses::{
LfcPrewarmState, PromoteState, TlsConfig,
};
use compute_api::spec::{
ComputeAudit, ComputeFeature, ComputeMode, ComputeSpec, ExtVersion, PageserverProtocol, PgIdent,
ComputeAudit, ComputeFeature, ComputeMode, ComputeSpec, ExtVersion, GenericOption,
PageserverProtocol, PgIdent, Role,
};
use futures::StreamExt;
use futures::future::join_all;
@@ -413,6 +414,66 @@ struct StartVmMonitorResult {
vm_monitor: Option<JoinHandle<Result<()>>>,
}
// BEGIN_HADRON
/// This function creates roles that are used by Databricks.
/// These roles are not needs to be botostrapped at PG Compute provisioning time.
/// The auth method for these roles are configured in databricks_pg_hba.conf in universe repository.
pub(crate) fn create_databricks_roles() -> Vec<String> {
let roles = vec![
// Role for prometheus_stats_exporter
Role {
name: "databricks_monitor".to_string(),
// This uses "local" connection and auth method for that is "trust", so no password is needed.
encrypted_password: None,
options: Some(vec![GenericOption {
name: "IN ROLE pg_monitor".to_string(),
value: None,
vartype: "string".to_string(),
}]),
},
// Role for brickstore control plane
Role {
name: "databricks_control_plane".to_string(),
// Certificate user does not need password.
encrypted_password: None,
options: Some(vec![GenericOption {
name: "SUPERUSER".to_string(),
value: None,
vartype: "string".to_string(),
}]),
},
// Role for brickstore httpgateway.
Role {
name: "databricks_gateway".to_string(),
// Certificate user does not need password.
encrypted_password: None,
options: None,
},
];
roles
.into_iter()
.map(|role| {
let query = format!(
r#"
DO $$
BEGIN
IF NOT EXISTS (
SELECT FROM pg_catalog.pg_roles WHERE rolname = '{}')
THEN
CREATE ROLE {} {};
END IF;
END
$$;"#,
role.name,
role.name.pg_quote(),
role.to_pg_options(),
);
query
})
.collect()
}
/// Databricks-specific environment variables to be passed to the `postgres` sub-process.
pub struct DatabricksEnvVars {
/// The Databricks "endpoint ID" of the compute instance. Used by `postgres` to check

205
compute_tools/src/spec_apply.rs
View File

@@ -13,17 +13,19 @@ use tokio_postgres::Client;
use tokio_postgres::error::SqlState;
use tracing::{Instrument, debug, error, info, info_span, instrument, warn};
use crate::compute::{ComputeNode, ComputeNodeParams, ComputeState};
use crate::compute::{ComputeNode, ComputeNodeParams, ComputeState, create_databricks_roles};
use crate::hadron_metrics::COMPUTE_CONFIGURE_STATEMENT_TIMEOUT_ERRORS;
use crate::pg_helpers::{
DatabaseExt, Escaping, GenericOptionsSearch, RoleExt, get_existing_dbs_async,
get_existing_roles_async,
};
use crate::spec_apply::ApplySpecPhase::{
CreateAndAlterDatabases, CreateAndAlterRoles, CreateAvailabilityCheck, CreatePgauditExtension,
AddDatabricksGrants, AlterDatabricksRoles, CreateAndAlterDatabases, CreateAndAlterRoles,
CreateAvailabilityCheck, CreateDatabricksMisc, CreateDatabricksRoles, CreatePgauditExtension,
CreatePgauditlogtofileExtension, CreatePrivilegedRole, CreateSchemaNeon,
DisablePostgresDBPgAudit, DropInvalidDatabases, DropRoles, FinalizeDropLogicalSubscriptions,
HandleNeonExtension, HandleOtherExtensions, RenameAndDeleteDatabases, RenameRoles,
RunInEachDatabase,
HandleDatabricksAuthExtension, HandleNeonExtension, HandleOtherExtensions,
RenameAndDeleteDatabases, RenameRoles, RunInEachDatabase,
