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Fix helloworld tutorial. #546

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merged 1 commit into from
Feb 2, 2021

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16yuki0702
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Motivation

I got a error when trying to run helloworld tutorial

thread 'main' panicked at 'there is no reactor running, must be called from the context of a Tokio 1.x runtime'

because tonic 0.4 currently depends on Tokio 1.x.

Solution

updated example to use Tokio 1.x.

@@ -179,7 +179,7 @@ impl Greeter for MyGreeter {
Finally, let's define the Tokio runtime that our server will actually run on. This requires Tokio to be added as a dependency, so make sure you included that!

```rust
#[tokio::main]
#[tokio::main(flavor = "current_thread")]
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@olix0r olix0r Jan 27, 2021

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It would probably better to use the multithreaded runtime by adding the feature and removing these flavor changes.

@@ -115,7 +115,7 @@ path = "src/client.rs"
[dependencies]
tonic = "0.4"
prost = "0.7"
tokio = { version = "0.2", features = ["macros"] }
tokio = { version = "1.0", features = ["macros"] }
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Suggested change
tokio = { version = "1.0", features = ["macros"] }
tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }

updated tutorial to use tokio 1.x.
@16yuki0702 16yuki0702 force-pushed the fix_helloworld_tutorial branch from f7a10c4 to bd59497 Compare January 28, 2021 00:56
@16yuki0702
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@olix0r Thank for review!
I fixed to use rt-multi-thread.

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3 participants