Merge branch '0.26.1-scylladb'

Author: vponomaryov

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "latte-cli"
 description = "A database benchmarking tool for Apache Cassandra"
-version = "0.25.2-scylladb"
+version = "0.26.1-scylladb"
 authors = ["Piotr Kołaczkowski <[email protected]>"]
 edition = "2021"
 readme = "README.md"
@@ -14,19 +14,18 @@ path = "src/main.rs"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [dependencies]
 anyhow = "1.0"
-base64 = "0.21"
+base64 = "0.22"
 rmp = "0.8.10"
 rmp-serde = "1.0.0-beta.2"
 chrono = { version = "0.4.18", features = ["serde"] }
 clap = { version = "4", features = ["derive", "cargo", "env"] }
 console = "0.15.0"
 cpu-time = "1.0.0"
-ctrlc = "3.2.1"
 err-derive = "0.3"
 futures = "0.3"
 hdrhistogram = "7.1.0"
 hytra = "0.1.2"
-itertools = "0.12"
+itertools = "0.13"
 jemallocator = "0.5"
 lazy_static = "1.4.0"
 metrohash = "1.0"
@@ -43,13 +42,13 @@ scylla = { version = "0.13", features = ["ssl"] }
 search_path = "0.1"
 serde = { version = "1.0.116", features = ["derive"] }
 serde_json = "1.0.57"
-statrs = "0.16"
+statrs = "0.17"
 status-line = "0.2.0"
 strum = { version = "0.26", features = ["derive"] }
 strum_macros = "0.26"
 time = "0.3"
 thiserror = "1.0.26"
-tokio = { version = "1", features = ["rt", "rt-multi-thread", "time", "parking_lot"] }
+tokio = { version = "1", features = ["rt", "rt-multi-thread", "time", "parking_lot", "signal"] }
 tokio-stream = "0.1"
 tracing = "0.1"
 tracing-subscriber = "0.3"

Cargo.toml

@@ -170,6 +170,19 @@ pub async fn run(ctx, i) {
 }
 ```
 
+Query parameters can be bound and passed by names as well:
+```rust
+const INSERT = "my_insert";
+
+pub async fn prepare(ctx) {
+  ctx.prepare(INSERT, "INSERT INTO test.test(id, data) VALUES (:id, :data)").await?;
+}
+
+pub async fn run(ctx, i) {
+  ctx.execute_prepared(INSERT, #{id: 5, data: "foo"}).await
+}
+```
+
 ### Populating the database
 
 Read queries are more interesting when they return non-empty result sets. 
@@ -209,18 +222,20 @@ are pure, i.e. invoking them multiple times with the same parameters yields alwa
 - `latte::hash_select(i, vector)` – selects an item from a vector based on a hash
 - `latte::blob(i, len)` – generates a random binary blob of length `len`
 - `latte::normal(i, mean, std_dev)` – generates a floating point number from a normal distribution
-
-#### Numeric conversions
-
-Rune represents integers as 64-bit signed values. Therefore, it is possible to directly pass a Rune integer to
-a Cassandra column of type `bigint`. However, binding a 64-bit value to smaller integer column types, like
-`int`, `smallint` or `tinyint` will result in a runtime error. As long as an integer value does not exceed the bounds,
-you can convert it to smaller signed  integer types by using the following instance functions:
-
-- `x.to_i32()` – converts a float or integer to a 32-bit signed integer, compatible with Cassandra `int` type
-- `x.to_i16()` – converts a float or integer to a 16-bit signed integer, compatible with Cassandra `smallint` type
-- `x.to_i8()` – converts a float or integer to an 8-bit signed integer, compatible with Cassandra `tinyint` type
-- `x.clamp(min, max)` – restricts the range of an integer or a float value to given range  
+- `latte::uniform(i, min, max)` – generates a floating point number from a uniform distribution
+
+#### Type conversions
+Rune uses 64-bit representation for integers and floats. 
+Since version 0.28 Rune numbers are automatically converted to proper target query parameter type,
+therefore you don't need to do explicit conversions. E.g. you can pass an integer as a parameter
+of Cassandra type `smallint`. If the number is too big to fit into the range allowed by the target
+type, a runtime error will be signalled.
+
+The following methods are available:
+- `x.to_integer()` – converts a float to an integer
+- `x.to_float()` – converts an integer to a float
+- `x.to_string()` – converts a float or integer to a string
+- `x.clamp(min, max)` – restricts the range of an integer or a float value to given range 
 
 You can also convert between floats and integers by calling `to_integer` or `to_float` instance functions.