};
use crate::spec_apply::PerDatabasePhase::{
ChangeSchemaPerms, DeleteDBRoleReferences, DropLogicalSubscriptions,
@@ -166,6 +168,7 @@ impl ComputeNode {
concurrency_token.clone(),
db,
[DropLogicalSubscriptions].to_vec(),
self.params.lakebase_mode,
);
Ok(tokio::spawn(fut))
@@ -186,15 +189,33 @@ impl ComputeNode {
};
}
for phase in [
CreatePrivilegedRole,
let phases = if self.params.lakebase_mode {
vec![
CreatePrivilegedRole,
// BEGIN_HADRON
CreateDatabricksRoles,
AlterDatabricksRoles,
// END_HADRON
DropInvalidDatabases,
RenameRoles,
CreateAndAlterRoles,
RenameAndDeleteDatabases,
CreateAndAlterDatabases,
CreateSchemaNeon,
] {
]
} else {
vec![
CreatePrivilegedRole,
DropInvalidDatabases,
RenameRoles,
CreateAndAlterRoles,
RenameAndDeleteDatabases,
CreateAndAlterDatabases,
CreateSchemaNeon,
]
};
for phase in phases {
info!("Applying phase {:?}", &phase);
apply_operations(
params.clone(),
@@ -203,6 +224,7 @@ impl ComputeNode {
jwks_roles.clone(),
phase,
|| async { Ok(&client) },
self.params.lakebase_mode,
)
.await?;
}
@@ -254,6 +276,7 @@ impl ComputeNode {
concurrency_token.clone(),
db,
phases,
self.params.lakebase_mode,
);
Ok(tokio::spawn(fut))
@@ -265,12 +288,28 @@ impl ComputeNode {
handle.await??;
}
let mut phases = vec![
let mut phases = if self.params.lakebase_mode {
vec![
HandleOtherExtensions,
HandleNeonExtension, // This step depends on CreateSchemaNeon
// BEGIN_HADRON
HandleDatabricksAuthExtension,
// END_HADRON
CreateAvailabilityCheck,
DropRoles,
// BEGIN_HADRON
AddDatabricksGrants,
CreateDatabricksMisc,
// END_HADRON
]
} else {
vec![
HandleOtherExtensions,
HandleNeonExtension, // This step depends on CreateSchemaNeon
CreateAvailabilityCheck,
DropRoles,
];
]
};
// This step depends on CreateSchemaNeon
if spec.drop_subscriptions_before_start && !drop_subscriptions_done {
@@ -303,6 +342,7 @@ impl ComputeNode {
jwks_roles.clone(),
phase,
|| async { Ok(&client) },
self.params.lakebase_mode,
)
.await?;
}
@@ -328,6 +368,7 @@ impl ComputeNode {
concurrency_token: Arc<tokio::sync::Semaphore>,
db: DB,
subphases: Vec<PerDatabasePhase>,
lakebase_mode: bool,
) -> Result<()> {
let _permit = concurrency_token.acquire().await?;
@@ -355,6 +396,7 @@ impl ComputeNode {
let client = client_conn.as_ref().unwrap();
Ok(client)
},
lakebase_mode,
)
.await?;
}
@@ -477,6 +519,10 @@ pub enum PerDatabasePhase {
#[derive(Clone, Debug)]
pub enum ApplySpecPhase {
CreatePrivilegedRole,
// BEGIN_HADRON
CreateDatabricksRoles,
AlterDatabricksRoles,
// END_HADRON
DropInvalidDatabases,
RenameRoles,
CreateAndAlterRoles,
@@ -489,7 +535,14 @@ pub enum ApplySpecPhase {
DisablePostgresDBPgAudit,
HandleOtherExtensions,
HandleNeonExtension,
// BEGIN_HADRON
HandleDatabricksAuthExtension,
// END_HADRON
CreateAvailabilityCheck,
// BEGIN_HADRON
AddDatabricksGrants,
CreateDatabricksMisc,
// END_HADRON
DropRoles,
FinalizeDropLogicalSubscriptions,
}
@@ -525,6 +578,7 @@ pub async fn apply_operations<'a, Fut, F>(
jwks_roles: Arc<HashSet<String>>,
apply_spec_phase: ApplySpecPhase,
client: F,
lakebase_mode: bool,
) -> Result<()>
where
F: FnOnce() -> Fut,
@@ -571,6 +625,23 @@ where
},
query
);
if !lakebase_mode {
return res;
}
// BEGIN HADRON
if let Err(e) = res.as_ref() {
if let Some(sql_state) = e.code() {
if sql_state.code() == "57014" {
// SQL State 57014 (ERRCODE_QUERY_CANCELED) is used for statement timeouts.
