use std::{collections::HashMap, path::PathBuf, time::Duration};
use anyhow::{bail, Context, Result};
use clap::Args;
use log::{debug, error};
use wash_lib::cli::CommandOutput;
use wash_lib::config::{DEFAULT_LATTICE_PREFIX, DEFAULT_NATS_HOST, DEFAULT_NATS_PORT};
use wash_lib::context::{
fs::{load_context, ContextDir},
ContextManager,
};
use wash_lib::id::{ClusterSeed, ModuleId};
use wasmbus_rpc::{common::Message, core::WasmCloudEntity, rpc_client::RpcClient};
use wasmcloud_test_util::testing::TestResults;
use crate::{
ctx::{context_dir, ensure_host_config_context},
util::{
default_timeout_ms, extract_arg_value, json_str_to_msgpack_bytes, msgpack_to_json_val,
nats_client_from_opts,
},
};
const WASH_ORIGIN_KEY: &str = "__WASH__";
const WASH_HOST_ID: &str = "NwashHostCallerId000000000000000000000000000000000000000";
#[derive(Debug, Args, Clone)]
#[clap(name = "call")]
pub(crate) struct CallCli {
#[clap(flatten)]
command: CallCommand,
}
impl CallCli {
pub(crate) fn command(self) -> CallCommand {
self.command
}
}
pub(crate) async fn handle_command(cmd: CallCommand) -> Result<CommandOutput> {
let is_test = cmd.test;
let save_output = cmd.save.clone();
let bin = cmd.bin;
let res = handle_call(cmd).await?;
call_output(res, save_output, bin, is_test)
}
#[derive(Debug, Clone, Args)]
pub(crate) struct ConnectionOpts {
#[clap(short = 'r', long = "rpc-host", env = "WASMCLOUD_RPC_HOST")]
rpc_host: Option<String>,
#[clap(short = 'p', long = "rpc-port", env = "WASMCLOUD_RPC_PORT")]
rpc_port: Option<String>,
#[clap(long = "rpc-jwt", env = "WASMCLOUD_RPC_JWT", hide_env_values = true)]
rpc_jwt: Option<String>,
#[clap(long = "rpc-seed", env = "WASMCLOUD_RPC_SEED", hide_env_values = true)]
rpc_seed: Option<String>,
#[clap(long = "rpc-credsfile", env = "WASH_RPC_CREDS", hide_env_values = true)]
rpc_credsfile: Option<PathBuf>,
#[clap(short = 'x', long = "lattice-prefix", env = "WASMCLOUD_LATTICE_PREFIX")]
lattice_prefix: Option<String>,
#[clap(
short = 't',
long = "rpc-timeout-ms",
default_value_t = default_timeout_ms(),
env = "WASMCLOUD_RPC_TIMEOUT_MS"
)]
timeout_ms: u64,
#[clap(long = "context")]
pub(crate) context: Option<PathBuf>,
}
#[derive(Args, Debug, Clone)]
pub(crate) struct CallCommand {
#[clap(flatten)]
opts: ConnectionOpts,
#[clap(short, long)]
pub(crate) data: Option<PathBuf>,
#[clap(long)]
pub(crate) save: Option<PathBuf>,
#[clap(long, default_value = "b")]
pub(crate) bin: char,
#[clap(long)]
pub(crate) test: bool,
#[clap(
short = 'c',
long = "cluster-seed",
env = "WASMCLOUD_CLUSTER_SEED",
value_parser
)]
pub(crate) cluster_seed: Option<ClusterSeed>,
#[clap(name = "actor-id")]
pub(crate) actor_id: ModuleId,
#[clap(name = "operation")]
pub(crate) operation: String,
#[clap(name = "payload")]
pub(crate) payload: Vec<String>,
}
pub(crate) async fn handle_call(cmd: CallCommand) -> Result<Vec<u8>> {
debug!(
"calling actor with operation: {}, data: {}",
&cmd.operation,
cmd.payload.join("")
);
if !"bs2".contains(cmd.bin) {
bail!("'bin' parameter must be 'b', 's', or '2'");
}
let origin = WasmCloudEntity::new_actor(WASH_ORIGIN_KEY)?;
let target = WasmCloudEntity::new_actor(&cmd.actor_id)?;
if cmd.data.is_some() && !cmd.payload.is_empty() {
bail!("you can use either -d/--data or the payload args, but not both.");
}
let payload = if let Some(fname) = cmd.data {
std::fs::read_to_string(fname)?
