Breaking: Uses anyhow instead of failure

Closes #25

lib/Cargo.toml

@@ -20,7 +20,7 @@ md-5 = "0.8"
 sha-1 = "0.8"
 sha2 = "0.8"
 digest = "0.8"
-failure = "0.1"
+anyhow = "1"
 regex = "1"
 rio_api = "0.4"
 rio_turtle = "0.4"

lib/benches/sparql_query.rs

@@ -1,5 +1,5 @@
+use anyhow::anyhow;
 use criterion::{criterion_group, criterion_main, Criterion};
-use failure::format_err;
 use oxigraph::model::vocab::rdf;
 use oxigraph::model::*;
 use oxigraph::sparql::*;
@@ -55,7 +55,7 @@ fn to_relative_path(url: &str) -> Result<String> {
             "rdf-tests/sparql11/",
         ))
     } else {
-        Err(format_err!("Not supported url for file: {}", url))
+        Err(anyhow!("Not supported url for file: {}", url))
     }
 }
 
@@ -65,7 +65,7 @@ fn read_file(url: &str) -> Result<impl BufRead> {
     base_path.push(to_relative_path(url)?);
 
     Ok(BufReader::new(File::open(&base_path).map_err(|e| {
-        format_err!("Opening file {} failed with {}", base_path.display(), e)
+        anyhow!("Opening file {} failed with {}", base_path.display(), e)
     })?))
 }
 
@@ -98,7 +98,7 @@ fn load_graph_to_repository(
     } else if url.ends_with(".rdf") {
         GraphSyntax::RdfXml
     } else {
-        return Err(format_err!("Serialization type not found for {}", url));
+        return Err(anyhow!("Serialization type not found for {}", url));
     };
     connection.load_graph(read_file(url)?, syntax, to_graph_name, Some(url))
 }
@@ -214,21 +214,18 @@ impl Iterator for TestManifest {
                         let n = n.clone().into();
                         match self.graph.object_for_subject_predicate(&n, &qt::QUERY) {
                             Some(Term::NamedNode(q)) => q.as_str().to_owned(),
-                            Some(_) => return Some(Err(format_err!("invalid query"))),
-                            None => return Some(Err(format_err!("query not found"))),
+                            Some(_) => return Some(Err(anyhow!("invalid query"))),
+                            None => return Some(Err(anyhow!("query not found"))),
                         }
                     }
-                    Some(_) => return Some(Err(format_err!("invalid action"))),
+                    Some(_) => return Some(Err(anyhow!("invalid action"))),
                     None => {
-                        return Some(Err(format_err!(
-                            "action not found for test {}",
-                            test_subject
-                        )));
+                        return Some(Err(anyhow!("action not found for test {}", test_subject)));
                     }
                 };
                 Some(Ok(Test { kind, query }))
             }
-            Some(_) => Some(Err(format_err!("invalid test list"))),
+            Some(_) => Some(Err(anyhow!("invalid test list"))),
             None => {
                 match self.manifests_to_do.pop() {
                     Some(url) => {
@@ -253,7 +250,7 @@ impl Iterator for TestManifest {
                                         }),
                                 );
                             }
-                            Some(_) => return Some(Err(format_err!("invalid tests list"))),
+                            Some(_) => return Some(Err(anyhow!("invalid tests list"))),
                             None => (),
                         }
 
@@ -269,10 +266,7 @@ impl Iterator for TestManifest {
                                 ));
                             }
                             Some(term) => {
-                                return Some(Err(format_err!(
-                                    "Invalid tests list. Got term {}",
-                                    term
-                                )));
+                                return Some(Err(anyhow!("Invalid tests list. Got term {}", term)));
                             }
                             None => (),
                         }

lib/src/lib.rs

@@ -109,7 +109,7 @@ pub mod sparql;
 pub(crate) mod store;
 mod syntax;
 