// Increment the counter whenever a statement timeout occurs. Timeouts on
// this configuration path can only occur due to PS connectivity problems that
// Postgres failed to recover from.
COMPUTE_CONFIGURE_STATEMENT_TIMEOUT_ERRORS.inc();
}
}
}
// END HADRON
res
}
.instrument(inspan)
@@ -612,6 +683,35 @@ async fn get_operations<'a>(
),
comment: None,
}))),
// BEGIN_HADRON
// New Hadron phase
ApplySpecPhase::CreateDatabricksRoles => {
let queries = create_databricks_roles();
let operations = queries.into_iter().map(|query| Operation {
query,
comment: None,
});
Ok(Box::new(operations))
}
// Backfill existing databricks_reader_* roles with statement timeout from GUC
ApplySpecPhase::AlterDatabricksRoles => {
let query = String::from(include_str!(
"sql/alter_databricks_reader_roles_timeout.sql"
));
let operations = once(Operation {
query,
comment: Some(
"Backfill existing databricks_reader_* roles with statement timeout"
.to_string(),
),
});
Ok(Box::new(operations))
}
// End of new Hadron Phase
// END_HADRON
ApplySpecPhase::DropInvalidDatabases => {
let mut ctx = ctx.write().await;
let databases = &mut ctx.dbs;
@@ -981,7 +1081,10 @@ async fn get_operations<'a>(
// N.B. this has to be properly dollar-escaped with `pg_quote_dollar()`
role_name = escaped_role,
outer_tag = outer_tag,
),
)
// HADRON change:
.replace("neon_superuser", &params.privileged_role_name),
// HADRON change end ,
comment: None,
},
// This now will only drop privileges of the role
@@ -1017,7 +1120,8 @@ async fn get_operations<'a>(
comment: None,
},
Operation {
query: String::from(include_str!("sql/default_grants.sql")),
query: String::from(include_str!("sql/default_grants.sql"))
.replace("neon_superuser", &params.privileged_role_name),
comment: None,
},
]
@@ -1086,6 +1190,28 @@ async fn get_operations<'a>(
Ok(Box::new(operations))
}
// BEGIN_HADRON
// Note: we may want to version the extension someday, but for now we just drop it and recreate it.
ApplySpecPhase::HandleDatabricksAuthExtension => {
let operations = vec![
Operation {
query: String::from("DROP EXTENSION IF EXISTS databricks_auth"),
comment: Some(String::from("dropping existing databricks_auth extension")),
},
Operation {
query: String::from("CREATE EXTENSION databricks_auth"),
comment: Some(String::from("creating databricks_auth extension")),
},
Operation {
query: String::from("GRANT SELECT ON databricks_auth_metrics TO pg_monitor"),
comment: Some(String::from("grant select on databricks auth counters")),
},
]
.into_iter();
Ok(Box::new(operations))
}
// END_HADRON
ApplySpecPhase::CreateAvailabilityCheck => Ok(Box::new(once(Operation {
query: String::from(include_str!("sql/add_availabilitycheck_tables.sql")),
comment: None,
@@ -1103,6 +1229,63 @@ async fn get_operations<'a>(
Ok(Box::new(operations))
}
// BEGIN_HADRON
// New Hadron phases
//
// Grants permissions to roles that are used by Databricks.