} else {
cmd.payload.join("")
};
debug!(
"calling actor with operation: {}, data: {}",
&cmd.operation, &payload
);
let bytes = json_str_to_msgpack_bytes(&payload)?;
let lattice_prefix = cmd
.opts
.lattice_prefix
.clone()
.unwrap_or_else(|| DEFAULT_LATTICE_PREFIX.to_string());
let (client, timeout_ms) = rpc_client_from_opts(cmd.opts, cmd.cluster_seed).await?;
Ok(client
.send_timeout(
origin,
target,
&lattice_prefix,
Message {
method: &cmd.operation,
arg: bytes.into(),
},
Duration::from_millis(timeout_ms),
)
.await?)
}
pub(crate) fn call_output(
response: Vec<u8>,
save_output: Option<PathBuf>,
bin: char,
is_test: bool,
) -> Result<CommandOutput> {
if let Some(ref save_path) = save_output {
std::fs::write(save_path, response)
.with_context(|| format!("Error saving results to {}", &save_path.display()))?;
return Ok(CommandOutput::new(
"",
HashMap::<String, serde_json::Value>::new(),
));
}
if is_test {
let test_results = wasmbus_rpc::common::deserialize::<TestResults>(&response)
.with_context(|| {
format!(
"Error interpreting response as TestResults. Response: {}",
String::from_utf8_lossy(&response)
)
})?;
wasmcloud_test_util::cli::print_test_results(&test_results);
return Ok(CommandOutput::new(
"",
HashMap::<String, serde_json::Value>::new(),
));
}
let mut json = HashMap::new();
json.insert(
"response".to_string(),
msgpack_to_json_val(response.clone(), bin),
);
Ok(CommandOutput::new(
format!(
"\nCall response (raw): {}",
String::from_utf8_lossy(&response)
),
json,
))
}
async fn rpc_client_from_opts(
opts: ConnectionOpts,
cmd_cluster_seed: Option<ClusterSeed>,
) -> Result<(RpcClient, u64)> {
let ctx = if let Some(context) = opts.context {
Some(load_context(context)?)
} else if let Ok(ctx_dir) = context_dir(None) {
let ctx_dir = ContextDir::new(ctx_dir)?;
ensure_host_config_context(&ctx_dir)?;
Some(ctx_dir.load_default_context()?)
} else {
None
};
let rpc_host = opts.rpc_host.unwrap_or_else(|| {
ctx.as_ref()
.map(|c| c.rpc_host.clone())
.unwrap_or_else(|| DEFAULT_NATS_HOST.to_string())
});
let rpc_port = opts.rpc_port.unwrap_or_else(|| {
ctx.as_ref()
.map(|c| c.rpc_port.to_string())
.unwrap_or_else(|| DEFAULT_NATS_PORT.to_string())
});
let rpc_jwt = if opts.rpc_jwt.is_some() {
opts.rpc_jwt
} else {
ctx.as_ref().map(|c| c.rpc_jwt.clone()).unwrap_or_default()
};
let rpc_seed = if opts.rpc_seed.is_some() {
opts.rpc_seed
} else {
ctx.as_ref().map(|c| c.rpc_seed.clone()).unwrap_or_default()
};
let rpc_credsfile = if opts.rpc_credsfile.is_some() {
opts.rpc_credsfile
} else {
ctx.as_ref()
.map(|c| c.rpc_credsfile.clone())
.unwrap_or_default()
};
let cluster_seed = cmd_cluster_seed.unwrap_or_else(|| {
ctx.as_ref()
.map(|c| {
c.cluster_seed.clone().unwrap_or_else(|| {
error!(
"No cluster seed provided and no context available, this RPC will fail."