-pub use failure::Error;
+pub use anyhow::Error;
 pub type Result<T> = ::std::result::Result<T, Error>;
 pub use crate::repository::Repository;
 pub use crate::repository::RepositoryConnection;

lib/src/sparql/eval.rs

@@ -8,8 +8,8 @@ use crate::sparql::ServiceHandler;
 use crate::store::numeric_encoder::*;
 use crate::store::StoreConnection;
 use crate::Result;
+use anyhow::anyhow;
 use digest::Digest;
-use failure::format_err;
 use md5::Md5;
 use rand::random;
 use regex::{Regex, RegexBuilder};
@@ -220,7 +220,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
                     if let Some(graph_name) = get_pattern_value(graph_name, &tuple) {
                         graph_name
                     } else {
-                        let result: EncodedTuplesIterator<'_> = Box::new(once(Err(format_err!(
+                        let result: EncodedTuplesIterator<'_> = Box::new(once(Err(anyhow!(
                             "Unknown graph name is not allowed when evaluating property path"
                         ))));
                         return result;
@@ -493,7 +493,7 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
     ) -> Result<EncodedTuplesIterator<'b>> {
         let service_name = self.dataset.decode_named_node(
             get_pattern_value(service_name, from)
-                .ok_or_else(|| format_err!("The SERVICE name is not bound"))?,
+                .ok_or_else(|| anyhow!("The SERVICE name is not bound"))?,
         )?;
         Ok(self.encode_bindings(
             variables,

lib/src/sparql/json_results.rs

@@ -3,7 +3,7 @@
 use crate::model::*;
 use crate::sparql::model::*;
 use crate::Result;
-use failure::format_err;
+use anyhow::anyhow;
 use std::io::Write;
 
 pub fn write_json_results<W: Write>(results: QueryResult<'_>, mut sink: W) -> Result<W> {
@@ -79,7 +79,7 @@ pub fn write_json_results<W: Write>(results: QueryResult<'_>, mut sink: W) -> Re
             sink.write_all(b"]}}")?;
         }
         QueryResult::Graph(_) => {
-            return Err(format_err!(
+            return Err(anyhow!(
                 "Graphs could not be formatted to SPARQL query results XML format"
             ));
         }

lib/src/sparql/mod.rs

@@ -18,7 +18,7 @@ use crate::sparql::plan::{DatasetView, PlanNode};
 use crate::sparql::plan_builder::PlanBuilder;
 use crate::store::StoreConnection;
 use crate::Result;
-use failure::format_err;
+use anyhow::anyhow;
 use rio_api::iri::Iri;
 use std::fmt;
 
@@ -180,7 +180,7 @@ struct EmptyServiceHandler;
 
 impl ServiceHandler for EmptyServiceHandler {
     fn handle<'a>(&'a self, _: &NamedNode, _: &'a GraphPattern) -> Result<BindingsIterator<'a>> {
-        Err(format_err!("The SERVICE feature is not implemented"))
+        Err(anyhow!("The SERVICE feature is not implemented"))
     }
 }
 

lib/src/sparql/model.rs

@@ -2,7 +2,7 @@ use crate::model::*;
 use crate::sparql::json_results::write_json_results;
 use crate::sparql::xml_results::{read_xml_results, write_xml_results};
 use crate::{FileSyntax, GraphSyntax, Result};
-use failure::format_err;
+use anyhow::anyhow;
 use rand::random;
 use rio_api::formatter::TriplesFormatter;
 use rio_turtle::{NTriplesFormatter, TurtleFormatter};
@@ -61,7 +61,7 @@ impl<'a> QueryResult<'a> {
                 }
             })
         } else {
-            Err(format_err!(
+            Err(anyhow!(
                 "Bindings or booleans could not be formatted as an RDF graph"
             ))
         }
@@ -168,7 +168,7 @@ impl Variable {
     pub fn name(&self) -> Result<&str> {
         match self {
             Variable::Variable { name } => Ok(name),
-            _ => Err(format_err!("The variable {} has no name", self)),
+            _ => Err(anyhow!("The variable {} has no name", self)),
         }
     }
 }