ApplySpecPhase::AddDatabricksGrants => {
let operations = vec![
Operation {
query: String::from("GRANT USAGE ON SCHEMA neon TO databricks_monitor"),
comment: Some(String::from(
"Permissions needed to execute neon.* functions (in the postgres database)",
)),
},
Operation {
query: String::from(
"GRANT SELECT, INSERT, UPDATE ON health_check TO databricks_monitor",
),
comment: Some(String::from("Permissions needed for read and write probes")),
},
Operation {
query: String::from(
"GRANT EXECUTE ON FUNCTION pg_ls_dir(text) TO databricks_monitor",
),
comment: Some(String::from(
"Permissions needed to monitor .snap file counts",
)),
},
Operation {
query: String::from(
"GRANT SELECT ON neon.neon_perf_counters TO databricks_monitor",
),
comment: Some(String::from(
"Permissions needed to access neon performance counters view",
)),
},
Operation {
query: String::from(
"GRANT EXECUTE ON FUNCTION neon.get_perf_counters() TO databricks_monitor",
),
comment: Some(String::from(
"Permissions needed to execute the underlying performance counters function",
)),
},
]
.into_iter();
Ok(Box::new(operations))
}
// Creates minor objects that are used by Databricks.
ApplySpecPhase::CreateDatabricksMisc => Ok(Box::new(once(Operation {
query: String::from(include_str!("sql/create_databricks_misc.sql")),
comment: Some(String::from(
"The function databricks_monitor uses to convert exception to 0 or 1",
)),
}))),
// End of new Hadron phases
// END_HADRON
ApplySpecPhase::FinalizeDropLogicalSubscriptions => Ok(Box::new(once(Operation {
query: String::from(include_str!("sql/finalize_drop_subscriptions.sql")),
comment: None,

25
compute_tools/src/sql/alter_databricks_reader_roles_timeout.sql Normal file
View File

@@ -0,0 +1,25 @@
DO $$
DECLARE
reader_role RECORD;
timeout_value TEXT;
BEGIN
-- Get the current GUC setting for reader statement timeout
SELECT current_setting('databricks.reader_statement_timeout', true) INTO timeout_value;
-- Only proceed if timeout_value is not null/empty and not '0' (disabled)
IF timeout_value IS NOT NULL AND timeout_value != '' AND timeout_value != '0' THEN
-- Find all databricks_reader_* roles and update their statement_timeout
FOR reader_role IN
SELECT r.rolname
FROM pg_roles r
WHERE r.rolname ~ '^databricks_reader_\d+$'
LOOP
-- Apply the timeout setting to the role (will overwrite existing setting)
EXECUTE format('ALTER ROLE %I SET statement_timeout = %L',
reader_role.rolname, timeout_value);
RAISE LOG 'Updated statement_timeout = % for role %', timeout_value, reader_role.rolname;
END LOOP;
END IF;
END
$$;

15
compute_tools/src/sql/create_databricks_misc.sql Normal file
View File

@@ -0,0 +1,15 @@
ALTER ROLE databricks_monitor SET statement_timeout = '60s';
CREATE OR REPLACE FUNCTION health_check_write_succeeds()
RETURNS INTEGER AS $$
BEGIN
INSERT INTO health_check VALUES (1, now())
ON CONFLICT (id) DO UPDATE
SET updated_at = now();
RETURN 1;
EXCEPTION WHEN OTHERS THEN
RAISE EXCEPTION '[DATABRICKS_SMGR] health_check failed: [%] %', SQLSTATE, SQLERRM;
RETURN 0;
END;
$$ LANGUAGE plpgsql;