);
ClusterSeed::default()
})
})
.unwrap_or_default()
});
let nc = nats_client_from_opts(&rpc_host, &rpc_port, rpc_jwt, rpc_seed, rpc_credsfile).await?;
Ok((
RpcClient::new(
nc,
WASH_HOST_ID.to_string(),
Some(Duration::from_millis(opts.timeout_ms)),
std::sync::Arc::new(nkeys::KeyPair::from_seed(&extract_arg_value(
cluster_seed.as_ref(),
)?)?),
),
opts.timeout_ms,
))
}
#[cfg(test)]
mod test {
use super::CallCommand;
use anyhow::Result;
use clap::Parser;
use std::{path::PathBuf, str::FromStr};
use wash_lib::id::ModuleId;
const RPC_HOST: &str = "127.0.0.1";
const RPC_PORT: &str = "4222";
const LATTICE_PREFIX: &str = "default";
const SAVE_FNAME: &str = "/dev/null";
const DATA_FNAME: &str = "/tmp/data.json";
const ACTOR_ID: &str = "MDPDJEYIAK6MACO67PRFGOSSLODBISK4SCEYDY3HEOY4P5CVJN6UCWUK";
#[derive(Debug, Parser)]
struct Cmd {
#[clap(flatten)]
command: CallCommand,
}
#[test]
fn test_rpc_comprehensive() -> Result<()> {
let call_all: Cmd = Parser::try_parse_from([
"call",
"--test",
"--data",
DATA_FNAME,
"--save",
SAVE_FNAME,
"--bin",
"2",
"--context",
"~/.wash/contexts/default.json",
"--cluster-seed",
"SCAMSVN4M2NZ65RWGYE42BZZ7VYEFEAAHGLIY7R4W7CRHORSMXTDJRKXLY",
"--lattice-prefix",
LATTICE_PREFIX,
"--rpc-host",
RPC_HOST,
"--rpc-port",
RPC_PORT,
"--rpc-timeout-ms",
"0",
ACTOR_ID,
"HandleOperation",
"{ \"hello\": \"world\"}",
])?;
match call_all.command {
CallCommand {
opts,
data,
save,
bin,
test,
actor_id,
operation,
payload,
cluster_seed,
} => {
assert_eq!(&opts.rpc_host.unwrap(), RPC_HOST);
assert_eq!(&opts.rpc_port.unwrap(), RPC_PORT);
assert_eq!(&opts.lattice_prefix.unwrap(), LATTICE_PREFIX);
assert_eq!(opts.timeout_ms, 0);
assert_eq!(
opts.context,
Some(PathBuf::from("~/.wash/contexts/default.json"))
);
assert_eq!(data, Some(PathBuf::from(DATA_FNAME)));
assert_eq!(save, Some(PathBuf::from(SAVE_FNAME)));
assert_eq!(
cluster_seed.unwrap(),
"SCAMSVN4M2NZ65RWGYE42BZZ7VYEFEAAHGLIY7R4W7CRHORSMXTDJRKXLY"
.parse()
.unwrap()
);
assert!(test);
assert_eq!(bin, '2');
assert_eq!(actor_id, ModuleId::from_str(ACTOR_ID).unwrap());
assert_eq!(operation, "HandleOperation");
assert_eq!(payload, vec!["{ \"hello\": \"world\"}".to_string()])
}
#[allow(unreachable_patterns)]
cmd => panic!("call constructed incorrect command: {:?}", cmd),
}
Ok(())
}
}