lib/src/sparql/plan_builder.rs

@@ -6,7 +6,7 @@ use crate::sparql::plan::PlanPropertyPath;
 use crate::sparql::plan::*;
 use crate::store::numeric_encoder::{Encoder, ENCODED_DEFAULT_GRAPH};
 use crate::Result;
-use failure::format_err;
+use anyhow::anyhow;
 use std::collections::HashSet;
 
 pub struct PlanBuilder<E: Encoder> {
@@ -654,7 +654,7 @@ impl<E: Encoder> PlanBuilder<E> {
                             "string",
                         )?
                     } else {
-                        return Err(format_err!("Not supported custom function {}", expression));
+                        return Err(anyhow!("Not supported custom function {}", expression));
                     }
                 }
             },
@@ -680,10 +680,7 @@ impl<E: Encoder> PlanBuilder<E> {
                 graph_name,
             )?)))
         } else {
-            Err(format_err!(
-                "The xsd:{} casting takes only one parameter",
-                name
-            ))
+            Err(anyhow!("The xsd:{} casting takes only one parameter", name))
         }
     }
 

lib/src/sparql/xml_results.rs

@@ -3,7 +3,7 @@
 use crate::model::*;
 use crate::sparql::model::*;
 use crate::Result;
-use failure::format_err;
+use anyhow::anyhow;
 use quick_xml::events::BytesDecl;
 use quick_xml::events::BytesEnd;
 use quick_xml::events::BytesStart;
@@ -99,7 +99,7 @@ pub fn write_xml_results<W: Write>(results: QueryResult<'_>, sink: W) -> Result<
             writer.write_event(Event::End(BytesEnd::borrowed(b"sparql")))?;
         }
         QueryResult::Graph(_) => {
-            return Err(format_err!(
+            return Err(anyhow!(
                 "Graphs could not be formatted to SPARQL query results XML format"
             ));
         }
@@ -130,7 +130,7 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
             let (ns, event) = reader.read_namespaced_event(&mut buffer, &mut namespace_buffer)?;
             if let Some(ns) = ns {
                 if ns != b"http://www.w3.org/2005/sparql-results#".as_ref() {
-                    return Err(format_err!(
+                    return Err(anyhow!(
                         "Unexpected namespace found in RDF/XML query result: {}",
                         reader.decode(ns)?
                     ));
@@ -144,14 +144,14 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                     if event.name() == b"sparql" {
                         state = State::Sparql;
                     } else {
-                        return Err(format_err!("Expecting <sparql> tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting <sparql> tag, found {}", reader.decode(event.name())?));
                     }
                 }
                 State::Sparql => {
                     if event.name() == b"head" {
                         state = State::Head;
                     } else {
-                        return Err(format_err!("Expecting <head> tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting <head> tag, found {}", reader.decode(event.name())?));
                     }
                 }
                 State::Head => {
@@ -159,12 +159,12 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                         let name = event.attributes()
                             .filter_map(|attr| attr.ok())
                             .find(|attr| attr.key == b"name")
-                            .ok_or_else(|| format_err!("No name attribute found for the <variable> tag"))?;
+                            .ok_or_else(|| anyhow!("No name attribute found for the <variable> tag"))?;
                         variables.push(name.unescape_and_decode_value(&reader)?);
                     } else if event.name() == b"link" {
                         // no op
                     } else {
-                        return Err(format_err!("Expecting <variable> or <link> tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting <variable> or <link> tag, found {}", reader.decode(event.name())?));
                     }
                 }
                 State::AfterHead => {
@@ -186,17 +186,17 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                             }),
                         )));
                     } else if event.name() != b"link" && event.name() != b"results" && event.name() != b"boolean" {
-                        return Err(format_err!("Expecting sparql tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting sparql tag, found {}", reader.decode(event.name())?));
                     }
                 }
-                State::Boolean => return Err(format_err!("Unexpected tag inside of <boolean> tag: {}", reader.decode(event.name())?))
+                State::Boolean => return Err(anyhow!("Unexpected tag inside of <boolean> tag: {}", reader.decode(event.name())?))
             },
             Event::Empty(event) => match state {
                 State::Sparql => {
                     if event.name() == b"head" {
                         state = State::AfterHead;
                     } else {
-                        return Err(format_err!("Expecting <head> tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting <head> tag, found {}", reader.decode(event.name())?));
                     }
                 }
                 State::Head => {
@@ -204,12 +204,12 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                         let name = event.attributes()
                             .filter_map(|v| v.ok())
                             .find(|attr| attr.key == b"name")
-                            .ok_or_else(|| format_err!("No name attribute found for the <variable> tag"))?;
+                            .ok_or_else(|| anyhow!("No name attribute found for the <variable> tag"))?;
                         variables.push(name.unescape_and_decode_value(&reader)?);
                     } else if event.name() == b"link" {
                         // no op
                     } else {
-                        return Err(format_err!("Expecting <variable> or <link> tag, found {}", reader.decode(event.name())?));
+                        return Err(anyhow!("Expecting <variable> or <link> tag, found {}", reader.decode(event.name())?));
                     }
                 },
                 State::AfterHead => {
@@ -219,10 +219,10 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                             Box::new(empty()),
                         )))
                     } else {
-                        return Err(format_err!("Unexpected autoclosing tag <{}>", reader.decode(event.name())?))
+                        return Err(anyhow!("Unexpected autoclosing tag <{}>", reader.decode(event.name())?))
                     }
                 }
-                _ => return Err(format_err!("Unexpected autoclosing tag <{}>", reader.decode(event.name())?))
+                _ => return Err(anyhow!("Unexpected autoclosing tag <{}>", reader.decode(event.name())?))
             },
             Event::Text(event) => {
                 let value = event.unescaped()?;
@@ -233,18 +233,18 @@ pub fn read_xml_results<'a>(source: impl BufRead + 'a) -> Result<QueryResult<'a>
                         } else if value.as_ref() == b"false" {
                             Ok(QueryResult::Boolean(false))
                         } else {
-                            Err(format_err!("Unexpected boolean value. Found {}", reader.decode(&value)?))
+                            Err(anyhow!("Unexpected boolean value. Found {}", reader.decode(&value)?))
                         };
                     }
-                    _ => Err(format_err!("Unexpected textual value found: {}", reader.decode(&value)?))
+                    _ => Err(anyhow!("Unexpected textual value found: {}", reader.decode(&value)?))
                 };
             },
             Event::End(_) => if let State::Head = state {
                 state = State::AfterHead;
             } else {
-                return Err(format_err!("Unexpected early file end. All results file should have a <head> and a <result> or <boolean> tag"));
+                return Err(anyhow!("Unexpected early file end. All results file should have a <head> and a <result> or <boolean> tag"));
             },
-            Event::Eof => return Err(format_err!("Unexpected early file end. All results file should have a <head> and a <result> or <boolean> tag")),
+            Event::Eof => return Err(anyhow!("Unexpected early file end. All results file should have a <head> and a <result> or <boolean> tag")),
             _ => (),
         }
     }
@@ -292,7 +292,7 @@ impl<R: BufRead> ResultsIterator<R> {
                 .read_namespaced_event(&mut self.buffer, &mut self.namespace_buffer)?;
             if let Some(ns) = ns {
                 if ns != b"http://www.w3.org/2005/sparql-results#".as_ref() {
-                    return Err(format_err!(
+                    return Err(anyhow!(
                         "Unexpected namespace found in RDF/XML query result: {}",
                         self.reader.decode(ns)?
                     ));
@@ -304,7 +304,7 @@ impl<R: BufRead> ResultsIterator<R> {
                         if event.name() == b"result" {
                             state = State::Result;
                         } else {
-                            return Err(format_err!(
+                            return Err(anyhow!(
                                 "Expecting <result>, found {}",
                                 self.reader.decode(event.name())?
                             ));
@@ -319,14 +319,14 @@ impl<R: BufRead> ResultsIterator<R> {
                             {
                                 Some(attr) => current_var = Some(attr.unescaped_value()?.to_vec()),
                                 None => {
-                                    return Err(format_err!(
+                                    return Err(anyhow!(
                                         "No name attribute found for the <binding> tag"
                                     ));
                                 }
                             }
                             state = State::Binding;
                         } else {
-                            return Err(format_err!(
+                            return Err(anyhow!(
                                 "Expecting <binding>, found {}",
                                 self.reader.decode(event.name())?
                             ));
@@ -334,7 +334,7 @@ impl<R: BufRead> ResultsIterator<R> {
                     }
                     State::Binding => {
                         if term.is_some() {
-                            return Err(format_err!(
+                            return Err(anyhow!(
                                 "There is already a value for the current binding"
                             ));
                         }
@@ -356,7 +356,7 @@ impl<R: BufRead> ResultsIterator<R> {
                             }
                             state = State::Literal;
                         } else {
-                            return Err(format_err!(
+                            return Err(anyhow!(
                                 "Expecting <uri>, <bnode> or <literal> found {}",
                                 self.reader.decode(event.name())?
                             ));
@@ -390,7 +390,7 @@ impl<R: BufRead> ResultsIterator<R> {
                             );
                         }
                         _ => {
-                            return Err(format_err!(
+                            return Err(anyhow!(
                                 "Unexpected textual value found: {}",
                                 self.reader.decode(&data)?
                             ));
@@ -404,7 +404,7 @@ impl<R: BufRead> ResultsIterator<R> {
                         if let Some(var) = &current_var {
                             new_bindings[self.mapping[var]] = term.clone()
                         } else {
-                            return Err(format_err!("No name found for <binding> tag"));
+                            return Err(anyhow!("No name found for <binding> tag"));
                         }
                         term = None;
                         state = State::Result;

lib/src/store/memory.rs

@@ -1,8 +1,9 @@
 use crate::store::numeric_encoder::*;
 use crate::store::*;
 use crate::{Repository, Result};
-use failure::{Backtrace, Fail};
 use std::collections::{HashMap, HashSet};
+use std::error::Error;
+use std::fmt;
 use std::hash::Hash;
 use std::iter::{empty, once};
 use std::sync::{PoisonError, RwLock, RwLockReadGuard, RwLockWriteGuard};
@@ -681,16 +682,19 @@ impl StoreTransaction for MemoryTransaction<'_> {
     }
 }
 
-#[derive(Debug, Fail)]
-#[fail(display = "Mutex Mutex was poisoned")]
-pub struct MutexPoisonError {
-    backtrace: Backtrace,
+#[derive(Debug)]
+struct MutexPoisonError {}
+
+impl fmt::Display for MutexPoisonError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "Mutex was poisoned")
+    }
 }
 
+impl Error for MutexPoisonError {}
+
 impl<T> From<PoisonError<T>> for MutexPoisonError {
     fn from(_: PoisonError<T>) -> Self {
-        Self {
-            backtrace: Backtrace::new(),
-        }
+        Self {}
     }
 }

lib/src/store/numeric_encoder.rs

@@ -3,7 +3,7 @@ use crate::model::vocab::xsd;
 use crate::model::xsd::*;
 use crate::model::*;
 use crate::Result;
-use failure::format_err;
+use anyhow::anyhow;
 use md5::digest::Digest;
 use md5::Md5;
 use rand::random;
@@ -604,7 +604,7 @@ impl<R: Read> TermReader for R {
                     buffer,
                 )))
             }
-            _ => Err(format_err!("the term buffer has an invalid type id")),
+            _ => Err(anyhow!("the term buffer has an invalid type id")),
         }
     }
 
@@ -1106,21 +1106,17 @@ pub trait Decoder {
         match self.decode_term(encoded)? {
             Term::NamedNode(named_node) => Ok(named_node.into()),
             Term::BlankNode(blank_node) => Ok(blank_node.into()),
-            Term::Literal(_) => Err(format_err!(
-                "A literal has ben found instead of a named node"
-            )),
+            Term::Literal(_) => Err(anyhow!("A literal has ben found instead of a named node")),
         }
     }
 
     fn decode_named_node(&self, encoded: EncodedTerm) -> Result<NamedNode> {
         match self.decode_term(encoded)? {
             Term::NamedNode(named_node) => Ok(named_node),
-            Term::BlankNode(_) => Err(format_err!(
+            Term::BlankNode(_) => Err(anyhow!(
                 "A blank node has been found instead of a named node"
             )),
-            Term::Literal(_) => Err(format_err!(
-                "A literal has ben found instead of a named node"
-            )),
+            Term::Literal(_) => Err(anyhow!("A literal has ben found instead of a named node")),
         }
     }
 
@@ -1148,9 +1144,7 @@ pub trait Decoder {
 impl<S: StrLookup> Decoder for S {
     fn decode_term(&self, encoded: EncodedTerm) -> Result<Term> {
         match encoded {
-            EncodedTerm::DefaultGraph => {
-                Err(format_err!("The default graph tag is not a valid term"))
-            }
+            EncodedTerm::DefaultGraph => Err(anyhow!("The default graph tag is not a valid term")),
             EncodedTerm::NamedNode { iri_id } => {
                 Ok(NamedNode::new_unchecked(get_required_str(self, iri_id)?).into())
             }
@@ -1189,7 +1183,7 @@ impl<S: StrLookup> Decoder for S {
 
 fn get_required_str(lookup: &impl StrLookup, id: u128) -> Result<String> {
     lookup.get_str(id)?.ok_or_else(|| {
-        format_err!(
+        anyhow!(
             "Not able to find the string with id {} in the string store",
             id
         )

lib/src/store/rocksdb.rs

@@ -1,7 +1,7 @@
 use crate::store::numeric_encoder::*;
 use crate::store::{Store, StoreConnection, StoreRepositoryConnection, StoreTransaction};
 use crate::{Repository, Result};
-use failure::format_err;
+use anyhow::anyhow;
 use rocksdb::*;
 use std::io::Cursor;
 use std::iter::{empty, once};
@@ -596,7 +596,7 @@ impl RocksDbStoreInnerTransaction<'_> {
 
 fn get_cf<'a>(db: &'a DB, name: &str) -> Result<&'a ColumnFamily> {
     db.cf_handle(name)
-        .ok_or_else(|| format_err!("column family {} not found", name))
+        .ok_or_else(|| anyhow!("column family {} not found", name))
 }
 
 fn wrap_error<'a, E: 'a, I: Iterator<Item = Result<E>> + 'a>(

lib/tests/service_test_cases.rs

@@ -1,4 +1,4 @@
-use failure::format_err;
+use anyhow::anyhow;
 use oxigraph::model::*;
 use oxigraph::sparql::{
     BindingsIterator, GraphPattern, PreparedQuery, QueryOptions, QueryResult, ServiceHandler,
@@ -73,7 +73,7 @@ fn two_service_test() {
                 .as_ref();
                 do_pattern(triples, graph_pattern, QueryOptions::default())
             } else {
-                Err(format_err!("not found"))
+                Err(anyhow!("not found"))
             }
         }
     }
@@ -124,7 +124,7 @@ fn silent_service_empty_set_test() {
             _: &NamedNode,
             _: &'a GraphPattern,
         ) -> Result<BindingsIterator<'a>> {
-            Err(format_err!("This is supposed to fail"))
+            Err(anyhow!("This is supposed to fail"))
         }
     }
 
@@ -162,7 +162,7 @@ fn non_silent_service_test() {
             _: &NamedNode,
             _: &'a GraphPattern,
         ) -> Result<BindingsIterator<'a>> {
-            Err(format_err!("This is supposed to fail"))
+            Err(anyhow!("This is supposed to fail"))
         }
     }
 
@@ -232,9 +232,7 @@ fn query_repository<'a>(
                 Box::new(collected.into_iter()),
             ))
         }
-        _ => Err(format_err!(
-            "Excpected bindings but got another QueryResult"
-        )),
+        _ => Err(anyhow!("Excpected bindings but got another QueryResult")),
     }
 }
 
@@ -256,7 +254,7 @@ fn pattern_repository<'a>(
                 Box::new(collected.into_iter()),
             ))
         }
-        _ => Err(format_err!("Expected bindings but got another QueryResult")),
+        _ => Err(anyhow!("Expected bindings but got another QueryResult")),
     }
 }
 

lib/tests/sparql_test_cases.rs

@@ -1,5 +1,5 @@
 ///! Integration tests based on [SPARQL 1.1 Test Cases](https://www.w3.org/2009/sparql/docs/tests/README.html)
-use failure::format_err;
+use anyhow::anyhow;
 use oxigraph::model::vocab::rdf;
 use oxigraph::model::vocab::rdfs;
 use oxigraph::model::*;
@@ -162,27 +162,27 @@ fn sparql_w3c_query_evaluation_testsuite() -> Result<()> {
                 .connection()?
                 .prepare_query(&read_file_to_string(&test.query)?, QueryOptions::default().with_base_iri(&test.query).with_service_handler(StaticServiceHandler::new(&test.service_data)?))
                 {
-                    Err(error) => Err(format_err!(
+                    Err(error) => Err(anyhow!(
                     "Failure to parse query of {} with error: {}",
                     test, error
                 )),
                     Ok(query) => match query.exec() {
-                        Err(error) => Err(format_err!(
+                        Err(error) => Err(anyhow!(
                         "Failure to execute query of {} with error: {}",
                         test, error
                     )),
                         Ok(result) => {
                             let expected_graph =
-                                load_sparql_query_result_graph(test.result.as_ref().unwrap()).map_err(|e| format_err!("Error constructing expected graph for {}: {}", test, e))?;
+                                load_sparql_query_result_graph(test.result.as_ref().unwrap()).map_err(|e| anyhow!("Error constructing expected graph for {}: {}", test, e))?;
                             let with_order = expected_graph
                                 .triples_for_predicate(&rs::INDEX)
                                 .next()
                                 .is_some();
-                            let actual_graph = to_graph(result, with_order).map_err(|e| format_err!("Error constructing result graph for {}: {}", test, e))?;
+                            let actual_graph = to_graph(result, with_order).map_err(|e| anyhow!("Error constructing result graph for {}: {}", test, e))?;
                             if actual_graph.is_isomorphic(&expected_graph) {
                                 Ok(())
                             } else {
-                                Err(format_err!("Failure on {}.\nExpected file:\n{}\nOutput file:\n{}\nParsed query:\n{}\nData:\n{}\n",
+                                Err(anyhow!("Failure on {}.\nExpected file:\n{}\nOutput file:\n{}\nParsed query:\n{}\nData:\n{}\n",
                                 test,
                                 expected_graph,
                                 actual_graph,
@@ -240,7 +240,7 @@ fn load_graph_to_repository(
     } else if url.ends_with(".rdf") {
         GraphSyntax::RdfXml
     } else {
-        return Err(format_err!("Serialization type not found for {}", url));
+        return Err(anyhow!("Serialization type not found for {}", url));
     };
     connection.load_graph(read_file(url)?, syntax, to_graph_name, Some(url))
 }
@@ -276,7 +276,7 @@ fn to_relative_path(url: &str) -> Result<String> {
             "rdf-tests/sparql11/",
         ))
     } else {
-        Err(format_err!("Not supported url for file: {}", url))
+        Err(anyhow!("Not supported url for file: {}", url))
     }
 }
 
@@ -286,7 +286,7 @@ fn read_file(url: &str) -> Result<impl BufRead> {
     base_path.push(to_relative_path(url)?);
 
     Ok(BufReader::new(File::open(&base_path).map_err(|e| {
-        format_err!("Opening file {} failed with {}", base_path.display(), e)
+        anyhow!("Opening file {} failed with {}", base_path.display(), e)
     })?))
 }
 
@@ -528,8 +528,8 @@ impl Iterator for TestManifest {
                         let n = n.clone().into();
                         let query = match self.graph.object_for_subject_predicate(&n, &qt::QUERY) {
                             Some(Term::NamedNode(q)) => q.as_str().to_owned(),
-                            Some(_) => return Some(Err(format_err!("invalid query"))),
-                            None => return Some(Err(format_err!("query not found"))),
+                            Some(_) => return Some(Err(anyhow!("invalid query"))),
+                            None => return Some(Err(anyhow!("query not found"))),
                         };
                         let data = match self.graph.object_for_subject_predicate(&n, &qt::DATA) {
                             Some(Term::NamedNode(q)) => Some(q.as_str().to_owned()),
@@ -567,12 +567,9 @@ impl Iterator for TestManifest {
                             .collect();
                         (query, data, graph_data, service_data)
                     }
-                    Some(_) => return Some(Err(format_err!("invalid action"))),
+                    Some(_) => return Some(Err(anyhow!("invalid action"))),
                     None => {
-                        return Some(Err(format_err!(
-                            "action not found for test {}",
-                            test_subject
-                        )));
+                        return Some(Err(anyhow!("action not found for test {}", test_subject)));
                     }
                 };
                 let result = match self
@@ -580,7 +577,7 @@ impl Iterator for TestManifest {
                     .object_for_subject_predicate(&test_subject, &*mf::RESULT)
                 {
                     Some(Term::NamedNode(n)) => Some(n.as_str().to_owned()),
-                    Some(_) => return Some(Err(format_err!("invalid result"))),
+                    Some(_) => return Some(Err(anyhow!("invalid result"))),
                     None => None,
                 };
                 Some(Ok(Test {
@@ -595,7 +592,7 @@ impl Iterator for TestManifest {
                     result,
                 }))
             }
-            Some(_) => Some(Err(format_err!("invalid test list"))),
+            Some(_) => Some(Err(anyhow!("invalid test list"))),
             None => {
                 match self.manifests_to_do.pop() {
                     Some(url) => {
@@ -620,7 +617,7 @@ impl Iterator for TestManifest {
                                         }),
                                 );
                             }
-                            Some(_) => return Some(Err(format_err!("invalid tests list"))),
+                            Some(_) => return Some(Err(anyhow!("invalid tests list"))),
                             None => (),
                         }
 
@@ -636,10 +633,7 @@ impl Iterator for TestManifest {
                                 ));
                             }
                             Some(term) => {
-                                return Some(Err(format_err!(
-                                    "Invalid tests list. Got term {}",
-                                    term
-                                )));
+                                return Some(Err(anyhow!("Invalid tests list. Got term {}", term)));
                             }
                             None => (),
                         }
@@ -723,7 +717,7 @@ impl ServiceHandler for StaticServiceHandler {
         if let QueryResult::Bindings(iterator) = self
             .services
             .get(service_name)
-            .ok_or_else(|| format_err!("Service {} not found", service_name))?
+            .ok_or_else(|| anyhow!("Service {} not found", service_name))?
             .connection()?
             .prepare_query_from_pattern(
                 &graph_pattern,
@@ -739,7 +733,7 @@ impl ServiceHandler for StaticServiceHandler {
                 Box::new(collected.into_iter()),
             ))
         } else {
-            Err(format_err!("Expected bindings but got another QueryResult"))
+            Err(anyhow!("Expected bindings but got another QueryResult"))
         }
     }
 }